TY - JOUR

T1 - Development of human hair reference material supporting the biomonitoring of methylmercury

AU - HARAGUCHI, Koichi

AU - Sakamoto , Mineshi

AU - MATSUYAMA, Akito

AU - YAMAMOTO, Megumi

AU - HUNG, Dang T.

AU - NAGASAKA, Hiromitsu

AU - UCHIDA, Keisuke

AU - ITO, Yasunori

AU - KODAMATANI, Hitoshi

AU - HORVAT, Milena

AU - CHAN, Hing M.

AU - RAND, Matthew

AU - CIRTIU, Ciprian M.

AU - KIM, Byoung-Gwon

AU - NIELSEN, Flemming

AU - YAMAKAWA, Akane

AU - MASHYANOV, Nikolay

AU - PANICHEV, Nikolai

AU - PANOVA, Elena

AU - WATANABE, Tomoaki

AU - KANEKO, Naoki

AU - YOSHINAGA, Jun

AU - HERWATI, Ranny F.

AU - SUOTH, Alfrida E.

AU - AKAGI, Hirokatsu

N1 - Funding Information: The authors are grateful to Dr. Tsutomu Miura (National Institute of Advanced Industrial Science and Technology) for constructive comments on estimating for uncertainty. We also thank Dr. Tomoharu Sano (National Institute for Environmental Studies) for advice on CRM production, and Dr. Takashi Tomiyasu (Kagoshima University) and Dr. Alain LeBIanc (Institut National de Sante Publique du Quebec) for preparing the inter-laboratory study. The authors thank Yoshiyuki Takagi (Kankyo Technos Co. Ltd.), Tadahiko Takeda (Fritsch Japan Co. Ltd.), Tsuyoshi Shiraishi (Seishin Enterprise Co. Ltd.), and Tetsuya Wada (Tohoreinetsu Co. Ltd.) for their supports in the preparation of the hair powder. We further thank Edanz Group (www.edanzediting.com/ac) for editing a draft of this manuscript.

PY - 2020/5

Y1 - 2020/5

N2 - A certified reference material. NIMD-01, was developed for the analysis of mercury speciation in human hair. We collected the hair of Vietnamese males from a barbershop in Hanoi in 2016 and prepared 1200 bottles containing 3 g of sieved and blended hair powder. The certified value was given on a dry-mass basis, with the moisture content obtained by drying at 85°C for 4 h. Certified values with the expanded uncertainties (coverage factor, k = 2) were as follows: methylmercury, 0.634 ±0.071 mg kg -1 as mercury; total mercury. 0.794 ± 0.050 mg kg -1; copper, 12.8 ± 1.4 mgkg -1; /inc. 234 ± 29 mg kg -1; selenium, 1.52 ± 0.29 mg kg -1. An indicative arsenic concentration of 0.17 ± 0.03 mg kg 1 was measured. Extended uncertainties were estimated by sample homogeneity, long-and short-term stabilities, and a characterization from measurements made by collaborating laboratories.

AB - A certified reference material. NIMD-01, was developed for the analysis of mercury speciation in human hair. We collected the hair of Vietnamese males from a barbershop in Hanoi in 2016 and prepared 1200 bottles containing 3 g of sieved and blended hair powder. The certified value was given on a dry-mass basis, with the moisture content obtained by drying at 85°C for 4 h. Certified values with the expanded uncertainties (coverage factor, k = 2) were as follows: methylmercury, 0.634 ±0.071 mg kg -1 as mercury; total mercury. 0.794 ± 0.050 mg kg -1; copper, 12.8 ± 1.4 mgkg -1; /inc. 234 ± 29 mg kg -1; selenium, 1.52 ± 0.29 mg kg -1. An indicative arsenic concentration of 0.17 ± 0.03 mg kg 1 was measured. Extended uncertainties were estimated by sample homogeneity, long-and short-term stabilities, and a characterization from measurements made by collaborating laboratories.

KW - Human biomonitoring

KW - Mercury speciation

KW - Methylmercury

KW - Reference material

UR - http://www.scopus.com/inward/record.url?scp=85084721664&partnerID=8YFLogxK

U2 - 10.2116/analsci.19SBP07

DO - 10.2116/analsci.19SBP07

M3 - Article

VL - 36

SP - 561

EP - 567

JO - Analytical Sciences

JF - Analytical Sciences

SN - 0910-6340

IS - 5

ER -