She majors in Environmental Science and has expertise in the field of Chemical Hazard Identification and Hydrobiology. Wang Lei (1983–) is an associate professor in Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection. This work was supported by the Natural Science Foundation of Jiangsu Province (General Program). The data showed that the EC 10-based HC 5 was protective at the similar level with the result of microcosm for 4-TBP, providing supportive data for chemical risk assessment.
Nevertheless, EC 50-based HC 5 was higher than the NOEC microcosm, and the NOEC-based HC 5 was lower. For the microcosm exposed to 4-TBP, significant changes occurred to the community structure instead of the community function, resulting in a NOEC microcosm of 265.38 μg L –1 which approached the EC 10-based HC 5 (0.376 mg L –1). ) was the most sensitive species to 4-TBP exposure, while most algae species were relatively insensitive compared to the zooplankton. In both the microcosm and the single-species tests, the shrimp ( Neocaridina sp. At the same time, species sensitivity distribution curves were constructed based on the toxicity data of EC 10, EC 50 and NOEC derived from laboratory single-species toxicity tests, which further gives no obvious hazard concentrations for 95% species in the ecosystem (HC 5). The 63 days-NOEC (no observed effect concentration) of 4-TBP for this system was calculated. In order to evaluate the ecological hazard of 4-tert-butylphenol (4-TBP), species abundances and physicochemical properties were monitored for 63 days in a microcosm system containing planktonic algae, rotifers, shrimps and Daphnia.
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