Evaluation of toxic elements in rice (Oryza sativa) commercially available in Pakistan; multivariate study

Aftab A. K., . and Ahmed F., . and Jalbani N., . and Bhutto S., . and Mahroze A. K., . Evaluation of toxic elements in rice (Oryza sativa) commercially available in Pakistan; multivariate study. pp. 255-261. ISSN 22317546

The aim of this study was to determine the level of toxic elements in rice samples. Microwave-assisted digestion method was used for sample preparation to determine the cadmium (Cd) and lead (Pb). A Plackett“Burman experimental design (PBD) was used as a multivariate strategy for the evaluation of the effects of some important variables at once. Furthermore certain variable showed up as significant and they were optimized by using Plackett“Burman whereas most significant variables were optimized by 23 star central composite designs (CCD). The accuracy of the optimized procedure ensured by the analysis of certified reference material (CRM). Outcomes are that the highest values of Cd found in brown rice (0.0889 0.0056 mg/Kg) whilst the lowest concentration was found in white rice samples 0.001 0.0001 mg/Kg. There is a relatively significant differences were found between the two categories of rice samples at the p-values (P 0.05).

Full text available from: Official URL: http://ifrj.upm.edu.my/21%20(01)%202014/36%20IFRJ%...

Abstract

The aim of this study was to determine the level of toxic elements in rice samples. Microwave-assisted digestion method was used for sample preparation to determine the cadmium (Cd) and lead (Pb). A Plackett“Burman experimental design (PBD) was used as a multivariate strategy for the evaluation of the effects of some important variables at once. Furthermore certain variable showed up as significant and they were optimized by using Plackett“Burman whereas most significant variables were optimized by 23 star central composite designs (CCD). The accuracy of the optimized procedure ensured by the analysis of certified reference material (CRM). Outcomes are that the highest values of Cd found in brown rice (0.0889 0.0056 mg/Kg) whilst the lowest concentration was found in white rice samples 0.001 0.0001 mg/Kg. There is a relatively significant differences were found between the two categories of rice samples at the p-values (P 0.05).

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Item Type:	Article
AGROVOC Term:	Toxicity
AGROVOC Term:	Oryza sativa
AGROVOC Term:	Rice
AGROVOC Term:	Digestion
AGROVOC Term:	Cadmium
AGROVOC Term:	Lead
AGROVOC Term:	Heavy metals
AGROVOC Term:	Bioaccumulation
AGROVOC Term:	Chemical reagents
AGROVOC Term:	Spectrophotometers
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:26
URI:	http://webagris.upm.edu.my/id/eprint/21052

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