Potential exposure and risk assessment of agricultural workers to the insecticide chlorantraniliprole in rice paddies. Issue 2 (27th October 2022)

• Record Type: Journal Article
• Authors: Lee, Jiho; Lee, Junghak; Jung, Minwoo; Shin, Yongho; Kim, JiWoo; Kim, Jeong‐Han
• Is Part Of: Pest management science. Volume 79:Issue 2(2023)
• Page Start: 678
• Page End: 687
• Publication Date: 2022-10-27
• Subjects: exposure -- chlorantraniliprole -- whole‐body dosimetry -- IOM sampler -- risk assessment; Pests -- Control -- Periodicals; Pesticides -- Periodicals; 632.9
• DOI: 10.1002/ps.7235
• Languages: English
• ISSNs: 1526-498X

Abstract

Abstract: BACKGROUND: Exposure of agricultural workers in rice paddies to the insecticide chlorantraniliprole and its subsequent potential health risks were investigated during two scenarios (mixing/loading and hand‐held spraying). The exposure factors, such as the outer dosimeter, inner dosimeter, gauze, and nitrile gloves, were calculated using whole‐body dosimetry to measure dermal exposure. The inhalation exposure was determined using a fiberglass filter which is set with an Institute of Occupational Medicine (IOM) sampler. A recovery test was performed to evaluate the accuracy of the analytical method. RESULTS: The exposure amounts of various matrices were calculated from extraction volume and concentration of the target compound. The dermal exposure to chlorantraniliprole was 0.6 mg [0.001% of the total active ingredient (a.i.)] for mixing and loading, and 28.6 mg (0.066% of the total a.i.) for application. The inhalation exposure to chlorantraniliprole was 7.2 μg (1.3%, 1.2 × 10 −5 % of the total applied a.i.) for mixing and loading, and 1.9 μg (0.006%, 4.4 × 10 −6 % of the total applied a.i.) for application. The most exposed part of the body was the hand (90.4%) during mixing and loading, whereas the primary sites during application were the thighs (32.8%) and shins (22.6%). For mixing and loading, the amount of actual dermal exposure was 5.5 μg day −1 and that of actual inhalation exposure was 21.9 μg day −1 . By contrast, in the application, the amounts of actual dermal and actual inhalation exposures were 34 178.7 and 5.9 μg day −1, respectively. CONCLUSIONS: The risk assessment results demonstrated that the risk of chlorantraniliprole exposure in rice paddies was low during application than during mixing and loading. © 2022 Society of Chemical Industry. Abstract : Risk assessment of agricultural workers exposed to chlorantraniliprole during mixing/loading and application in rice fields was performed. To measure the dermal and inhalation exposure, whole body dosimetry (WBD) and IOM sampler were used. Actual exposure amount and clothing penetration rates were compared with previous studies. Pesticide exposure distribution of agricultural operator.