Water-body heavy-metal detecting agent

Abstract

The invention relates to the field of heavy metal detection, and discloses a water-body heavy-metal detecting agent. The water-body heavy-metal detecting agent consists of the following components inparts by weight: 30-50 parts of ferroferric oxide nano magnetic particles, 30-50 parts of a polyethylene glycol chitosan graft and 10-25 parts of a dispersing agent, wherein the surface of the ferroferric oxide nano magnetic particles is coated by the polyethylene glycol chitosan graft, and the grafting molar ratio of polyethylene glycol to chitosan is 1:1. The water-body heavy-metal detecting agent provided by the invention has good water solubility, is easy to disperse in a water body, and has strong adsorption capacity on heavy metals; after the gathered heavy metals are relieved, magnetismcan be utilized for recycling and detecting simply, and the residues in the water body are few; the used components have no toxicity or harm and are safe and environmentally friendly, the componentsof the detecting agent have no influence on detection signals, and the detecting agent is a water-body heavy-metal detecting agent suitable for industrial production and application.

Description

technical field [0001] The invention relates to the field of heavy metal detection, in particular to a heavy metal detection agent in water. Background technique [0002] The rapid development of economy and industrial production has caused many pollution problems, especially heavy metal pollution. There have been many reports on the detection of metal ions, such as flame atomic absorption (FAAS), inductively coupled plasma mass spectrometry (ICP-MS), inductively coupled plasma emission spectroscopy (ICP-OES), electrothermal atomic absorption spectroscopy (ETAAS) and other methods. However, there are still many problems in using these detection methods to directly detect water bodies, because mercury, arsenic, selenium, antimony, bismuth and other elements are present in trace amounts in water bodies. It is relatively low, which leads to problems such as the signal-to-noise ratio of the detection signal being too large. Therefore, there is a need for a heavy metal detectio...

AI Technical Summary

Problems solved by technology

However, there are still many problems in using these detection methods to directly detect water bodies, because elements such as mercury, arsenic, selenium, antimony, and bismuth exist in trace amounts in water bodies. Therefore, there is a need for a heavy metal detection agent suitable for water, which can enrich heavy metals in water without affecting the detection signal.