Water body toxicity detecting method and portable device based on microbial electrochemical signals

Abstract

The invention provides a water body toxicity detecting method and portable device based on microbial electrochemical signals. The method and the device are characterized in that a microbial fuel cell (MFC) technology is combined with an integrated circuit technology. The device comprises an MFC signal generator and a signal acquisition and alarm circuit. Anode materials of the MFC signal generator are subjected to electrochemical modification, and subjected to inoculation by using electricity-producing pure bacteria, so that the start-up time is shortened, and the signal stability of a baseline is enhanced. The signal acquisition and alarm circuit comprises an SCM (single chip microcomputer) minimum system, a power supply module, a liquid crystal display module and a sound-light alarm system. When a water body contains toxic substances, an output signal of the MFC signal generator deviates from the baseline, and when a deviation value exceeds a design threshold of the alarm circuit, the sound-light alarm system on the circuit is started to send the alarm. The device disclose by the invention is stable in signal, simple in design, strong in portability, and applicable to various water quality detection occasions.

Description

technical field [0001] The invention belongs to the technical field of water quality detection, and in particular relates to a portable water toxicity detection device and a water toxicity detection method based on microbial electrochemical signals. Background technique [0002] At present, serious water pollution has caused great damage to the ecological environment, and the control of water pollution is related to the survival and development of human beings. One of the key links in water pollution control is whether the water quality can be evaluated correctly and objectively, so as to provide scientific basis for the relevant departments to manage and control water pollution. However, the current detection of water quality indicators mainly relies on large-scale analytical equipment in the laboratory. These equipment are large in size, time-consuming in detection, consume a large amount of chemical reagents in the analysis and detection, and are expensive, which is e...

AI Technical Summary

Problems solved by technology

[0004] Traditional water quality toxicity detection methods include algal toxicity detection, fish toxicity detection, flea toxicity detection, and protozoan toxicity detection. The growth cycle of these organisms has great restrictions on water quality detection, and the actual operation is difficult.

New methods for water quality biological toxicity testing mainly focus on microbial toxicity testing, the typical representative is luminescent bacterial toxicity testing, but this requires expensive light detection devices and professional experimental operations

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