کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6332822 1619798 2013 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Human health risk assessment of heavy metals in soil-vegetable system: A multi-medium analysis
ترجمه فارسی عنوان
ارزیابی ریسک سلامت انسان از فلزات سنگین در سیستم های گیاهی خاک: یک تجزیه چندسطحی
کلمات کلیدی
آلودگی فلزات سنگین، صنعت خانوادگی، خطر غیر سرطان زا، خطر سرطان، قرار گرفتن در معرض چند رسانه ای،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی
Vegetable fields near villages in China are suffering increasing heavy metal damages from various pollution sources including agriculture, traffic, mining and Chinese typical local private family-sized industry. 268 vegetable samples which included rape, celery, cabbages, carrots, asparagus lettuces, cowpeas, tomatoes and cayenne pepper and their corresponding soils in three economically developed areas of Zhejiang Province, China were collected, and the concentrations of five heavy metals (Pb, Cd, Cr, Hg and As) in all the samples were determined. The health risk assessment methods developed by the United States Environmental Protection Agency (US EPA) were employed to explore the potential health hazards of heavy metals in soils growing vegetables. Results showed that heavy metal contaminations in investigated vegetables and corresponding soils were significant. Pollution levels varied with metals and vegetable types. The highest mean soil concentrations of heavy metals were 70.36 mg kg− 1 Pb, 47.49 mg kg− 1 Cr, 13.51 mg kg− 1 As, 0.73 mg kg− 1 for Cd and 0.67 mg kg− 1 Hg, respectively, while the metal concentrations in vegetables and corresponding soils were poorly correlated. The health risk assessment results indicated that diet dominated the exposure pathways, so heavy metals in soil samples might cause potential harm through food-chain transfer. The total non-cancer and cancer risk results indicated that the investigated arable fields near industrial and waste mining sites were unsuitable for growing leaf and root vegetables in view of the risk of elevated intakes of heavy metals adversely affecting food safety for local residents. Chromium and Pb were the primary heavy metals posing non-cancer risks while Cd caused the greatest cancer risk. It was concluded that more effective controls should be focused on Cd and Cr to reduce pollution in this study area.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volumes 463–464, 1 October 2013, Pages 530-540
نویسندگان
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