Oxygen molecular flow as an indicator of physiological stress in the embryos of blackhead fish: a real-time water quality biological monitoring system

The safety of the freshwater ecosystem is very important for human beings, so it is necessary to monitor the content of harmful chemicals and biological agents in the freshwater environment in real time. Recently, scientists at Purdue University in the United States have established a system for real-time monitoring of water quality using non-damaging micro-measurement technology.

This research report is published in the journal Environmental Science and Technology. Non-damage detection methods can find a variety of contaminants, such as the herbicide atrazine, and its detection sensitivity is very effective. , Can even be detected below the US Environmental Protection Agency (EPA) standards. The study under five different modes (including atrazine, cadmium chloride, pentachlorophenol, malathion, and potassium cyanide) real-time effects on the respiratory oxygen consumption of embryos of blackhead mullet two days after fertilization To evaluate the sensitivity of instantaneous changes in oxygen consumption when the embryos of blackhead fish are at low concentrations of pollutants. After two hours of treatment, pentachlorophenol, cadmium chloride, and atrazine resulted in increased oxygen consumption, while potassium cyanide and atrazine caused reduced oxygen consumption. Malathion treatment had no significant effect.

The head of the study, Marshall Portfield, said that this technology can be used in other organic organisms. If embryo fish are used in combination with tumor cells, it can detect potential carcinogenic drugs or help discover new therapeutic targets. This research theory proposed by Purdue University has great advantages, it records the respiration of sensitive life stages. This research is very gratifying, it can become a potential application tool to protect human health. The study uses non-damaging micro-measurement technology to monitor the presence of environmental toxicants, providing new ideas and methods for water quality monitoring.

Keywords: Non-damaging micro-measurement technology (NMT), environmental monitoring, oxygen (Oxygen flux), water quality
References: Sanchez BC, et al. Environ. Sci. Technol, 2008, 42, 7010-7017

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