Six-in-one test paper for quickly detecting heavy metal residues

Abstract

The invention relates to quick, sensitive and convenient six-in-one test paper for quickly detecting heavy metal residues. The test paper comprises six heavy metal indicators of mercury, cadmium, plumbum, copper, chromium and nickel, and belongs to the field of monitoring of food, the environment and water quality. The test paper comprises two parts namely a paper base and color rendering paper, and is simple in structure and easy to operate; chromatographic filter paper with the thickness of 3 mm is adopted as a carrier, so that the test paper can quickly detect the contents of the six heavy metals, namely, mercury, cadmium, plumbum, copper, chromium and nickel, in food, the environment and water quality within 1-3 min; an accurate quantitive detection conclusion can be obtained depending on visual observation, so that no expensive device is used for displaying the conclusion, and a user can master the operation without specialized training; moreover, the test paper is cheap, low in production cost and single-use, needs no inspection and maintenance, is high in accuracy, good in repeatability, and very suitable for on-site real-time and quick detection and monitoring.

Description

technical field [0001] The invention relates to a fast, sensitive and convenient 6-in-1 test paper for rapid detection of heavy metal residues, including six heavy metal indicators of mercury, cadmium, lead, copper, chromium and nickel, belonging to the field of food and environmental water quality monitoring. Background technique [0002] Heavy metals refer to metals with a density greater than 4.5 in the periodic table of elements. There are 45 types in total. The most common heavy metals are copper, lead, zinc, tin, nickel, cobalt, antimony, mercury, cadmium, and bismuth. Heavy metal pollution refers to the phenomenon of damage to people or the environment due to excessive heavy metals. Heavy metal pollution has a long history in other countries. For example, Minamata disease caused by heavy metal mercury occurred in Minamata Bay, Japan in 1956. From 1955 to 1972, several cases of bone pain caused by cadmium occurred in Fuji Prefecture, Japan. With the development of my ...

AI Technical Summary

Problems solved by technology

It not only overcomes the limitation of complex sample processing and high cost of instrument analysis, but also provides a fast, sensitive and easy-to-operate analysis method, which is widely used in the rapid detection of heavy metals

At present, patent 200510013377.1 has announced the test paper, preparation method and application of rapid detection of heavy metal mercury, patent 201210028922.4 has announced a kind of qualitative and semi-quantitative lead detection test paper and its application, and patent 201020288154.2 has announced a kind of rapid detection test paper of copper ion, but these The test paper can only detect a certain indicator, and it is impossible to detect multiple indicators on a sample when used alone

There is also a patent 201020521531.2 which discloses a detection card for detecting various heavy metals, but the detection card belongs to colloidal gold immunochromatographic sensor, which requires the preparation of highly specific monoclonal antibodies, and also involves sample pads, gold standard pads, detection pads and absorption Pad optimization and assembly, not only complicated steps, but also high cost

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