Certified Reference Material for Analytical Quality Assurance of Minor and Trace Elements in Food and Related Matrixes Based on a Typical Japanese Diet: Interlaboratory Study
Author:
Yoshinaga Jun1, Morita Masatoshi1, Yukawa Masae2, Shiraishi Kunio2, Kawamura Hisao2, Arae H, Baker S, Barnes R M, Dang H S, De Regge P, Funato Y, Futatsugawa K, Hirai S, Kato T, Kawamoto K, Matsubara M, Matsue H, Miller-Ihli N J, Muramatsu Y, Narukawa T, Okada Y, Reitznerová E, Sakamoto H, Sera K, Shindo K, Suzuki S, Takata J, Takeuchi T, Tamari Y, Tanizaki Y, Veillon C, Yasui A, Yonezawa C,
Affiliation:
1. National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-0053, Japan; Present address: Institute of Environmental Studies, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan 2. National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
Abstract
Abstract
A Certified Reference Material (CRM) was prepared at the National Institute for Environmental Studies (NIES), Japan, in collaboration with the National Institute of Radiological Sciences (NIRS), Japan, for the analytical quality assurance of minor and trace elements in food and related matrixes. The starting material for the CRM was all food served in 29 households in Japan over two 3-day periods in 1997–1998, and thus the CRM represented a typical Japanese diet. All foods (meals, snacks, and beverages) were homogenized, freeze-dried, pulverized, blended, dispensed into 1100 bottles, and sterilized. The within- and between-bottle homogeneity of the prepared CRM was satisfactory for most of the elements. The concentrations of 14 elements (Na, Mg, K, Ca, Mn, Cu, Zn, As, Se, Sr, Cd, Sn, Ba, and U) were certified based on a collaborative analysis involving NIES, NIRS, and 20 other laboratories. Reference values were given for the concentrations of 12 additional elements (P, Cl, Fe, Co, Ni, Br, Rb, Mo, I, Cs, Pb, and Th). The elements certified and those given reference values include minerals, essential trace elements, contaminant elements, and long-lived radionuclides. Thus, this CRM is of practical value in the quality assurance of element analysis of foods and diets in nutritional, environmental, and radiological research.
Publisher
Oxford University Press (OUP)
Subject
Pharmacology,Agronomy and Crop Science,Environmental Chemistry,Food Science,Analytical Chemistry
Cited by
15 articles.
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