Method, device and system for detecting heavy metals in soil
A detection device and detection method technology, applied in the field of soil detection, can solve the problems of analysis result error, volatile component loss, etc., and achieve the effect of ensuring comprehensiveness, reliability and accuracy
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Embodiment 1
[0053] At present, heavy metal detection methods are basically based on "field sampling-indoor air drying-digestion-chemical analysis". After research, it is found that this laboratory chemical analysis method is not only time-consuming and labor-intensive in sampling, but also easily causes the loss of volatile components, resulting in There are errors in the analysis, and the cost is high and the detection cycle is long. Based on this, such as figure 1 As shown, the embodiment of the present invention provides a soil heavy metal detection method, which is applied to a soil heavy metal detection device, and the soil heavy metal detection device is preset with a spectral standard sample of a soil sample with known heavy metal content and type. The standard sample includes the first characteristic X-ray spectrum of the heavy metal in the soil sample under preset detection conditions, and the first characteristic X-ray spectrum includes a wavelength corresponding to the heavy met...
Embodiment 2
[0068] At present, heavy metal detection methods are basically based on "field sampling-indoor air drying-digestion-chemical analysis". After research, it is found that this laboratory chemical analysis method is not only time-consuming and labor-intensive in sampling, but also easily causes the loss of volatile components, resulting in There are errors in the analysis, and the cost is high and the detection cycle is long.
[0069] Based on this, if image 3As shown, the embodiment of the present invention provides a soil heavy metal detection device, which is used to apply the soil heavy metal detection method, and the soil heavy metal detection device includes: a preset unit 200, which is used to preset soil samples with known heavy metal content and type Spectral standard sample, the spectral standard sample includes the first characteristic X-ray spectrum of the heavy metal in the soil sample under preset detection conditions, and the first characteristic X-ray spectrum in...
Embodiment 3
[0076] At present, heavy metal detection methods are basically based on "field sampling-indoor air drying-digestion-chemical analysis". After research, it is found that this laboratory chemical analysis method is not only time-consuming and labor-intensive in sampling, but also easily causes the loss of volatile components, resulting in There are errors in the analysis, and the cost is high and the detection cycle is long. Based on this, such as Figure 5 As shown, the embodiment of the present invention provides a soil heavy metal detection system, including: an excitation device 300, which is used to emit X-rays to irradiate the soil to be detected, so that the soil to be detected emits second characteristic X-rays; an optical path device 301, used to make the second characteristic X-ray emitted by the soil to be detected enter the cadmium zinc telluride CZT detector 302; the CZT detector 302 is used to convert the second characteristic X-ray into a voltage signal; soil heavy...
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