Accumulation and Risk Assessment of Heavy Metals in Vegetables in Wastewater Irrigation Areas

Jun Ying Zhao; Xing Long Jin; Zhao Li Shen; Hua Ming Guo

doi:10.4028/www.scientific.net/AMR.183-185.527

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 183-185Accumulation and Risk Assessment of Heavy Metals...

Accumulation and Risk Assessment of Heavy Metals in Vegetables in Wastewater Irrigation Areas

Abstract:

Concentrations of selected heavy metals (Cd, Cu, Pb, Cr and Zn) were determined in vegetables (radish, tomato, gourd, celery, lettuce, Chinese lettuce, Garland chrysanthemum, rape, Chinese cabbage, Sonchus) from the wastewater irrigation area in Tianjin, China. Cd contents in the edible parts were not significantly different among all vegetables. Zn concentration in the leafy vegetables was the highest of all the heavy metals. The metal contents in the vegetables were compared with the Chinese national standards for food quality. The contaminant index of Cr, Pb, Cd and Zn varied respectively between from11.96 to 22.26, from 5.36 to 14.43, from 0.95 to 15.4 and from 0 to 4.06. Although Cu content of the vegetables except lettuce was lower the permitted standard, the results indicated these vegetables could not be regarded as safety for human consumption.

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Periodical:

Advanced Materials Research (Volumes 183-185)

Pages:

527-531

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.183-185.527

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Online since:

January 2011

Authors:

Jun Ying Zhao, Xing Long Jin, Zhao Li Shen, Hua Ming Guo

Keywords:

Heavy Metal, Risk Assessment for Safety, Single Factor Contaminant Index Method, Vegetable, Wastewater Irrigation Area

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