Residue level and risk assessment of organophosphate pesticides and pyrethroids in Carya illinoensis and soil from Anhui province
[Objective]The study aimed to investigate the presence of residues from organophosphorus pesticides and pyrethroids in soil and fruits in the primary Carya illinoensis production areas of Anhui province,and to assess the risk associated with these residues.[Method]13 soil and fruit samples were gathered from the main C.illinoensis production area in Anhui province for analysis of residues of six organophosphorus pesticides and four pyrethroids.Ecological risks of pesticide residues in the soil were assessed using the risk quotient method,while a health index method was utilized to determine the health risks posed by pesticide residues in fruits.[Result]Pesticides were present in all soil samples,with concentrations ranging from n.d.-195.13 μg·kg-1(n.d.indicates undetected).The highest concentrations were found for cypermethrin(n.d.-195.1 μg·kg-1)and cypermethrin(n.d.-90.61 μg·kg-1).Parathion was detected in all soil samples at a rate of 100%,with a maximum of six pesticides found in a single soil sample.Only one fruit sample tested negative for pesticides,while agricultural drug levels in other samples ranged from n.d.-156.3 μg·kg-1,with the highest concentrations of cypermethrin(n.d.-156.3 μg·kg-1)and cypermethrin(n.d.-29.42 μg·kg-1).The detection rate for cypermethrin was the highest at 69.23%,with a maximum of four pesticides found in a single fruit sample.However,none of the concentrations of pesticide residues in the fruits exceeded the maximum residue levels set by China.Ecological risks from all pesticide residues in the soil varied between moderate and high risk levels,ΣRQ:0.16-2.48(ΣRQ represents the sum of ecological risks).The health risk values associated with ten pesticides were below 1,indicating that the health risk for adults consuming fruit was higher than that for children.[Conclusion]Pesticide residues are present to a certain extent in the soil and nut of C.illinoensis in the main producing areas of Anhui province,and while pesticide residues in the soil pose some ecological risks,pesticide residues in the nut pose no health risks to humans.This study can be used as a reference for food safety supervision of C.illinoensis in Anhui province.
万方数据
维普
