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| Toxicity differences of different forms of antimony to soil-dwelling springtail(Folsomia candida) |
| Received:November 23, 2016 |
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| KeyWord:forms of antimony;toxicity differences;Folsomia candida;exposure routes |
| Author Name | Affiliation | E-mail | | LIN Xiang-long | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | SUN Zai-jin | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | MA Jin | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | ZHAO Long | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | QIN Xiao-peng | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | ZHAO Shu-ting | College of Resources and Environment, Yunnan Agricultural University, Kunming 650100, China | | | YANG Qiao | College of Land Science and Technology, China University of Geosciences, Beijing 100083, China | | | HOU Hong | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | houhong@craes.org.cn |
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| Abstract: |
| To explore the effect of antimony forms on its toxicity, we evaluated the acute and chronic toxic effects of two forms of antimony(SbIII and SbV) to Folsomia candida using filter paper contact experiment, soil and food exposure experiment. In filter paper contact experiment, the LC50 values for SbIII were 325 mg·L-1(3 d), 244 mg·L-1(7 d), respectively, but the survival of F. candida was not affected by SbV. In soil exposure experiment, the EC50 values of acute avoidance were 132, 344 mg·kg-1, respectively;the LC50 value of acute survival for SbⅢ was 2105 mg·kg-1(the mortality did not reach 50% in setting concentration range of SbV);The LC50 value of chronic survival for SbIII was 703 mg·kg-1(the LC50 for SbV was higher than the highest antimony concentration), the EC50 values of chronic reproduction were 307, 8501 mg·kg-1, respectively. In food exposure experiment, there were no obvious death of Folsomia candida in SbIII or SbV treatments, the EC50 values of chronic reproduction were 433, 8798 mg·kg-1,respectively. The results showed that SbV could not cause the death of the springtail directly, but impact on its physiological behavior and reproduction, whereas the toxicity of SbIII was more significant than that of SbV. Therefore, when assessing the toxic effects of Sb, both the total amount and the different forms should be considered. This study can accumulate and supplement the toxicity data as well as provide a more comprehensive basis for ecological risk assessment of Sb. |
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