Analytical Sciences
Online ISSN : 1348-2246
Print ISSN : 0910-6340
ISSN-L : 0910-6340
Original Papers
Development of Human Hair Reference Material Supporting the Biomonitoring of Methylmercury
Koichi HARAGUCHIMineshi SAKAMOTOAkito MATSUYAMAMegumi YAMAMOTODang T. HUNGHiromitsu NAGASAKAKeisuke UCHIDAYasunori ITOHitoshi KODAMATANIMilena HORVATHing M. CHANMatthew RANDCiprian M. CIRTIUByoung-Gwon KIMFlemming NIELSENAkane YAMAKAWANikolay MASHYANOVNikolai PANICHEVElena PANOVATomoaki WATANABENaoki KANEKOJun YOSHINAGARanny F. HERWATIAlfrida E. SUOTHHirokatsu AKAGI
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2020 Volume 36 Issue 5 Pages 561-567

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Abstract

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 mg kg−1; zinc, 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.

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© 2020 by The Japan Society for Analytical Chemistry
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