Abstract:
To evaluate the multiple pesticide residues and the contribution to chronic dietary exposure risks in Hainan mango samples, 178 mango samples were analyzed and the contribution to chronic dietary exposure risk (
R) for different Chinese populations was calculated. The most frequently detected pesticide groups were strobilurin and neonicotinoid, and the detection rates were higher than 80.00%. According to the MRLs in China, pyraclostrobin in 39 samples, imidacloprid in 34 samples, clothianidin in 5 samples, difenoconazole in 2 samples, methomyl in 1 sample and paclobutrazol in 1 sample exceeded the MRLs. 71.91% of the samples contained two or more pesticide residues, and the number of detected pesticides was up to 8 in some mango samples. The percentage of mango samples with two or more pesticides of strobilurin or neonicotinoid were 23.03% and 16.30%, respectively. Azoxystrobin/pyraclostrobin, imidacloprid/pyraclostrobin, and imidacloprid/azoxystrobin were the most frequently detected pesticide combinations. The values of
R were far below 1, which indicated that the contribution of pesticide residues through mango to the chronic dietary exposure risk was extremely low.