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ucin1249602453.pdf (3.33 MB)
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The Toxicity Assessment of Heavy Metals and Their Species in Rice
Author Info
Zhang, Julie Zhiling
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1249602453
Abstract Details
Year and Degree
2009, MS, University of Cincinnati, Arts and Sciences : Chemistry.
Abstract
There is an accumulation of minerals and other elements in rice. Related to health, and particularly nutritional concerns, twenty (20) rice samples of different varieties and origins obtained from the US market were investigated for twenty-four (24) elements by using inductively coupled plasma mass spectrometry (ICP-MS). Arsenic species in Jasmine brown and white rice (Royal Thailand), Basmati brown and white rice (Royal India), and Nishiki brown and white rice (JFC California, US) were also studied by coupling high performance liquid chromatography (HPLC) with ICP-MS. Selenium species in Basmati brown and white rice (Royal India) were also studied by HPLC-ICP-MS. The study indicates essential elements are accumulated more in brown rice. There are heavy metals of cadmium, lead, antimony, and chromium in the rice samples tested, but the content is not enough for concern. 34 to 333 ppb of arsenic is found in the rice. The arsenic content in the most of white rice samples is in the range of 150 to 225 ppb. The brown rice shows more arsenic. As (III), As (V), and dimethylarsinic acid (DMA) are the species found in the three type of rice and these varied among different rice types. The Basmati rice, regardless to the origins, trends to contain more aluminum and selenium. Little selenium (IV) is presented in Basmati white rice (Royal India).
Committee
Joseph Caruso (Committee Chair)
Thomas Ridgway (Committee Member)
Pages
91 p.
Subject Headings
Chemistry
Keywords
HPLC
;
HPLC-ICP-MS
;
ICP-MS
;
heavy metals
;
speciation analysis
;
arsenic
;
selenium
Recommended Citations
Refworks
EndNote
RIS
Mendeley
Citations
Zhang, J. Z. (2009).
The Toxicity Assessment of Heavy Metals and Their Species in Rice
[Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1249602453
APA Style (7th edition)
Zhang, Julie.
The Toxicity Assessment of Heavy Metals and Their Species in Rice.
2009. University of Cincinnati, Master's thesis.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1249602453.
MLA Style (8th edition)
Zhang, Julie. "The Toxicity Assessment of Heavy Metals and Their Species in Rice." Master's thesis, University of Cincinnati, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1249602453
Chicago Manual of Style (17th edition)
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Document number:
ucin1249602453
Download Count:
2,655
Copyright Info
© 2009, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.