Chlorpyrifos residue levels on field crops (rice,maize and soybean) in China and their dietary risks to consumers |
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| Affiliation: | 1. State Key Laboratory Breeding Base for Zhejiang Sustainable Plant Pest Control, Agricultural Ministry Key Laboratory for Pesticide Residue Detection, Zhejiang Province Key Laboratory for Food Safety, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China;2. National Shanghai Center for New Drug Safety Evaluation and Research, Shanghai 201203, PR China;3. College of Life Science and Technology, Southwest University for Nationalities, Chengdu, Sichuan 610041, PR China;1. Centre for Environment and Population Health, Griffith School of Environment and Science, Griffith University, 170 Kessel Road, Nathan, QLD 4111, Australia;2. Department of Environmental Science, College of Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana;1. Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture of PRC and Zhejiang Province, Zhejiang University, Hangzhou 310058, China;2. College of Environmental and Natural Resource Sciences, Zhejiang University, Hangzhou 310058, China;3. Department of Environmental Sciences, University of California, Riverside, CA 92521, USA |
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| Abstract: | In this study, chlorpyrifos residue levels in field crops of rice, maize and soybean were investigated according to the “Guideline on Pesticide Residue Trials” of China. On the basis of the residual results, human dietary risks were further evaluated. Chlorpyrifos residues of harvest grains were firstly prepared by QuEChERS method and analyzed using Gas Chromatography Tandem Mass Spectrometry (GC–MS/MS). Dietary risks were assessed by a deterministic approach. The median residues in field trials of rice, maize and soybean were 0.617, 0.0227 and 0.0136 mg kg−1, respectively. The highest residues in field trials of rice, maize and soybean were 3.23, 0.114 and 0.102 mg kg−1, respectively. Chronic intake assessment indicated that only 39.0% of acceptable daily intake (ADI, 0–0.01 mg kg bw−1 day−1) was consumed through rice, maize and soybean. The acute hazard indexes (aHI) of adults was 26.1% of acute reference dose (ARfD, 0–0.1 mg kg bw−1) and aHI of children was 63.5% of ARfD in dietary exposure assessment through rice, maize and soybean consumption. Single pathway risk assessment indicated that chlorpyrifos application on field crops in manner of the good agricultural practices didn't pose public health risks. |
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| Keywords: | Chlorpyrifos Rice Maize Soybean Residue Exposure assessment |
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