Fate of Iprobenfos and Tricyclazole at Paddy Cultivation Environment
Objectives This study aimed to identify the fate of iprobenfos and tricyclazole in the soil and paddy water during the rice cultivation process and to identify their exposure pathways into surface water. Methods Both iprobenfos and tricyclazole were sprayed onto two sample sites following the pestic...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Korean Society of Environmental Engineers
2023-12-01
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| Series: | 대한환경공학회지 |
| Subjects: | |
| Online Access: | http://www.jksee.or.kr/upload/pdf/KSEE-2023-45-12-603.pdf |
| _version_ | 1797311422817894400 |
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| author | Hyosub Lee Gunhee Jung Hyanghee Kim Juhyeon Min Taekkyum Kim |
| author_facet | Hyosub Lee Gunhee Jung Hyanghee Kim Juhyeon Min Taekkyum Kim |
| author_sort | Hyosub Lee |
| collection | DOAJ |
| description | Objectives This study aimed to identify the fate of iprobenfos and tricyclazole in the soil and paddy water during the rice cultivation process and to identify their exposure pathways into surface water. Methods Both iprobenfos and tricyclazole were sprayed onto two sample sites following the pesticide safety usage guidelines. Residues in the samples. Soil, paddy water, and drainage water samples were collected for 28 days after post-application. Residues were subsequently analyzed using LC-MS/MS. Results and Discussion The fate of the two pesticides, iprobenfos and tricyclazole, in the rice cultivation environment was influenced by factors such as soil half-life, Koc, water solubility, formulation, and precipitation patterns. Initial concentrations of iprobenfos and tricyclazole in the paddy field near the drainage were 5,774 μg/L and 307 μg/L, respectively, while concentrations in the drain water were 1,850 μg/L and 182 μg/L. Four days after application, the residual concentrations of iprobenfos and tricyclazole in both paddy and drain water ranged from N.D. (Not Detected) to 5.6 μg/L and N.D. to 56 μg/L, respectively, indicating a rapid decline. During the experimental period, the average concentration reduction ratios in drain water near the drainage compared to the drain water were higher for tricyclazole (90%) than for iprobenfos (52%). Conclusion The soil and water half-life of tricyclazole exceeded that of iprobenfos, leading to a slower rate of concentration reduction. The lower Koc value for tricyclazole suggests enhanced soil desorption due to rainfall, increasing its concentration in paddy fields. The presence of iprobenfos and tricyclazole in surface water is likely due to dispersion during pesticide application. While concentrations diminish owing to the dilution effect when water moves from paddy fields to surface water, it's posited that runoff could affect nearby stream water within seven days post-application. |
| first_indexed | 2024-03-08T01:58:26Z |
| format | Article |
| id | doaj.art-05f9b7ef86b44a2a903e86c4841580f8 |
| institution | Directory Open Access Journal |
| issn | 1225-5025 2383-7810 |
| language | English |
| last_indexed | 2024-03-08T01:58:26Z |
| publishDate | 2023-12-01 |
| publisher | Korean Society of Environmental Engineers |
| record_format | Article |
| series | 대한환경공학회지 |
| spelling | doaj.art-05f9b7ef86b44a2a903e86c4841580f82024-02-14T06:49:31ZengKorean Society of Environmental Engineers대한환경공학회지1225-50252383-78102023-12-01451260361110.4491/KSEE.2023.45.12.6034492Fate of Iprobenfos and Tricyclazole at Paddy Cultivation EnvironmentHyosub Lee0Gunhee Jung1Hyanghee Kim2Juhyeon Min3Taekkyum Kim4Residual Agrochemical Assessment Division, National Institute of Agricultural Sciences, Republic of KoreaResidual Agrochemical Assessment Division, National Institute of Agricultural Sciences, Republic of KoreaResidual Agrochemical Assessment Division, National Institute of Agricultural Sciences, Republic of KoreaDepartment of Food Science and Technology, Kyungpook National University, Republic of KoreaResidual Agrochemical Assessment Division, National Institute of Agricultural Sciences, Republic of KoreaObjectives This study aimed to identify the fate of iprobenfos and tricyclazole in the soil and paddy water during the rice cultivation process and to identify their exposure pathways into surface water. Methods Both iprobenfos and tricyclazole were sprayed onto two sample sites following the pesticide safety usage guidelines. Residues in the samples. Soil, paddy water, and drainage water samples were collected for 28 days after post-application. Residues were subsequently analyzed using LC-MS/MS. Results and Discussion The fate of the two pesticides, iprobenfos and tricyclazole, in the rice cultivation environment was influenced by factors such as soil half-life, Koc, water solubility, formulation, and precipitation patterns. Initial concentrations of iprobenfos and tricyclazole in the paddy field near the drainage were 5,774 μg/L and 307 μg/L, respectively, while concentrations in the drain water were 1,850 μg/L and 182 μg/L. Four days after application, the residual concentrations of iprobenfos and tricyclazole in both paddy and drain water ranged from N.D. (Not Detected) to 5.6 μg/L and N.D. to 56 μg/L, respectively, indicating a rapid decline. During the experimental period, the average concentration reduction ratios in drain water near the drainage compared to the drain water were higher for tricyclazole (90%) than for iprobenfos (52%). Conclusion The soil and water half-life of tricyclazole exceeded that of iprobenfos, leading to a slower rate of concentration reduction. The lower Koc value for tricyclazole suggests enhanced soil desorption due to rainfall, increasing its concentration in paddy fields. The presence of iprobenfos and tricyclazole in surface water is likely due to dispersion during pesticide application. While concentrations diminish owing to the dilution effect when water moves from paddy fields to surface water, it's posited that runoff could affect nearby stream water within seven days post-application.http://www.jksee.or.kr/upload/pdf/KSEE-2023-45-12-603.pdfpaddy cultivation environmentiprobenfostricyclazoleexposure to surface water |
| spellingShingle | Hyosub Lee Gunhee Jung Hyanghee Kim Juhyeon Min Taekkyum Kim Fate of Iprobenfos and Tricyclazole at Paddy Cultivation Environment 대한환경공학회지 paddy cultivation environment iprobenfos tricyclazole exposure to surface water |
| title | Fate of Iprobenfos and Tricyclazole at Paddy Cultivation Environment |
| title_full | Fate of Iprobenfos and Tricyclazole at Paddy Cultivation Environment |
| title_fullStr | Fate of Iprobenfos and Tricyclazole at Paddy Cultivation Environment |
| title_full_unstemmed | Fate of Iprobenfos and Tricyclazole at Paddy Cultivation Environment |
| title_short | Fate of Iprobenfos and Tricyclazole at Paddy Cultivation Environment |
| title_sort | fate of iprobenfos and tricyclazole at paddy cultivation environment |
| topic | paddy cultivation environment iprobenfos tricyclazole exposure to surface water |
| url | http://www.jksee.or.kr/upload/pdf/KSEE-2023-45-12-603.pdf |
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