The status of pesticide residues in vegetables produced in Chongqing is now largely clear.

Release Date:

2019-01-04

In 2017, the Institute of Agricultural Quality Standards and Testing Technology at the Chongqing Academy of Agricultural Sciences analyzed the levels of 19 pesticide residues in vegetables (common Chinese cabbage, yardlong beans, snap beans, tomatoes, and cucumbers) produced in the suburban areas of Chongqing. It then assessed the health risks associated with these pesticide residues using a veterinary drug residue risk ranking method and a food safety index analysis. The results showed that dimethomorph, imidacloprid, chlorantraniliprole, metalaxyl, procymidone, and pyridaben had the highest detection rates, significantly exceeding those of other pesticides. According to the maximum residue limits (MRLs) specified in GB 2763-2016, nine snap bean samples exceeded the MRL for phosmet.

　　In 2017, the Institute of Agricultural Quality Standards and Testing Technology at the Chongqing Academy of Agricultural Sciences conducted an analysis of 19 substances in vegetables (napa cabbage, yardlong beans, snap beans, tomatoes, and cucumbers) produced in the suburban areas of Chongqing. Pesticide Residue levels were analyzed, and the veterinary drug residue risk ranking method and the food safety index analysis method were employed to assess… Pesticide The residual health risks were assessed.
　　The results indicate that the detection rates of dimethomorph, imidacloprid, chlorantraniliprole, metalaxyl, procymidone, and pyridaben ranked in the top six, and were significantly higher than those of the other compounds. Pesticide According to the maximum residue limits (MRLs) specified in GB 2763-2016, nine snap bean samples exceeded the MRL for chlorpyrifos; four common cabbage samples also exceeded the limit. Pesticide They are fipronil, chlorpyrifos, omethoate, and cypermethrin; one sample each of yardlong beans and tomatoes exceeded the maximum residue limits. Pesticide They are omethoate and difenoconazole, respectively. According to the risk‑ranking matrix method for veterinary drug residues, phosmet, pyridaben, avermectin, and fipronil are classified as high‑risk substances. Pesticide Residue. According to Pesticide According to the residual safety index analysis, omethoate and fipronil pose a high risk to human health, while pyridaben, chlorpyrifos‑methyl, and dimethomorph present risks to human health, though within acceptable limits; the remaining substances… Pesticide The risk to human health is negligible.
　　Based on the results obtained from the two evaluation methods, the researchers recommend that, to ensure the quality and safety of vegetables produced in Chongqing, priority should be given to addressing the prohibition of certain substances. Pesticide In addition to the regulatory oversight of chlorpyrifos, omethoate, and fipronil, attention should also be given to the food‑safety risks posed by pyridaben, dimethomorph, avermectin, difenoconazole, cypermethrin, chlorantraniliprole, metalaxyl, and procymidone.
　　Author’s comment: Partial Pesticide Due to production processes, a small amount of monocrotophos impurity is generated during the manufacture of organophosphorus active ingredients such as chlorpyrifos, triazophos, and diazinon. Therefore, the key measure for preventing excessive residues of monocrotophos remains the strict and full implementation of the former Ministry of Agriculture’s regulation prohibiting the use of chlorpyrifos and triazophos on vegetable crops, while also striving to standardize the use of other organophosphorus compounds. Pesticide Its use. Of course, other pesticides such as omethoate and fipronil are prohibited for use on vegetables. Pesticide Moreover, we must completely eliminate any violations of regulations.