Tomohiro Narukawa

Summary

Affiliation: National Institute of Advanced Industrial Science and Technology
Country: Japan

Publications

  1. ncbi request reprint Preparation and certification of arsenobetaine reference material NMIJ CRM 7901-a
    Tomohiro Narukawa
    Environmental Standard Section, National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 3, 1 1 1 Umezono, Tsukuba, Ibaraki 305 8563, Japan
    Anal Bioanal Chem 389:661-6. 2007
  2. ncbi request reprint Oxygenation mechanism of ions in dynamic reaction cell ICP-MS
    Tomohiro Narukawa
    National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan
    Anal Sci 29:747-52. 2013
  3. ncbi request reprint Aqueous extraction of water-soluble inorganic arsenic in marine algae for speciation analysis
    Tomohiro Narukawa
    National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan
    Anal Sci 28:773-9. 2012
  4. doi request reprint Speciation and monitoring test for inorganic arsenic in white rice flour
    Tomohiro Narukawa
    Inorganic Analytical Chemistry Division, National Metrology Institute of Japan NMIJ, National Institute of Advanced Industrial Science and Technology AIST, Tsukuba, Ibaraki, Japan
    J Agric Food Chem 60:1122-7. 2012
  5. doi request reprint The extraction and speciation of arsenic in rice flour by HPLC-ICP-MS
    Tomohiro Narukawa
    Inorganic Analytical Chemistry Division, National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 3, 1 1 1 Umezono, Tsukuba, Ibaraki, 305 8563, Japan
    Talanta 77:427-32. 2008
  6. doi request reprint Heat-assisted aqueous extraction of rice flour for arsenic speciation analysis
    Tomohiro Narukawa
    National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan
    J Agric Food Chem 58:8183-8. 2010
  7. ncbi request reprint Effect of the chemical species of arsenic on sensitivity in graphite furnace atomic absorption spectrometry
    Tomohiro Narukawa
    National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Umezono, Tsukuba, Ibaraki, Japan
    Anal Sci 24:355-60. 2008
  8. ncbi request reprint Development of a certified reference material (NMIJ CRM 7531-a) for the determination of trace cadmium and other elements in brown rice flour
    Shin Ichi Miyashita
    Environmental Standards Section, National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305 8563, Japan
    Anal Sci 28:1171-7. 2012
  9. doi request reprint Preparation and certification of hijiki reference material, NMIJ CRM 7405-a, from the edible marine algae hijiki (Hizikia fusiforme)
    Tomohiro Narukawa
    Environmental Standard Section, National Metrology Institute of Japan NMIJ, National Institute of Advanced Industrial Science and Technology AIST, Tsukuba Central 3, 1 1 1 Umezono, Tsukuba, Ibaraki 305 8563, Japan
    Anal Bioanal Chem 402:1713-22. 2012
  10. doi request reprint Certification of methylmercury in cod fish tissue certified reference material by species-specific isotope dilution mass spectrometric analysis
    Kazumi Inagaki
    Environmental Standard Section, National Metrology Institute of Japan, Umezono 1 1 1, Tsukuba Central 3, Tsukuba, Ibaraki, 305 8563, Japan
    Anal Bioanal Chem 391:2047-54. 2008

Collaborators

Detail Information

Publications23

  1. ncbi request reprint Preparation and certification of arsenobetaine reference material NMIJ CRM 7901-a
    Tomohiro Narukawa
    Environmental Standard Section, National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 3, 1 1 1 Umezono, Tsukuba, Ibaraki 305 8563, Japan
    Anal Bioanal Chem 389:661-6. 2007
    ..The arsenobetaine concentration in the CRM was thus certified...
  2. ncbi request reprint Oxygenation mechanism of ions in dynamic reaction cell ICP-MS
    Tomohiro Narukawa
    National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan
    Anal Sci 29:747-52. 2013
    ....
  3. ncbi request reprint Aqueous extraction of water-soluble inorganic arsenic in marine algae for speciation analysis
    Tomohiro Narukawa
    National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan
    Anal Sci 28:773-9. 2012
    ..The proposed method is appropriate for environmental monitoring for inorganic As speciation in algae...
  4. doi request reprint Speciation and monitoring test for inorganic arsenic in white rice flour
    Tomohiro Narukawa
    Inorganic Analytical Chemistry Division, National Metrology Institute of Japan NMIJ, National Institute of Advanced Industrial Science and Technology AIST, Tsukuba, Ibaraki, Japan
    J Agric Food Chem 60:1122-7. 2012
    ..15 ± 0.07 mg kg(-1) (highest, 0.32 mg kg(-1)), which is very low. It was thus confirmed that the white rice flour samples collected in this experiment were not suffered from noticeable As contamination...
  5. doi request reprint The extraction and speciation of arsenic in rice flour by HPLC-ICP-MS
    Tomohiro Narukawa
    Inorganic Analytical Chemistry Division, National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 3, 1 1 1 Umezono, Tsukuba, Ibaraki, 305 8563, Japan
    Talanta 77:427-32. 2008
    ..Arsenite [As(III)], arsenate [As(V)] and dimethylarsinic acid (DMAA) were the main species detected in rice flour samples...
  6. doi request reprint Heat-assisted aqueous extraction of rice flour for arsenic speciation analysis
    Tomohiro Narukawa
    National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan
    J Agric Food Chem 58:8183-8. 2010
    ..The sums of the concentrations of all species in each rice flour sample were 97-102% of the total arsenic concentration in each sample...
  7. ncbi request reprint Effect of the chemical species of arsenic on sensitivity in graphite furnace atomic absorption spectrometry
    Tomohiro Narukawa
    National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Umezono, Tsukuba, Ibaraki, Japan
    Anal Sci 24:355-60. 2008
    ..Moreover, it was observed that some co-existing organic materials enhanced the analytical sensitivity of inorganic As. The sensitivity difference between inorganic As and AB depended upon the mechanisms of their atomization processes...
  8. ncbi request reprint Development of a certified reference material (NMIJ CRM 7531-a) for the determination of trace cadmium and other elements in brown rice flour
    Shin Ichi Miyashita
    Environmental Standards Section, National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305 8563, Japan
    Anal Sci 28:1171-7. 2012
    ..The range of the relative combined standard uncertainties was from 1.1% of Zn to 1.6% of As...
  9. doi request reprint Preparation and certification of hijiki reference material, NMIJ CRM 7405-a, from the edible marine algae hijiki (Hizikia fusiforme)
    Tomohiro Narukawa
    Environmental Standard Section, National Metrology Institute of Japan NMIJ, National Institute of Advanced Industrial Science and Technology AIST, Tsukuba Central 3, 1 1 1 Umezono, Tsukuba, Ibaraki 305 8563, Japan
    Anal Bioanal Chem 402:1713-22. 2012
    ..The uncertainties of all the measurements and preparation procedures were evaluated. The values of 18 trace elements and As(V) in the CRM were certified with uncertainty (k = 2)...
  10. doi request reprint Certification of methylmercury in cod fish tissue certified reference material by species-specific isotope dilution mass spectrometric analysis
    Kazumi Inagaki
    Environmental Standard Section, National Metrology Institute of Japan, Umezono 1 1 1, Tsukuba Central 3, Tsukuba, Ibaraki, 305 8563, Japan
    Anal Bioanal Chem 391:2047-54. 2008
    ..The certified value given for MeHg is 0.58 +/- 0.02 mg kg(-1) as Hg...
  11. doi request reprint Identification of possible technical problems in determination of the major inorganic constituents of brown-rice flour by evaluating proficiency test results
    Shin Ichi Miyashita
    Environmental Standards Section, National Metrology Institute of Japan NMIJ, National Institute of Advanced Industrial Science and Technology AIST, 1 1 1 Umezono, Tsukuba, Ibaraki, 305 8563, Japan
    Anal Bioanal Chem 405:8347-62. 2013
    ..The PT results and analytical procedures, reported in detail, were reviewed, and possible technical reasons for questionable or unsatisfactory results are discussed...
  12. ncbi request reprint Development of a certified reference material (NMIJ CRM 7512-a) for the determination of trace elements in milk powder
    Yanbei Zhu
    National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan
    Anal Sci 29:247-53. 2013
    ..The concentrations of As (2.1 μg kg(-1)), Cd (0.2 μg kg(-1)), Cr (1.3 μg kg(-1)), Pb (0.3 μg kg(-1)), and Y (64 μg kg(-1)) were given as information values for the present CRM...
  13. doi request reprint Preparation and certification of arsenate [As(V)] reference material, NMIJ CRM 7912-a
    Tomohiro Narukawa
    Environmental Standard Section, National Metrology Institute of Japan NMIJ, National Institute of Advanced Industrial Science and Technology AIST, Tsukuba Central 3, 1 1 1 Umezono, Tsukuba, Ibaraki, 305 8563, Japan
    Anal Bioanal Chem 397:493-9. 2010
    ..The uncertainties of all the measurements and preparation procedures were evaluated. The certified value of As(V) in the CRM is (99.53 +/- 1.67) mg kg(-1) (k = 2)...
  14. ncbi request reprint Development of a certified reference material (NMIJ CRM 7505-a) for the determination of trace elements in tea leaves
    Yanbei Zhu
    Environmental Standard Section, National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan
    Anal Sci 27:1149-55. 2011
    ..The range of the relative combined standard uncertainties was from 1.5% of Mg and K to 4.1% of Cd...
  15. ncbi request reprint Accurate determination of arsenic in arsenobetaine standard solutions of BCR-626 and NMIJ CRM 7901-a by neutron activation analysis coupled with internal standard method
    Tsutomu Miura
    National Metrology Institute of Japan, AIST, Tsukuba Central 3, 1 1 1 Umezono, Tsukuba, Ibaraki 305 8563, Japan
    Talanta 82:1143-8. 2010
    ..These values were found to be 15-20% higher than the certified values. The between-bottle variation of BCR-626 was much larger than the expanded uncertainty of the certified value, although that of NMIJ CRM 7901-a was almost negligible...
  16. ncbi request reprint Determination of cadmium in grains by isotope dilution ICP-MS and coprecipitation using sample constituents as carrier precipitants
    Kazumi Inagaki
    Environmental Standards Section, National Metrology Institute of Japan NMIJ, National Institute of Advanced Industrial Science and Technology, Tsukuba central 3 10, Umezono 1 1 1, Tsukuba, Ibaraki 305 8563, Japan
    Anal Bioanal Chem 389:691-6. 2007
    ..Good analytical results with small uncertainties were obtained for all samples. This method is simple and reliable for the determination of Cd in grain samples by ID-ICPMS...
  17. ncbi request reprint Investigation on chemical species of arsenic, selenium and antimony in fly ash from coal fuel thermal power stations
    Tomohiro Narukawa
    Inorganic Analytical Chemistry Division, National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 3, 1 1 1 UmezonoTsukuba, Ibaraki, 305 8563, Japan
    J Environ Monit 7:1342-8. 2005
    ..The main species of Se was Se(IV), although it was found that the ratio of Se(VI) to Se(IV) in acidic fly ashes is higher than in alkaline fly ash samples. Antimony was mostly present as Sb(III)...
  18. ncbi request reprint Certified reference material for quantification of polycyclic aromatic hydrocarbons and toxic elements in tunnel dust (NMIJ CRM 7308-a) from the National Metrology Institute of Japan
    Nobuyasu Itoh
    National Metrology Institute of Japan NMIJ, National Institute of Advanced Industrial Science and Technology AIST, Tsukuba, Ibaraki, Japan
    Anal Bioanal Chem 401:2909-18. 2011
    ..Certified values of five toxic elements (Cr, Ni, Pb, Mn, and Cd) obtained from microwave-assisted digestions and a combination of measurement techniques are also provided between 43.4 and 10.71 × 10(3) mg/kg...
  19. ncbi request reprint Determination of sixteen elements and arsenic species in brown, polished and milled rice
    Tomohiro Narukawa
    National Metrology Institute of Japan NMIJ, National Institute of Advanced Industrial Science and Technology AIST
    Anal Sci 30:245-50. 2014
    ..As(III), As(V), MMAA and DMAA were detected, and the sums of the concentrations of all species in the extract were 86-105% of the total As concentration in each case...
  20. ncbi request reprint Suppression of the incoherent molecular formation effect by oxygen gas in arsenic analysis by ICP-MS
    Tomohiro Narukawa
    National Metrology Institute of Japan NMIJ, National Institute of Advanced Industrial Science and Technology AIST
    Anal Sci 30:609-12. 2014
    ..In addition, the use of O2 as a reaction gas is extremely effective for reducing the IMF effect and eliminating the sensitivity difference between As(III) and As(V)...
  21. ncbi request reprint The effect of plasma reactions on arsenic measurement by ICP spectrometry
    Koichi Chiba
    National Metrology Institute of Japan NMIJ, National Institute of Advanced Industrial Science and Technology AIST
    Anal Sci 30:175-81. 2014
    ..The mechanisms of the IMF effect and selective oxygenation of As with a reaction gas were investigated and the techniques to remove their influence on As determination are discussed. ..
  22. doi request reprint Quantification of oligonucleotide containing sequence failure product: comparison of isotope dilution mass spectrometry with other quantification methods
    Tomoya Kinumi
    National Metrology Institute of Japan NMIJ, National Institute of Advanced Industrial Science and Technology AIST, Tsukuba, Ibaraki 305 8563, Japan
    Eur J Mass Spectrom (Chichester, Eng) 15:399-407. 2009
    ....
  23. doi request reprint Cancer risk to Japanese population from the consumption of inorganic arsenic in cooked hijiki
    Yuko Nakamura
    School of Allied Health Sciences, Kitasato University, Sagamihara, Kanagawa, Japan
    J Agric Food Chem 56:2536-40. 2008
    ..0 x 10(-4)), which exceeded the acceptable level of 10(-5). Taking the risk of other cancers (bladder, lung, etc.) into consideration, the contribution to cancer occurrence through the consumption of hijiki seaweed may not be negligible...