Ecological risk assessment of polycyclic aromatic hydrocarbons in surface water from Tianjin
Ecological risk assessment of polycyclic aromatic hydrocarbons in surface water from Tianjin
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发表时间：
2004
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通讯作者：
T. Shu
中科院分区：
文献类型：
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作者：
T. Shu
Based on the observed concentrations of 46 surface water samples from Tianjin and LC50 values of a number of aquatic organisms, probabilistic risk approach was applied to address ecological risk of 8 PAHs to local aquatic ecosystem. Both joint probability curve and overlapping area of concentration and toxicity distribution were calculated for this purpose. The results indicated that the ecological risk of the individual PAHs was small with anthracene being the most toxic compound. The joint probability risk of the 8 PAHs was calculated based on the sum of equivalent concentrations derived from calculated equivalence factors and compared with conventional approach of hazard quotient. The joint risk was much higher than that of the individual compounds. The calculated risk was slightly influenced by the type of doseresponse relationships.
