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目的研究长江中游(荆江段)航道沿线取水口、排污口水中污染物的毒性效应,分析其在航道工程水源地水质监测中的作用。方法 2015年2月以荆江航道工程沿线取水口水源水和排污口排污水为分析对象,采用鼠伤寒沙门氏菌回复突变试验(Amestest)检测水中污染物潜在致癌性;采用重组基因酵母细胞检测水中环境类雌激素活性。结果荆江航道沿线取水口、排污口水中污染物TA98、TA100突变率均较低,且两者比较差异无统计学意义(P>0.05);取水口水中可检出环境雌激素活性,但明显低于排污口(P<0.05)。结论长江中游(荆江段)航道沿线取水口水源水已具有潜在的环境雌激素活性,需重点监测,密切关注施工期水源地水质变化,避免施工加重污染。
Aim To study the toxic effects of pollutants in water intake and outfall at the middle reaches of the Yangtze River (Jingjiang section), and to analyze its role in water quality monitoring of waterway engineering waterway. Methods In February 2015, the intake and outlet effluent from the intake of Jingjiang waterway project were taken as the analysis object. Amestest was used to detect the potential carcinogenicity of water pollutants. Salmonella typhimurium Estrogen activity. Results The mutation rates of TA98 and TA100 in water intakes along the Jingjiang waterway were all low, and there was no significant difference between them (P> 0.05). The environmental estrogenic activities were detectable in water intakes, but were significantly lower At the sewage outfall (P <0.05). Conclusions The intake water along the waterway of the middle reaches of the Yangtze River (Jingjiang section) has potential environmental estrogenic activity. It is necessary to focus on monitoring and pay close attention to the water quality changes during the construction period to avoid aggravating the construction pollution.