Purnendu K Dasgupta

Summary

Affiliation: University of Texas at Arlington
Country: USA

Publications

  1. ncbi request reprint Iodine nutrition: iodine content of iodized salt in the United States
    Purnendu K Dasgupta
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019 0065, USA
    Environ Sci Technol 42:1315-23. 2008
  2. ncbi request reprint Perchlorate in the United States. Analysis of relative source contributions to the food chain
    Purnendu K Dasgupta
    Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409 1061, USA
    Environ Sci Technol 40:6608-14. 2006
  3. ncbi request reprint Intake of iodine and perchlorate and excretion in human milk
    Purnendu K Dasgupta
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019 0065, USA
    Environ Sci Technol 42:8115-21. 2008
  4. doi request reprint Chromatographic peak resolution using Microsoft Excel Solver. The merit of time shifting input arrays
    Purnendu K Dasgupta
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, 700 Planetarium Place, Arlington, TX 76019 0065, USA
    J Chromatogr A 1213:50-5. 2008
  5. ncbi request reprint Black box linearization for greater linear dynamic range: the effect of power transforms on the representation of data
    Purnendu K Dasgupta
    Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019 0065, United States
    Anal Chem 82:10143-50. 2010
  6. pmc A disposable blood cyanide sensor
    Yong Tian
    Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, TX 76019 0065, USA
    Anal Chim Acta 768:129-35. 2013
  7. doi request reprint Green analyzer for the measurement of total arsenic in drinking water: electrochemical reduction of arsenate to arsine and gas phase chemiluminescence with ozone
    Mrinal K Sengupta
    Department of Chemistry and Biochemistry, University of Texas at Arlington, Planetarium Place, Arlington, Texas 76019 0065, USA
    Anal Chem 82:3467-73. 2010
  8. pmc Rapid point of care analyzer for the measurement of cyanide in blood
    Jian Ma
    Department of Chemistry and Biochemistry, University of Texas, 700 Planetarium Place, Arlington, Texas 76019 0065, USA
    Anal Chem 83:4319-24. 2011
  9. pmc Cobinamide chemistries for photometric cyanide determination. A merging zone liquid core waveguide cyanide analyzer using cyanoaquacobinamide
    Jian Ma
    Department of Chemistry and Biochemistry, University of Texas, 700 Planetarium Place, Arlington, TX 76019 0065, USA
    Anal Chim Acta 736:78-84. 2012
  10. pmc Recent developments in cyanide detection: a review
    Jian Ma
    Department of Chemistry and Biochemistry, University of Texas, 700 Planetarium Place, Arlington, TX 76019 0065, United States
    Anal Chim Acta 673:117-25. 2010

Collaborators

Detail Information

Publications58

  1. ncbi request reprint Iodine nutrition: iodine content of iodized salt in the United States
    Purnendu K Dasgupta
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019 0065, USA
    Environ Sci Technol 42:1315-23. 2008
    ..There is much recent literature on iodine sufficiency and uptake inhibitors; there is also much misinformation and disinformation. We review the relevant literature and discuss our results with reference to the United States...
  2. ncbi request reprint Perchlorate in the United States. Analysis of relative source contributions to the food chain
    Purnendu K Dasgupta
    Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409 1061, USA
    Environ Sci Technol 40:6608-14. 2006
    ..Fireworks presently constitute a potentially important source of increasing importance but a quantitative impact cannotyet be assessed...
  3. ncbi request reprint Intake of iodine and perchlorate and excretion in human milk
    Purnendu K Dasgupta
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019 0065, USA
    Environ Sci Technol 42:8115-21. 2008
    ....
  4. doi request reprint Chromatographic peak resolution using Microsoft Excel Solver. The merit of time shifting input arrays
    Purnendu K Dasgupta
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, 700 Planetarium Place, Arlington, TX 76019 0065, USA
    J Chromatogr A 1213:50-5. 2008
    ..I show here that such deconvolution can be considerably improved if one or more of the response arrays are iteratively shifted in time...
  5. ncbi request reprint Black box linearization for greater linear dynamic range: the effect of power transforms on the representation of data
    Purnendu K Dasgupta
    Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019 0065, United States
    Anal Chem 82:10143-50. 2010
    ..Power responses are intrinsic to some detection schemes, and in others they are imbedded in instrument firmware to increase apparent linear range that the casual user may not be aware of. The consequences are demonstrated and discussed...
  6. pmc A disposable blood cyanide sensor
    Yong Tian
    Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, TX 76019 0065, USA
    Anal Chim Acta 768:129-35. 2013
    ..5 to 200 μM. The method was validated against a microdiffusion approach and applied to the measurement of cyanide in rabbit and human blood. The disposable device permits field measurement of blood cyanide in <4 min...
  7. doi request reprint Green analyzer for the measurement of total arsenic in drinking water: electrochemical reduction of arsenate to arsine and gas phase chemiluminescence with ozone
    Mrinal K Sengupta
    Department of Chemistry and Biochemistry, University of Texas at Arlington, Planetarium Place, Arlington, Texas 76019 0065, USA
    Anal Chem 82:3467-73. 2010
    ..Comparison of total As results in native and spiked water samples with those from inductively coupled plasma mass spectrometry (ICPMS) and other techniques show high correlation (r(2) = 0.9999) and near unity slopes...
  8. pmc Rapid point of care analyzer for the measurement of cyanide in blood
    Jian Ma
    Department of Chemistry and Biochemistry, University of Texas, 700 Planetarium Place, Arlington, Texas 76019 0065, USA
    Anal Chem 83:4319-24. 2011
    ..The results showed good correlation (slope 1.05, r(2) 0.9257); independent calibration standards were used...
  9. pmc Cobinamide chemistries for photometric cyanide determination. A merging zone liquid core waveguide cyanide analyzer using cyanoaquacobinamide
    Jian Ma
    Department of Chemistry and Biochemistry, University of Texas, 700 Planetarium Place, Arlington, TX 76019 0065, USA
    Anal Chim Acta 736:78-84. 2012
    ..The setup is readily used to measure thiocyanate with different reagents. We demonstrate applicability to real samples by analyzing human saliva samples and hydrolyzed extracts of apple seeds, peach pits, and almonds...
  10. pmc Recent developments in cyanide detection: a review
    Jian Ma
    Department of Chemistry and Biochemistry, University of Texas, 700 Planetarium Place, Arlington, TX 76019 0065, United States
    Anal Chim Acta 673:117-25. 2010
    ....
  11. doi request reprint A simple inexpensive gas phase chemiluminescence analyzer for measuring trace levels of arsenic in drinking water
    Mrinal K Sengupta
    Department of Chemistry and Biochemistry, University of Texas at Arlington, 700 Planetarium Place, Arlington, TX 76019 0065, USA
    Environ Pollut 158:252-7. 2010
    ..A single instrument weighs less than 3 kg, consumes <25 W in power, can be incorporated in a briefcase and constructed for <$US $1000. It is easily usable in the field...
  12. doi request reprint Breastfed infants metabolize perchlorate
    C Phillip Shelor
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019 0065, USA
    Environ Sci Technol 46:5151-9. 2012
    ..20 and 1.58; the difference was not significant (p = 0.68). However, the small number of subjects in the latter group makes it more difficult to conclude definitively whether perchlorate reduction does or does not occur...
  13. ncbi request reprint Creatinine adjustment of spot urine samples and 24 h excretion of iodine, selenium, perchlorate, and thiocyanate
    Shin ichi Ohira
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019 0065, USA
    Environ Sci Technol 42:9419-23. 2008
    ..5 to +101% from the actual measured value, the minimum absolute error being 2.5%. Creatinine adjustment for estimation of 24 h excretion from spot samples was not effective for iodine, selenium, perchlorate, or thiocyanate...
  14. ncbi request reprint Perchlorate and iodide in dairy and breast milk
    Andrea B Kirk
    The Institute of Environmental and Human Health, Texas Tech University, Lubbock, Texas 79409 1163, USA
    Environ Sci Technol 39:2011-7. 2005
    ..On the basis of limited available data, iodide levels in breast milk may be significantly lower than it was two decades ago. Recommended iodine intake by pregnant and lactating women may need to be revised upward...
  15. ncbi request reprint Perchlorate in dairy milk. Comparison of Japan versus the United States
    Jason V Dyke
    Departments of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409 1061, USA
    Environ Sci Technol 41:88-92. 2007
    ..4 +/-2.7 microg/L, n = 54), which are higher on average than those found in U.S. dairy milk samples reported by a 2004 Food and Drug Administration (FDA) study (5.9+/-1.8 microg/L, n= 104)...
  16. doi request reprint Review of analytical methods for the quantification of iodine in complex matrices
    C Phillip Shelor
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019 0065, USA
    Anal Chim Acta 702:16-36. 2011
    ..However, a general review of iodine determination on a wide-ranging set of complex matrices is not available. While this review is not comprehensive, we cover the principal developments since the original development of the S-K method...
  17. pmc Temporal patterns in perchlorate, thiocyanate, and iodide excretion in human milk
    Andrea B Kirk
    Department of Chemistry, University of Texas at Arlington, Arlington, TX 76009 0065, USA
    Environ Health Perspect 115:182-6. 2007
    ..Perchlorate is a common contaminant of water, food, and human milk. Although it is known that iodide undergoes significant diurnal variations in serum and urinary excretion, less is known about diurnal variations of milk iodide levels...
  18. ncbi request reprint Can breath isoprene be measured by ozone chemiluminescence?
    Shin ichi Ohira
    Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409 1061, USA
    Anal Chem 79:2641-9. 2007
    ..Even though present at lower concentrations than isoprene, unless removed prior to CL measurement, for some individuals sulfur gases can cause unacceptably large (up to 500%) errors, making the sulfur gas removal step critical...
  19. doi request reprint Measurement of nitrophenols in rain and air by two-dimensional liquid chromatography-chemically active liquid core waveguide spectrometry
    Lucksagoon Ganranoo
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019 0065, USA
    Anal Chem 82:5838-43. 2010
    ..Illustrative air and rain data are presented...
  20. doi request reprint Measurement of soil/dust arsenic by gas phase chemiluminescence
    Maather F Sawalha
    Department of Chemistry and Biochemistry, University of Texas at Arlington, 700 Planetarium Place, Arlington, TX 76019 0065, USA
    Talanta 77:372-9. 2008
    ..6, 1.3, 6.7, and 6.4 microg/L for As(III), As(V), dimethylarsinic acid (DMA) and monomethylarsonic acid (MMA), respectively...
  21. ncbi request reprint Airborne bacterial spore counts by terbium-enhanced luminescence detection: pitfalls and real values
    Qingyang Li
    Department of Chemistry and Biochemistry and Nano Tech Center, Texas Tech University, Lubbock, Texas 79409 1061, USA
    Environ Sci Technol 42:2799-804. 2008
    ..We show that aromatic acids are very likely large interferents. This interference typically constitutes approximately 70% of the signal and can be as high as 95%. It can be completely removed by prewashing the particles...
  22. ncbi request reprint The origin of naturally occurring perchlorate: the role of atmospheric processes
    Purnendu K Dasgupta
    Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409 1061, USA
    Environ Sci Technol 39:1569-75. 2005
    ..We report that perchlorate is present in many rain and snow samples. This strongly suggests that some perchlorate is formed in the atmosphere and a natural perchlorate background of atmospheric origin should exist...
  23. doi request reprint Rapid nondestructive spectrometric measurement of temperature-dependent gas-liquid solubility equilibria
    Jian Ma
    Department of Chemistry and Biochemistry, University of Texas, Arlington, Texas 76019 0065, USA
    Anal Chem 83:1157-61. 2011
    ..Very little sample is required for the measurement; the K(H) for 4-hydroxynonenal, a marker for oxidative stress, is measured to be 56.9 ± 2.6 M/atm (n = 3) at 37.4 °C with 1 mg of the material available...
  24. doi request reprint Electrodialytic membrane suppressors for ion chromatography make programmable buffer generators
    Yongjing Chen
    Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019 0065, USA
    Anal Chem 84:67-75. 2012
    ..We believe that this approach will be of value for the generation of eluents in the separation of proteins and other biomolecules and in online process titrations...
  25. doi request reprint Fenton digestion of milk for iodinalysis
    C Phillip Shelor
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019 0065, United States
    Anal Chem 83:8300-7. 2011
    ..Following digestion, iodine was found to exist entirely as iodide. Control of pH is imperative if loss cannot be corrected for by isotope dilution. Loss was below 20% for all samples when the pH was between 2.25 and 2.5...
  26. doi request reprint On-line electrodialytic salt removal in electrospray ionization mass spectrometry of proteins
    Yongjing Chen
    Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019 0065, USA
    Anal Chem 83:1015-21. 2011
    ..Good-quality ESI-MS spectra of cytochrome c, myoglobin, and lysozyme as test proteins in a saline solution, passed through the SR, are demonstrated...
  27. doi request reprint Trace iodine quantitation in biological samples by mass spectrometric methods: the optimum internal standard
    Jason V Dyke
    Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409 1061, USA
    Talanta 79:235-42. 2009
    ..Use of (129)I as an internal standard resulted in excellent recovery of iodine from both milk and urine samples using either IC-MS/MS and ICP-MS...
  28. ncbi request reprint Hybrid fluorometric flow analyzer for ammonia
    Natchanon Amornthammarong
    Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409 1061, USA
    Anal Chem 78:1890-6. 2006
    ..Precision for liquid-phase injections is even better (n = 1520, [NH4+(aq)] = 2.5 microM, RSD = 2%). The response decreases by 3.6% from 20 to 80% relative humidity...
  29. doi request reprint Perchlorate production by ozone oxidation of chloride in aqueous and dry systems
    Namgoo Kang
    Department of Civil and Environmental Engineering, Texas Tech University, Lubbock, Texas 79409 1023, USA
    Sci Total Environ 405:301-9. 2008
    ..It also suggests that ClO(2)(-) may be a key intermediate while ClO(3)(-) and OCl(-) are unlikely to play a significant role...
  30. pmc Cobinamide-based cyanide analysis by multiwavelength spectrometry in a liquid core waveguide
    Jian Ma
    Department of Chemistry and Biochemistry, University of Texas, 700 Planetarium Place, Arlington, Texas 76019 0065, USA
    Anal Chem 82:6244-50. 2010
    ..We demonstrate applicability by analyzing the hydrolytic cyanide extract of apple and pear seeds with orange seeds as control and also measure HCN in breath air samples. Spike recoveries in these sample extracts ranged from 91 to 108%...
  31. doi request reprint Characterization of a constant current charge detector
    Masanobu Mori
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019 0065, USA
    Talanta 102:44-52. 2012
    ..Analyte peak widths and peak asymmetries were found to be governed by the mobility of the analyte ions and their affinities for the IEMs, respectively...
  32. doi request reprint Free solution hydrodynamic separation of DNA fragments from 75 to 106,000 base pairs in a single run
    Xiayan Wang
    Department of Chemistry and Biochemistry, The University of Oklahoma, Norman, Oklahoma 73019, USA
    J Am Chem Soc 132:40-1. 2010
    ..We also demonstrate that attractive separation is possible in a few minutes and that the separated DNA can be collected into individual fractions that remain viable for amplification via the polymerase chain reaction...
  33. ncbi request reprint Charge detector for the measurement of ionic solutes
    Bingcheng Yang
    Department of Chemistry and Biochemistry, University of Texas, 700 Planetarium Place, Arlington, Texas 76019 0065
    Anal Chem 82:951-8. 2010
    ....
  34. ncbi request reprint Versatile gas/particle ion chromatograph
    S M Rahmat Ullah
    Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409 1061, USA
    Environ Sci Technol 40:962-8. 2006
    ....
  35. doi request reprint Automated measurement of urinary creatinine by multichannel kinetic spectrophotometry
    Shin ichi Ohira
    Department of Chemistry and Biochemistry, University of Texas at Arlington, 700 Planetarium Place, Arlington, TX 76019 0065, USA
    Anal Biochem 384:238-44. 2009
    ..9906). The developed system allows rapid, simple, cost-effective, and robust creatinine analysis and is suitable for the analysis of large numbers of urine samples...
  36. ncbi request reprint Measurement of ammonia in human breath with a liquid-film conductivity sensor
    Kei Toda
    Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409 1061, USA
    Anal Chem 78:7284-91. 2006
    ..For breath CO2 measurement, the applicability of a similar sensor that relies on a NaOH film was also demonstrated...
  37. doi request reprint Use of a capacitance measurement device for surrogate noncontact conductance measurement
    Masaki Takeuchi
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019 0065, United States
    Talanta 76:617-20. 2008
    ..The detection limits deteriorate as the conduit inner diameter decreases...
  38. ncbi request reprint Robust hybrid flow analyzer for formaldehyde
    In Yong Eom
    Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79400 1061, USA
    Environ Sci Technol 42:1221-6. 2008
    ..Features of the data, including an episode in which the HCHO concentration exceeded 50 ppbv, the highest reported ambient HCHO concentration in North America to our knowledge, are discussed in some detail...
  39. ncbi request reprint pH- and concentration-programmable electrodialytic buffer generator
    Yongjing Chen
    Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019 0065, USA
    Anal Chem 84:59-66. 2012
    ..We also demonstrate an additive-subtractive mode of operation where both inward and outward currents are used to add one type of ion while removing another type of ion to reproducibly generate pH/concentration gradients...
  40. pmc Flow batteries for microfluidic networks: configuring an electroosmotic pump for nonterminal positions
    Chiyang He
    Department of Chemistry and Biochemistry, The University of Oklahoma, Norman, Oklahoma 73019, United States
    Anal Chem 83:2430-3. 2011
    ..In a fluidic system powered by flow batteries, a hydraulic equivalent of Ohm's law can be applied to analyze system pressures and flow rates...
  41. ncbi request reprint A continuous analyzer for soluble anionic constituents and ammonium in atmospheric particulate matter
    Rida Al-Horr
    Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409 1061, USA
    Environ Sci Technol 37:5711-20. 2003
    ..With a 15 min analytical cycle and a sampling rate of 5 L/min, the limit of detection (LOD) for ammonium is 8 ng/m3 and those for sulfate, nitrate, and oxalate are < or = 0.1 ng/m3. The system has been extensively field tested...
  42. ncbi request reprint Gas collection efficiency of annular denuders: a spreadsheet-based calculator
    Jordan M Berg
    Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409 1021, United States
    Anal Chim Acta 664:56-61. 2010
    ..The present spreadsheet calculator can be used easily and simply without training and will be a useful tool for denuder users and designers...
  43. ncbi request reprint Summertime ambient formaldehyde in five U.S. metropolitan areas: Nashville, Atlanta, Houston, Philadelphia, and Tampa
    Purnendu K Dasgupta
    Department of Chemistry, Texas Tech University, Lubbock, Texas 79409 1061, USA
    Environ Sci Technol 39:4767-83. 2005
    ..The data set presented here can be used as a benchmark for future measurements if the use of formaldehyde precursors such as methanol or methyl tert-butyl ether (MTBE) as oxygenated fuel additives increases in the future...
  44. doi request reprint Sensing parts per million levels of gaseous NO2 by a optical fiber transducer based on calix[4]arenes
    Shin ichi Ohira
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019 0065, USA
    Talanta 77:1814-20. 2009
    ..The nitrosonium calixarene derivative tends to transform to the nitrated form; this process is catalyzed by light. Several methylated calixarenes were synthesized and tested but a fully satisfactory solution has proven elusive...
  45. doi request reprint A time-gated fluorescence detector using a tuning fork chopper
    Qingyang Li
    Department of Chemistry and Biochemistry, Texas Tech University, 700 Planetarium Place, Lubbock, TX 79409 1061, USA
    Anal Chim Acta 616:63-8. 2008
    ....
  46. doi request reprint Polymethylmethacrylate open tubular ion exchange columns: nondestructive measurement of very small ion exchange capacities
    Min Zhang
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019 0065, United States
    Anal Chem 85:7994-8000. 2013
    ..The latex used contained a significant, additional amount of weak base character, about the same as the strong base ion exchange capacity. ..
  47. ncbi request reprint Doped soap membranes selectively permeate a chiral isomer
    Tinakorn Kanyanee
    Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
    J Am Chem Soc 132:18045-7. 2010
    ..6:1) of α(+)-pinene over α(-)-pinene...
  48. ncbi request reprint Oxidation state-differentiated measurement of aqueous inorganic arsenic by continuous flow electrochemical arsine generation coupled to gas-phase chemiluminescence detection
    Mrinal K Sengupta
    Department of Chemistry and Biochemistry, University of Texas at Arlington, 700 Planetarium Place, Arlington, Texas 76019 0065, United States
    Anal Chem 83:9378-83. 2011
    ..The basic electrochemical arsine generation technique and current-differentiated oxidation state speciation should be applicable as the front end to many other arsenic measurements techniques, including atomic spectrometry...
  49. pmc Temperature dependence of Henry's law constant for hydrogen cyanide. Generation of trace standard gaseous hydrogen cyanide
    Jian Ma
    Department of Chemistry and Biochemistry, University of Texas, 700 Planetarium Place, Arlington, Texas 76019 0065, USA
    Environ Sci Technol 44:3028-34. 2010
    ..86 and 3.22 at 25.0 and 37.8 degrees C, respectively. The technique also allows for convenient generation of trace levels of HCN at ppbv-ppmv levels that can be further diluted...
  50. ncbi request reprint Determination of trace perchlorate in high-salinity water samples by ion chromatography with on-line preconcentration and preelution
    Kang Tian
    The Institute of Environmental and Human Health and Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409 1061, USA
    Anal Chem 75:701-6. 2003
    ..The ability of this approach to remove matrix interferences suggests that it would be also promising for perchlorate analysis in other challenging samples...
  51. ncbi request reprint Durable microfabricated high-speed humidity sensors
    Petr Kuban
    Department of Chemistry and Biochemistry, and NanoTech Center, Texas Tech University, Lubbock, Texas 79409, USA
    Anal Chem 76:2561-7. 2004
    ..We demonstrate applications as a breath monitor. Such sensors should also be of utility in atmospheric eddy measurements. Short-term repeatability is better than 0.6% RSD (n = 7)...
  52. ncbi request reprint Fiber optic sensor for simultaneous determination of atmospheric nitrogen dioxide, ozone, and relative humidity
    Shin ichi Ohira
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, 700 Planetarium Place, Arlington, Texas 76019 0065
    Anal Chem 81:4183-91. 2009
    ..Overall, this provides a viable affordable approach for inexpensive measurement of atmospheric NO(2) and O(3)...
  53. pmc Nanocapillaries for open tubular chromatographic separations of proteins in femtoliter to picoliter samples
    Xiayan Wang
    Department of Chemistry and Biochemistry, The University of Oklahoma, Norman, Oklahoma 73019, USA
    Anal Chem 81:7428-35. 2009
    ..We achieve baseline resolution for a protein mixture consisting of transferrin, alpha-lactalbumin, insulin, and alpha-2-macroglobulin...
  54. ncbi request reprint A cold plasma dielectric barrier discharge atomic emission detector for atmospheric mercury
    Mahitti Puanngam
    Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019 0065, USA
    Talanta 81:1109-15. 2010
    ..8 to 4.9%. In 19 separate calibrations conducted over 7 days, the calibration slope had a standard error of 1%. The system was applied to the determination of atmospheric mercury in two different locations...
  55. ncbi request reprint Oxygen-independent poly(dimethylsiloxane)-based carbon-paste glucose biosensors
    Joseph Wang
    Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM 88003, USA
    Biosens Bioelectron 17:999-1003. 2002
    ..On-line continuous testing indicates favorable dynamic properties with no carry-over effects over the physiological and pathophysiological range (3-12 mM glucose)...
  56. ncbi request reprint Microscale continuous ion exchanger
    Petr Kuban
    Department of Chemistry and Biochemistry, Texas Tech University, Lubbock 79409 1061, USA
    Anal Chem 74:5667-75. 2002
    ..Theoretical models and computations are presented along with experimental results. The potential of such a system as a chip-scale post-separation suppressor/reactor is evident...
  57. ncbi request reprint Perchlorate in milk
    Andrea B Kirk
    The Institute of Environmental and Human Health, MS 1163, USA
    Environ Sci Technol 37:4979-81. 2003
    ..5 microg/L. The levels found ranged from 1.7 to 6.4 microg/L. An evaporated milk sample contained perchlorate at 1.1 +/- 0.6 microg/L level, while we did not find detectable levels in a reconstituted powdered milk sample...
  58. ncbi request reprint Field instrument for simultaneous large dynamic range measurement of atmospheric hydrogen sulfide, methanethiol, and sulfur dioxide
    Kei Toda
    Department of Environmental Science, Faculty of Science, Kumamoto University, 2 39 1 Kurokami, Kumamoto 860 8555, Japan
    Environ Sci Technol 38:1529-36. 2004
    ..Walkaround portability of the instrument and very large dynamic range measurement of H2S and SO2 were demonstrated around the Mt. Aso volcano...