On-line enrichment atomic absorption spectroscopic analysis method and device for heavy metal elements

Abstract

The invention provides an online enrichment atomic absorption spectroscopic analysis method for heavy metal elements, which is characterized in that it includes the following steps: (a) online mixing of seawater samples and acidic solutions, and the acidic environment of the obtained mixed solution can realize the enrichment of heavy metals in seawater samples set; (b) the mixed solution flows through the enrichment soft column, and the heavy metals in the mixed solution are adsorbed in the adsorption material arranged in the enrichment soft column; (c) the enrichment is rinsed with eluent Soft column, wash out the mixed solution remaining in the enrichment soft column; (d) use the eluent to elute the heavy metals adsorbed in the enrichment soft column; (e) elute the elution obtained in step (d) The resulting solution was subjected to element detection and analysis. The invention also discloses the device of the method. The invention effectively solves the background interference problem of salt in seawater, solves the cumbersome manual pretreatment process and time-consuming problems at the same time, and realizes automatic and rapid analysis of trace heavy metal elements in seawater.

Description

Technical field: [0001] The invention belongs to the field of element detection, in particular to an automatic detection method and device for trace heavy metal elements in seawater. Background technique: [0002] At present, the problem of marine environmental pollution has attracted more and more attention, and the effective monitoring of heavy metal pollution elements in seawater has become an important issue that the marine environment must face. The elements that cause heavy metal pollution in seawater mainly include: mercury, lead, cadmium, copper, zinc, nickel, selenium, arsenic, chromium, etc. Pollution sources include both natural sources and man-made sources, mainly including: industrial sewage, mine wastewater discharge and pesticide pollution. Pesticide pollution is also one of the important sources of coastal heavy metal pollution. Pesticides containing heavy metals such as mercury and copper are highly toxic. They are washed by rainwater, transported by river...

AI Technical Summary

Problems solved by technology

Compared with the ordinary atomic absorption spectroscopic analysis method of heavy metal elements, the present invention uses the combination of sequential flow injection online enrichment technology and atomic absorption spectroscopic detection device to conduct online mixing treatment of seawater samples and online desalination of salt in seawater , On-line enrichment of trace heavy metal elements in seawater, effectively solve the background interference problem of salt in seawater through online desalination, effectively solve the test of trace heavy metal elements in seawater through online enrichment, and solve the cumbersome artificial Pretreatment process and time-consuming issues, to achieve automatic and rapid analysis of trace heavy metal elements in seawater

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