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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Horner, Nolan S. Beauchemin, Diane |
| Description | Country affiliation: Canada Author Affiliation: Horner NS ( Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, ON K7L 3N6, Canada.) |
| Abstract | A previously developed method based on continuous on-line leaching with artificial gastro-intestinal fluids was used to determine the bio-accessible fraction of As, Cu, Fe, V and Zn in brown and white rice from California by inductively coupled mass spectrometry (ICP-MS). Saliva generally accounted for the largest percentage of total element leached in comparison to gastric and intestinal juices. Arsenic speciation analysis was performed on the saliva and gastric juice leachates using ion exchange chromatography coupled to ICP-MS. The four most toxic species of As (As(III), monomethylarsonic acid (MMA), dimethylarsinic acid (DMA) and As(V)), as well as Cl(-) in the gastric juice leachate, were successfully separated within 5.5min using a simple nitric acid gradient. While cooking rice had relatively little effect on total bio-accessibility, a change in species from As(V) and DMA to As(III) was observed for both types of rice. On the other hand, washing the rice with doubly deionized water prior to cooking removed a large percentage of the total bio-accessible fraction of As, Cu, Fe, V and Zn. |
| File Format | HTM / HTML |
| ISSN | 00032670 |
| Volume Number | 758 |
| e-ISSN | 18734324 |
| Journal | Analytica Chimica Acta |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2013-01-03 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Analytical Discipline Chemistry Arsenic Analysis Copper Iron Oryza Sativa Chemistry Vanadium Zinc Cooking Equipment Design Food Analysis Instrumentation Methods Gastric Juice Humans Mass Spectrometry Saliva Water Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Environmental Chemistry Analytical Chemistry Biochemistry |
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