Analysis of endocrine disruptors, pharmaceuticals, and personal care products in water using liquid chromatography/tandem mass spectrometryBrett J Vanderford
Southern Nevada Water Authority, 243 Lakeshore Road, Boulder City, Nevada 89005, USA
Anal Chem 75:6265-74. 2003
..Matrix effects from waters with a high content of treated municipal effluent were observed in both ESI modes and are discussed in the paper...
On-line solid phase extraction LC-MS/MS analysis of pharmaceutical indicators in water: a green alternative to conventional methodsRebecca A Trenholm
Water Quality Research and Development Department, Southern Nevada Water Authority, Henderson, NV 89015, USA
Talanta 79:1425-32. 2009
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- Pharmaceuticals and endocrine disrupting compounds in U.S. drinking water
Mark J Benotti
Applied Research and Development Center, Southern Nevada Water Authority, P O Box 99954, Las Vegas, Nevada 89193 9954, USA
Environ Sci Technol 43:597-603. 2009
..Atenolol, atrazine, DEET, estrone, meprobamate, and trimethoprim can serve as indicator compounds representing potential contamination from other pharmaceuticals and EDCs and can gauge the efficacy of treatment processes...
- Assessment of sample preservation techniques for pharmaceuticals, personal care products, and steroids in surface and drinking water
Brett J Vanderford
Southern Nevada Water Authority, P O Box 99954, Las Vegas, NV 89193 9954, USA
Anal Bioanal Chem 399:2227-34. 2011
..Results suggest that if improper protocols are utilized, reported concentrations of target PPCPs and steroids may be inaccurate...
- Characterization of fulvic acids by liquid chromatography-quadrupole time-of-flight mass spectrometry
Douglas B Mawhinney
Southern Nevada Water Authority, P O Box 99954, Las Vegas, NV 89193 9954, USA
J Chromatogr A 1216:1319-24. 2009
..Lastly, the analysis of even and odd mass (at m/z 1 greater) ion intensity ratios revealed a correlation to the percent nitrogen of the various standards...
- Real-time detection and identification of aqueous chlorine transformation products using QTOF MS
Brett J Vanderford
Southern Nevada Water Authority, P O Box 99954, Las Vegas, Nevada 89193 9954, USA
Anal Chem 80:4193-9. 2008
..Atorvastatin underwent hydroxylation to form two transformation products with the empirical formulas C33H34FN2O6 (1.8 ppm mass error) and C26H29O5NF (2.9 ppm mass error)...
- Analysis of p-chlorobenzoic acid in water by liquid chromatography-tandem mass spectrometry
Brett J Vanderford
Southern Nevada Water Authority, Henderson, NV 89015, USA
J Chromatogr A 1164:219-23. 2007
..Duplicate samples were analyzed by LC-MS/MS and LC-UV and results were found to be comparable at concentrations quantifiable by both methods...
- Analysis of pharmaceuticals in water by isotope dilution liquid chromatography/tandem mass spectrometry
Brett J Vanderford
Southern Nevada Water Authority, 1350 Richard Bunker Avenue, Henderson, Nevada 89015, USA
Environ Sci Technol 40:7312-20. 2006
..The method reporting limits for all compounds were between 0.25 and 1.0 ng/L, based on 500 mL of sample extracted and a final extract volume of 500 microL. Occurrence of the compounds in all five matrices is also reported...
- Broad range analysis of endocrine disruptors and pharmaceuticals using gas chromatography and liquid chromatography tandem mass spectrometry
Rebecca A Trenholm
Water Quality Research and Development Department, Southern Nevada Water Authority, 1350 Richard Bunker Avenue, Henderson, NV 89015, USA
Chemosphere 65:1990-8. 2006
..Instrument detection limits ranged between 0.12-7.5 pg with corresponding method reporting limits of 1-10 ng l(-1) in water. Recoveries for most compounds were between 50% and 112% with good reproducibility (RSD 6-22%)...
- Artificial sweetener sucralose in U.S. drinking water systems
Douglas B Mawhinney
Southern Nevada Water Authority, Las Vegas, Nevada 89193, USA
Environ Sci Technol 45:8716-22. 2011
..e., tap) water, as well as an indicator compound for the presence of other recalcitrant compounds in finished drinking water in the U.S...
- Determination of household chemicals using gas chromatography and liquid chromatography with tandem mass spectrometry
Rebecca A Trenholm
Applied Research and Development Center, Water Quality Research and Development Division, Southern Nevada Water Authority, 1350 Richard Bunker Road, Henderson, NV 89015, USA
J Chromatogr A 1190:253-62. 2008
..MGK-11, methylresorcinol, trifluralin, hexabromododecane, acriflavin and atrazine were not detected in any samples. The method described here detects a broad range of HPV chemicals with great sensitivity and selectivity...
- Trace analysis of bromate, chlorate, iodate, and perchlorate in natural and bottled waters
Shane A Snyder
Water Quality Research and Development Department, Southern Nevada Water Authority, 1350 Richard Bunker Avenue, Henderson, Nevada 89015, USA
Environ Sci Technol 39:4586-93. 2005
..From the limited data set provided here, it appears that perchlorate is a ubiquitous contaminant of natural waters at trace levels...
- Two new methods of synthesis for the perbromate ion: chemistry and determination by LC-MS/MS
Aleksey N Pisarenko
Southern Nevada Water Authority, Applied Research and Development Center, P O Box 99954, Las Vegas, Nevada 89193, USA
Inorg Chem 50:8691-3. 2011
..Furthermore, it was discovered that the perbromate ion was also formed as a result of the electrospray ionization process. Selective reduction of the bromate ion prior to analysis was used to confirm the two formation pathways...
- Occurrence and removal of pharmaceuticals and endocrine disruptors in South Korean surface, drinking, and waste waters
Sang D Kim
Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology, 1 Oryong dong, Buk Gu, Gwangju 500 712, South Korea
Water Res 41:1013-21. 2007
..g., acetaminophen, ibuprofen, and caffeine). Membrane filtration processes using reverse osmosis (RO) and nanofiltration (NF) showed excellent removal (>95%) for all target analytes...
