Systematic and long-term technical validity of toxicity determination and early warning of heavy metal pollution based on an automatic water-toxicity-determination-system
Yue Yi, Baoguo Wang, Xuemei Yi, Fan Zha, Haisen Lin, Zhijun Zhou, Yanhong Ge, Hong Liu
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引用次数: 0
Abstract
Water toxicity determination with electrochemically active bacteria (EAB) shows promise for providing early warnings for heavy metal pollution in water. However, thus far, only idealized tests with a few types of heavy metals have been conducted. In this study, an automatic water-toxicity-determination system with high technical maturity was established, and the toxicological properties of common heavy metals were systematically assessed. The results demonstrated that the common heavy metals linearly inhibited EAB currents in the range of 0.1 mg/L to 0.5 mg/L. The toxicity ranking of the tested heavy metals was Pb2+ > Tl3+ > Cu2+ > Cd2+ > Zn2+ > Ni2+ > Hg2+ > As2+. The toxicity interaction mainly exhibited an antagonistic effect in binary heavy metal mixtures. The system can accurately determine surface water toxicity and rapidly monitor heavy metal pollution, with good repeatability and a long lifetime. Overall, this study demonstrates that EAB are capable of long-term (> 60 d) surface water quality monitoring and on-site early warning of heavy metal pollution.
期刊介绍:
Frontiers of Environmental Science & Engineering (FESE) is an international journal for researchers interested in a wide range of environmental disciplines. The journal''s aim is to advance and disseminate knowledge in all main branches of environmental science & engineering. The journal emphasizes papers in developing fields, as well as papers showing the interaction between environmental disciplines and other disciplines.
FESE is a bi-monthly journal. Its peer-reviewed contents consist of a broad blend of reviews, research papers, policy analyses, short communications, and opinions. Nonscheduled “special issue” and "hot topic", including a review article followed by a couple of related research articles, are organized to publish novel contributions and breaking results on all aspects of environmental field.