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Objective To investigate the pesticide residue of fruits and vegetables in Qingpu District of Shanghai, Valuate the risk assessment of pesticide residues in primary and middle school students in Qingpu district. Methods From 2021 to 2022, 252 fruits and vegetables from 7 towns in Qingpu District of Shanghai were collected, and 46 pesticide residues in fruits and vegetables were detected by LC/MS. The acute and chronic dietary exposure risks of primary and secondary school students in Qingpu District of Shanghai was assessed using the results of pesticide residue detection, combined with food consumption in the dietary nutrient intake survey of Qingpu students. Results 15 pesticides of all total 46 pesticides were detected, 12 pesticides exceeded the standard, the highest detection rate was tthiamethoxam (29.76%), the highest exceeding rate was clothianidin (27.78%). Among the 6 kinds of fruits and vegetables, the highest detection rate was strawberry (88.10%), and the highest o exceeding rate was solanaceae (76.19%). The dietary exposure results showed that the acute exposure risks (acute hazardquotient) of methamidophos and dichlorvos weir 562% and 452% respectively, the chronic exposure risk (chronic hazardquotient) of dichlorvos was 434%, and the dietary acute chronic exposure risks of other pesticides were less than 100%. Conclusion There are pesticide residues in fruits and vegetables in Qingpu District of Shanghai. The dietary exposure risk of methamphetamine and dichlorvos in fruits and vegetables is high, which should be paid attention to by the regulatory authorities. The dietary exposure risk of other pesticides is low, but the high detection rate and over-standard rate of fruits and vegetables should be paid attention to.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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