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| Toxic effects of three chlorinated alkyl organic phosphate esters on Folsomia candida in soil |
| Received:December 18, 2024 |
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| KeyWord:organic phosphate esters;invertebrate;toxic effects;enzyme activity;soil |
| Author Name | Affiliation | E-mail | | LIU Peng | College of Land and Environment, Shenyang Agricultural University, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Northeast Key Laboratory of Conservation and Improvement of Cultivated Land, Ministry of Agriculture and Rural Affairs, Shenyang 110866, China
Center for Environmental Health Risk Assessment and Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | WEI Xinni | College of Land and Environment, Shenyang Agricultural University, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Northeast Key Laboratory of Conservation and Improvement of Cultivated Land, Ministry of Agriculture and Rural Affairs, Shenyang 110866, China | | | SHI Jiayue | College of Land and Environment, Shenyang Agricultural University, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Northeast Key Laboratory of Conservation and Improvement of Cultivated Land, Ministry of Agriculture and Rural Affairs, Shenyang 110866, China | | | GAO Ge | Center for Environmental Health Risk Assessment and Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | ZHU Hang | College of Land and Environment, Shenyang Agricultural University, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Northeast Key Laboratory of Conservation and Improvement of Cultivated Land, Ministry of Agriculture and Rural Affairs, Shenyang 110866, China | | | ZHAO Long | Center for Environmental Health Risk Assessment and Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | DANG Xiuli | College of Land and Environment, Shenyang Agricultural University, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Northeast Key Laboratory of Conservation and Improvement of Cultivated Land, Ministry of Agriculture and Rural Affairs, Shenyang 110866, China | dxl@syau.edu.cn |
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| Abstract: |
| To clarify the toxicity differences of different chloroalkyl organic phosphate esters on soil-dwelling invertebrate springtail, survival rates, reproduction number, and changes in antioxidant enzyme activity were measured as the evaluation endpoints to study the toxicity effects of three exogenous organic phosphate esters（tri（2-chloroethyl）phosphate ester（TCEP）, tri-（2-chloropropyl）phosphate ester（TCPP）, and tri（1, 3-dichloro-2-propyl）phosphate ester（TDCPP））on model organism Folsomia candida in black. The results showed that the LC50（median lethal concentration）of TCEP and TCPP for acute toxicity（7 days）to Folsomia candida were less than 1 000 mg·kg-1, respectively, while the LC50 of TDCPP exceeded 1 000 mg·kg-1. The EC50（half effect concentration）of TCEP, TCPP, and TDCPP for the chronic toxicity of Folsomia candida（28 days）were 52.8, 9.0 mg·kg-1, and 12.3 mg·kg-1, respectively. TCPP had a significant inducing effect on SOD activity（P<0.05）in chronic toxicity, and the activity of CAT was most affected by TDCPP, showing an inhibitory effect（P<0.05）. TCEP significantly induced the activities of SOD and CAT activity at a low concentration（6 mg·kg-1）, while it inhibits them at a high concentration（48 mg·kg-1）. The results of this study provide data support and theoretical basis for evaluating the ecological risks of chloroalkyl organic phosphate esters on soil invertebrates. Based on the toxicity thresholds, it can be inferred that the chronic toxicity of the three chloroalkyl organic phosphate esters decreased in the following order：TCPP>TDCPP>TCEP. |
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