Mi Yazhu, Tao Xiangyun, Zhang Xu, Si Youbin
Anhui Province Key Laboratory of FarmLand Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China.
R Soc Open Sci. 2019 Jan 23;6(1):181769. doi: 10.1098/rsos.181769. eCollection 2019 Jan.
As a simple and feasible method for acute biotoxicity assessment, personal glucose meter (PGM) can be successfully applied in the early warning of environmental pollutants in sewage. In this paper, the acute biotoxicity of single and joint heavy metals in sewage and real sludge samples was systematically described based on the glucose metabolism of (). Results indicated that the biotoxicity order of five single heavy metals in sewage was Hg > As > Cu > Zn > Cd. The joint heavy metals of Cu + Zn, Cu + Cd, and Cu + Hg produced synergistic effects, while Cu + As and Cd + Zn possessed antagonistic effects for the combined biotoxicity. In spiked sludge, Cd and Zn owned higher biotoxicity than Cu and As. Notably, the electroplate factory and housing estate sludge respectively showed the highest and lowest inhibition rates as 57.4% and 17.7% under the real sludge biotoxicity assessment. These results demonstrated that PGM was a sensitive and portable method, which could be widely used for acute biotoxicity assessment of heavy metals in sewage sludge.
作为一种简单可行的急性生物毒性评估方法，便携式血糖仪（PGM）可成功应用于污水中环境污染物的预警。本文基于（）的葡萄糖代谢，系统描述了污水和实际污泥样品中单一及联合重金属的急性生物毒性。结果表明，污水中五种单一重金属的生物毒性顺序为Hg＞As＞Cu＞Zn＞Cd。Cu + Zn、Cu + Cd和Cu + Hg的联合重金属产生协同效应，而Cu + As和Cd + Zn对联合生物毒性具有拮抗作用。在加标污泥中，Cd和Zn的生物毒性高于Cu和As。值得注意的是，在实际污泥生物毒性评估中，电镀厂污泥和住宅小区污泥的抑制率分别最高和最低，为57.4%和17.7%。这些结果表明，PGM是一种灵敏且便携的方法，可广泛用于污水污泥中重金属的急性生物毒性评估。
