Apparatus and method for automatically detecting water body heavy metal by algae-enrichment-X-ray fluorescence spectrum

Abstract

The invention discloses an apparatus and method for automatically detecting the water body heavy metal by the algae-enrichment-X-ray fluorescence spectrum. With the green alga in the fresh water microalgae having the excellent absorption performance to the heavy metal ad the stripe type filter membrane as the carrying carrier of the frustule and heavy metal, heavy metal absorption by the alga, uniform thin test sample forming based on alga-heavy metal enrichment, filter paper strip transmission, heavy metal thin test sample drying, XRF spectral measurement and program analysis are carried outto realize simultaneous, rapid, continuous, automatic online detection of the heavy metal. The apparatus and method have characteristics of simple operation, chemical reagent prevention, secondary pollution avoidance, good economical and environment-friendly effects, low operation and maintenance cost, high degree of automation and the like; and the stability and sensitivity of water body heavy metal detection by the XRF spectroscopy are substantially improved. With the liquid flow precise control and continuous suction filtration modes, multi-times continuous and repeated sample preparation of the same to-be-analyzed water sample can be realized; and the accuracy of the water body heavy metal detection by the XRF spectroscopy can be enhanced well.

Description

technical field [0001] The invention relates to the technical field of detection of environmental heavy metal pollutants, in particular to an automatic detection device and method for heavy metals in water by algae enrichment-X-ray fluorescence spectroscopy. Background technique [0002] In recent years, with the rapid development of my country's industry, the problem of heavy metal pollution in water has become very prominent, and heavy metal pollution incidents such as "excessive blood lead", "excessive cadmium", and "bone pain disease" have frequently broken out in many places. Due to their non-degradability, bioaccumulation, and significant biotoxicity, heavy metals can cause cancer, disease, and mutagenesis. Once accumulated in organisms, they will pose a serious threat to human health and the ecological environment, and cause major damage to the national economy. loss. Therefore, rapid, real-time, online and automatic detection of heavy metals in water is of great pra...

AI Technical Summary

Problems solved by technology

Using the green algae in freshwater microalgae as the adsorption material to simultaneously enrich various heavy metal elements in the water body, using the strip filter membrane as the carrier of algae cells and heavy metals, and making the same water body sample by precise control of liquid flow and continuous suction filtration Multiple identical thin samples with uniform distribution of heavy metals are used for XRF spectrum measurement and analysis, and the automatic transmission of heavy metal thin samples from the enrichment area to the heating area and from the heating area to the XRF spectrum measurement area is realized by paper tape transmission, realizing the A variety of heavy metal XRF spectra can be quickly, continuously and automatically detected at the same time, solving the problems of poor stability and low sensitivity in the direct detection of heavy metals in water by XRF spectroscopy

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