采用高效液相色谱-电感耦合等离子体质谱法对米粉中的砷进行提取和形态分析。
The extraction and speciation of arsenic in rice flour by HPLC-ICP-MS.
作者信息
Narukawa Tomohiro, Inagaki Kazumi, Kuroiwa Takayoshi, Chiba Koichi
机构信息
Inorganic Analytical Chemistry Division, National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 3, 1-1-1 Umezono, Tsukuba, Ibaraki, 305-8563, Japan.
出版信息
Talanta. 2008 Oct 19;77(1):427-32. doi: 10.1016/j.talanta.2008.07.005. Epub 2008 Jul 12.
Several solvent mixtures and techniques for the extraction of arsenic (As) species from rice flour samples prior to their analysis by HPLC-ICP-MS were investigated. Microwave-assisted extraction using water at 80 degrees C for 30 min provided the highest extraction efficiency. Total recoveries of extracted As species were in good agreement with the total As concentrations determined by ICP-MS after microwave-assisted acid digestion of the samples. Arsenite [As(III)], arsenate [As(V)] and dimethylarsinic acid (DMAA) were the main species detected in rice flour samples.
研究了几种用于在通过HPLC-ICP-MS分析之前从米粉样品中提取砷（As）物种的溶剂混合物和技术。在80℃下用水进行30分钟的微波辅助萃取提供了最高的萃取效率。萃取的As物种的总回收率与样品经微波辅助酸消解后通过ICP-MS测定的总As浓度高度一致。亚砷酸盐[As(III)]、砷酸盐[As(V)]和二甲基砷酸（DMAA）是在米粉样品中检测到的主要物种。
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