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论文类型：期刊论文

发表时间：2019-05-01

发表刊物：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH

收录刊物：PubMed、SCIE

卷号：26

期号：15,SI

页面范围：15011-15018

ISSN号：0944-1344

关键字：Microplastic; Adsorption; Structural damage; Size-dependent toxicity

摘要：The combined effect of polystyrene (PS) particles and triphenyltin chloride (TPTCl) to the green algae Chlorella pyrenoidosa was studied. The 96h IC50 of TPTCl to the green algae C. pyrenoidosa was 30.64g/L. The toxicity of PS particles to C. pyrenoidosa was size-dependent, with the 96h IC50 at 9.10mg/L for 0.55m PS but no toxicity observed for 5.0m PS. The exposure to 0.55m PS led to damage on structure of algal cells, which could in turn cause inhibition on photosynthesis and population growth of the green algae. TPTCl concentrations in test medium were lowered by 15-19% at presence of 0.55m PS particles, indicating a reduced bioavailability of TPTCl. In spite of this reduced bioavailability, the presence of PS increased the toxicity of TPTCl, which might be attributed to facilitated uptake of TPTCl by the green algae after the damage of cell structure. The overall results of the present study provided important information on the effect of PS on the bioavailability and toxicity of TPTCl to phytoplankton species.