Authors: Tomohiro Narukawa Koichi Chiba Takayoshi Kuroiwa Takashi Yarita Akiko Takatsu
Publish Date: 2007/07/17
Volume: 389, Issue: 2, Pages: 661-666
Abstract
An arsenobetaine CH33As+CH2COO− solution reference material NMIJ CRM 7901a intended for use in the speciation of arsenic compounds was developed and certified by the National Metrology Institute of Japan NMIJ part of the National Institute of Advanced Industrial Science and Technology AIST The highpurity arsenobetaine powder was synthesized from trimethylarsine CH33As and it was dissolved in water in order to prepare 20 mg kg−1 of arsenobetaine standard solution The solution was bottled in 500 bottles each containing 10 ml Certification of the CRM for arsenobetaine was conducted by NMIJ The concentration of As was determined by four independent analytical techniques ICP–MS ICP–OES GFAAS and LC–ICP–MS and each result was converted to the arsenobetaine concentration by applying an appropriate factor The arsenobetaine concentration in the CRM was thus certified
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