Abstract：
The levels of three phenolic endocrine-disrupting compounds (EDCs), NP, BPA and 4-t-OP were determined in water and sediment collected from sites along the Xiangjiang River, Zunyi, China. The NP, BPA and 4-t-OP concentrations ranged from 18.02 to 311.79 ng/L in the surface water, 16.04-408.12 ng/L in the submerged water, and 21.13-892.37 μg/kg dw in the sediment. NP contamination was most severe in both the river water and sediment. The ranges of the three phenolic EDCs were slightly greater in the submerged water than in the surface water (p > 0.05). The concentrations in the middle reaches were greater than those in the upstream and downstream reaches in both the water and sediment, and significant differences in content were detected in some reaches. The levels of three phenolic EDCs in the water and sediment had a positive correlation. In addition, the distribution coefficient (Kd) indicated that NP was more likely to adsorb to the sediment, and BPA and 4-t-OP were more likely to adsorb to river water. Moreover, the risk quotient (RQ) and hazard quotients (HQ) were used to reveal the environmental and health risks caused by coexposure to the three phenolic pollutants. The results showed that the current pollution is a threat to the environment of the study area and not a threat to the health of the local population.
摘要：
三种酚类内分泌干扰化合物（EDC）的水平，NP,从湘江沿岸收集的水和沉积物中测定了BPA和4-t-OP，遵义,中国。NP,地表水中BPA和4-t-OP的浓度范围为18.02至311.79ng/L，在淹没水中16.04-408.12ng/L，沉积物中浓度为21.13-892.37μg/kgdw。NP污染在河水和沉积物中均最为严重。淹没水中三种酚类EDC的范围略大于地表水(p>0.05)。中游的水和沉积物浓度均大于上游和下游，并且在某些河段中检测到含量存在显着差异。水体和沉积物中三种酚类EDCs的含量呈正相关。此外,分布系数(Kd)表明NP更容易吸附到沉积物上，BPA和4-t-OP更容易吸附到河水中。此外，风险商(RQ)和危害商(HQ)用于揭示共同暴露于三种酚类污染物引起的环境和健康风险。结果表明，当前的污染是对研究区环境的威胁，而不是对当地人口健康的威胁。
