A methylophilic bacterium capable of on-line monitoring of heavy metals and its application

Abstract

The invention discloses a methylophilic bacterium that can realize online monitoring of heavy metals and its application. The methylophilic bacterium is a strictly aerobic bacterium selected from the mouth of the Wandering River in Yantai, Shandong Province. Its aerobic respiration and oxygen consumption to Pb 2+ and Hg 2+ These two heavy metal ions respond sensitively, Pb 2+ and Hg 2+ It can strongly inhibit the respiration of the strain, and the preservation number of the strain is CGMCC No.13058. The benefits of the present invention are: the bacterial strain aerobic respiration and oxygen consumption have a significant effect on Pb 2+ and Hg 2+ The response of these two heavy metal ions is sensitive, and by monitoring the change of oxygen consumption rate, the concentration of Pb in drinking water, fresh surface water and seawater can be realized. 2+ , Hg 2+ Rapid response and early warning of heavy metal ions, fast response and simple operation; (2) The strain can be automatically cultivated without the need for a large amount of freeze-dried powder of bacteria, and the cost is lower; (3) The strain can be used in real-time heavy metal monitoring and online The research and development of early warning technology and instruments have great application prospects.

Description

technical field [0001] The invention relates to a methylophilic bacterium and its application, in particular to a methylophilic bacterium capable of realizing heavy metal on-line monitoring and its application, belonging to the technical field of microorganisms. Background technique [0002] In more than a century after the second industrial revolution, human industrial and agricultural production capacity has increased rapidly, and human living standards have been greatly improved. At the same time, there are serious environmental pollution problems. Among them, heavy metal pollution It has always been the focus of pollutants in water pollution. [0003] For nearly a century, human heavy metal poisoning incidents caused by eating fish, shrimp, crab shells enriched in heavy metals have been common. The earliest report was a cadmium poisoning incident (bone pain disease) caused by mine wastewater pollution in Japan in the 1930s . Similar incidents followed. In the 1950s, so...

AI Technical Summary

Problems solved by technology

Among them, microorganisms, as indicator organisms, have many advantages such as low culture cost, short reproduction cycle, instant response and sensitivity. However, most of the microorganisms currently used for heavy metal toxicity monitoring are luminescent bacteria. Bacteria cannot be monitored online, freeze-dried powder needs to be prepared, and long-term strain recovery is required, which has certain limitations in environmental heavy metal and toxicity monitoring

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