Document Detail

Determination method for total arsenic and partial-digestion method with nitric acid for inorganic arsenic speciation in several varieties of rice.
MedLine Citation:
PMID:  20827054     Owner:  NLM     Status:  In-Process    
The determination method of total arsenic (As) and the speciation method of inorganic As for non-glutinous rice reported in our preceding paper were applied to several varieties of rice under optimized experimental conditions. In the determination of total As with ICP-MS, acetic acid was added to increase the sensitivity and an internal reference method with germanium was adopted to increase the precision. The extraction temperature in the partial-digestion method with nitric acid to speciate inorganic As was raised to 100 degrees C, because extraction efficiency over 90% was obtained from glutinous rice and colored rice at this temperature. In the investigation of polished and unpolished forms of non-glutinous, glutinous, and colored rice, the amounts of total and inorganic As were 0.04-0.54 mg/kg and 0.02-0.41 mg/kg, respectively. The color of rice was not related to total or inorganic As content. These results indicate that the inorganic As content in commercial rice should be carefully monitored.
Tsutomu Nishimura; Megumi Hamano-Nagaoka; Naoki Sakakibara; Takashi Abe; Yoshiaki Maekawa; Tamio Maitani
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan     Volume:  51     ISSN:  1882-1006     ISO Abbreviation:  Shokuhin Eiseigaku Zasshi     Publication Date:  2010  
Date Detail:
Created Date:  2010-09-09     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0142214     Medline TA:  Shokuhin Eiseigaku Zasshi     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  178-81     Citation Subset:  IM    
Japan Food Research Laboratories, Shizuoka, Japan.
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