| 谢慧,李金玲,刘瑞源,王世霖,黄炜,李旭龙,于世亮.新烟碱类杀虫剂哌虫啶在3种典型土壤中的生物有效性[J].农业环境科学学报,2024,43(2):254-261. |
| 新烟碱类杀虫剂哌虫啶在3种典型土壤中的生物有效性 |
| Bioavailability of neonicotinoid insecticide paichongding in three typical soils |
| 投稿时间：2023-04-17 |
| DOI：10.11654/jaes.2023-0297 |
| 中文关键词: 哌虫啶 蚯蚓 生物有效性 降解 |
| 英文关键词: paichongding earthworm bioavailability degradation |
| 基金项目:山东省重点研发计划项目（2021CXGC010801） |
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| 中文摘要: |
| 为探究新烟碱类杀虫剂哌虫啶在3种典型土壤中的降解及其生物有效性，本研究在室内模拟土壤生境，以赤子爱胜蚯蚓和哌虫啶分别作为受试模式生物和目标污染物，采用蚯蚓生物富集量和间接生物测量法，研究哌虫啶在不同类型土壤中的生物有效性。研究结果表明：哌虫啶在棕壤、红壤和黑土中的降解半衰期分别为11.45~12.62、12.42~14.38 d和5.19~10.21 d，在3种典型土壤中的降解速度为黑土>棕壤>红壤。哌虫啶在蚯蚓体内的生物累积量随其在土壤中含量的增加而增大，在10 mg·kg-1哌虫啶处理下，棕壤、红壤和黑土中蚯蚓体内哌虫啶的含量分别为190、210 ng·g-1和160 ng·g-1，生物富集法研究表明，哌虫啶在黑土中的生物有效性较低，在红壤和棕壤中的生物有效性相对较高。不同处理的蚯蚓受到哌虫啶的氧化胁迫，其蛋白质含量、抗氧化酶活性、谷胱甘肽巯基转移酶活性和丙二醛含量具有显著的差异性（P<0.05），各指标在黑土中受到的影响较小，在棕壤和红壤中受到的影响较大，哌虫啶在有机质含量丰富的黑土中生物有效性较弱，而在棕壤和红壤中生物有效性较强。 |
| 英文摘要: |
| An in-lab simulation experiment was conducted to investigate the degradation and bioavailability of paichongding, a neonicotinoid insecticide, in three soils. The test model organism was the earthworm（Eisenia foetida）, while paichongding served as the target pollutant. Bioaccumulation in earthworms and indirect bioassay were used to assess the bioavailability of paichongding in the three soils. The results indicated that the half-life values of paichongding in brown, red, and black soils were 11.45–12.62, 12.42–14.38 days, and 5.19–10.21 days, respectively. The degradation rates of paichongding in the three soils followed this order： black soil > brown soil > red soil. The bioaccumulation of paichongding in earthworms increased in the soil with higher concentrations of paichongding. Under the treatment of 10 mg·kg-1 in brown, red, and black soil, the concentrations of paichongding in earthworms were 190, 210 ng·g-1, and 160 ng·g-1, respectively. The bioaccumulation results revealed that the bioavailability of paichongding was low in black soil, while it was relatively high in red and brown soils. Earthworms subjected to paichongding exhibited oxidative stress, resulting in significant differences in protein content, antioxidant enzyme activity, glutathione-S-transferases activity, and malondialdehyde content. The impact was relatively minor in black soil but significant in brown and red soils. The bioavailability was weaker in black soil with higher organic matter content and stronger in brown and red soils. |
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