NDLI: Development of a Certified Reference Material (NMIJ CRM 7203-a) for Elemental Analysis of Tap Water.

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Development of a Certified Reference Material (NMIJ CRM 7203-a) for Elemental Analysis of Tap Water.

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Year: 2017 Volume: 33 Issue: 2

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Development of a Certified Reference Material (NMIJ CRM 7203-a) for Elemental Analysis of Tap Water.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Zhu, Yanbei Narukawa, Tomohiro Inagaki, Kazumi Miyashita, Shin-Ichi Kuroiwa, Takayoshi Ariga, Tomoko Kudo, Izumi Koguchi, Masae Heo, Sung Woo Suh, Jung Ki Lee, Kyoung-Seok Yim, Yong-Hyeon Lim, Youngran
Description	Author Affiliation: Zhu Y ( National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST).)
Abstract	A certified reference material (CRM), NMIJ CRM 7203-a, was developed for the elemental analysis of tap water. At least two independent analytical methods were applied to characterize the certified value of each element. The elements certified in the present CRM were as follows: Al, As, B, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Mo, Na, Ni, Pb, Rb, Sb, Se, Sr, and Zn. The certified value for each element was given as the (property value ± expanded uncertainty), with a coverage factor of 2 for the expanded uncertainty. The expanded uncertainties were estimated while considering the contribution of the analytical methods, the method-to-method variance, the sample homogeneity, the long-term stability, and the concentrations of the standard solutions for calibration. The concentration of Hg (0.39 µg kg ) was given as the information value, since loss of Hg was observed when the sample was stored at room temperature and exposed to light. The certified values of selected elements were confirmed by a co-analysis carried out independently by the NMIJ (Japan) and the KRISS (Korea).
File Format	HTM / HTML
ISSN	09106340
e-ISSN	13482246
Journal	Analytical Sciences
Issue Number	3
Volume Number	33
Language	English
Publisher	The Japan Society for Analytical Chemistry
Publisher Date	2017-01-01
Publisher Place	Japan
Access Restriction	Open
Subject Keyword	Discipline Analytical Discipline Chemistry Techniques
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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