Handheld heavy metal detector

Abstract

The invention relates to a handheld heavy metal detector. Specifically, the detector comprises an upper cover, a display screen, a circuit board, a micro camera, a battery, a lower shell, a sample holder and a heavy metal detection card. The heavy metal detection card is inserted into the sample holder during use, and two dots in the middle of the heavy metal detection card are immobilized indicators which can react with a solution containing heavy metal ions in color. The miniature camera collects the image of the detection card after color reaction, converts the image into a digital signal, outputs the digital signal to the single-chip microcomputer on the circuit board in parallel through a sixteen-bit bus, obtains a standard detection curve, and inputs an algorithm into the single-chip microcomputer. When a position sample is measured, the single chip microcomputer calculates and processes an extracted digital signal according to a set algorithm, and transmits final results such as heavy metal concentration and the like to a display screen in parallel through another 16-bit bus to be displayed. The detector is simple to use and convenient to carry, can realize multiple purposes, and can help people to quickly and accurately measure the concentration of heavy metal ions.

Description

technical field [0001] The invention relates to the technical field of heavy metal detection, in particular to a hand-held heavy metal detector. Background technique [0002] With the development of social industry, the problem of environmental pollution has become increasingly prominent. In recent years, frequent heavy metal pollution incidents have aroused widespread concern in this field. Heavy metals have the characteristics of high toxicity, strong concealment, complex chemical behavior and ecological effects, and can migrate to water, soil and organisms through various channels, posing a serious threat to the ecological environment and human health. Therefore, timely and effective detection of heavy metals is of great significance. [0003] At present, the commonly used heavy metal detection methods mainly include spectral / mass spectrometry methods such as atomic absorption spectrometry, atomic emission spectrometry, atomic fluorescence spectrometry, inductively coupl...

AI Technical Summary

Problems solved by technology

Although spectrum / mass spectrometry has high detection accuracy, the disadvantages are that the equipment is expensive and bulky, the analysis time is long, and the operation is cumbersome, which obviously cannot meet the needs of on-site rapid detection.

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