He Sinan, Dong Deming, Sun Chang, Zhang Xun, Zhang Liwen, Hua Xiuyi, Guo Zhiyong
Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun 130012, China.
Changchun Customs District P.R. China, the former Jilin Entry - Exit Inspection and Quarantine Bureau, Changchun 130062, China.
Sci Total Environ. 2019 Jun 20;670:576-584. doi: 10.1016/j.scitotenv.2019.03.256. Epub 2019 Mar 19.
Pharmaceuticals, personal care products, and environment estrogens, as contaminants of emerging concern (CECs), have been widely detected in aquatic environments around the world. However, surveys of seasonal freeze-thaw rivers with special hydrological features are limited. To address this, in this study the occurrence, distribution, ecological risk, and mass flux of 22 CECs in the Jilin Songhua River in northeast China, a famously seasonal freeze-thaw river at mid- and high-latitude regions, were investigated during its spring flood period. The results indicate that estriol had a maximum concentration of 27.4 ng·L in the mainstream river water. Doxycycline had a maximum concentration of 204.4 ng·L in the tributary river water and 103.0 ng·L in the riverine wastewater treatment plant (WWTP) effluents. The mean concentrations of the targeted CECs in the spring flood were 1.4 times higher than those found in our previous investigation during the summer flood. A risk assessment showed that estrone posed a high risk in the mainstream, doxycycline posed a high risk in the tributaries, and ofloxacin posed a high risk in the riverine WWTP effluents. In addition, erythromycin and lincomycin posed a medium to high risk in the river water and WWTP effluents. The major contribution of the CECs in the mainstream came from its tributaries, which contributed a total of >50% in the spring flood period. The results suggest that some appropriate measures should be taken to reduce the contribution of the CECs from the tributaries to the seasonal freeze-thaw river in its spring flood period.
药品、个人护理产品和环境雌激素作为新出现的关注污染物（CECs），已在世界各地的水生环境中被广泛检测到。然而，对具有特殊水文特征的季节性冻融河流的调查却很有限。为了解决这一问题，本研究对中国东北的吉林松花江（一条位于中高纬度地区著名的季节性冻融河流）在春季洪水期22种CECs的存在情况、分布、生态风险和质量通量进行了调查。结果表明，雌三醇在主流河水中的最高浓度为27.4 ng·L。强力霉素在支流河水中的最高浓度为204.4 ng·L，在河流污水处理厂（WWTP）的出水中为103.0 ng·L。春季洪水期目标CECs的平均浓度比我们之前在夏季洪水期调查中发现的浓度高1.4倍。风险评估表明，雌酮在主流中构成高风险，强力霉素在支流中构成高风险，氧氟沙星在河流污水处理厂出水中构成高风险。此外，红霉素和林可霉素在河水和污水处理厂出水中构成中到高风险。主流中CECs的主要贡献来自其支流，在春季洪水期支流的总贡献率>50%。结果表明，应采取一些适当措施来减少支流中CECs在春季洪水期对季节性冻融河流的贡献。
