Method for measuring heavy metal content of oyster based on hyperspectral image technology
A hyperspectral image and measurement method technology, applied in the field of oyster heavy metal content determination, can solve the problems of complex operation and long detection time, and achieve the effect of simple and fast operation and good test reproducibility
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Embodiment 1
[0057] Such as figure 1 As shown, the method for determining heavy metal content in oysters based on hyperspectral image technology includes the following steps:
[0058] S1: Preparation of heavy metal contaminated samples;
[0059] S2: collect the hyperspectral image of each heavy metal contaminated sample through the hyperspectral image acquisition system;
[0060] S3: extract and preprocess spectral data according to the hyperspectral image;
[0061] S4: A band selection algorithm based on neighborhood information entropy, and obtain a subset of heavy metal ion sensitive characteristic bands according to spectral data;
[0062] S5: Construct a heavy metal ion content determination model based on extreme learning machine according to the heavy metal ion sensitive characteristic band subset;
[0063] S6: Input the hyperspectral data of the oyster sample to be tested into the heavy metal ion content determination model, and output the determination of the heavy metal conten...
Embodiment 2
[0099] More specifically, on the basis of Example 1, the oyster sample was adapted to the experimental conditions for about 10 days in a plastic pool with a length of 60 cm, a width of 40 cm, and a height of 30 cm, and the seawater used in the experiment was processed through 24 hours of settlement and soil filtration. It is used to keep oysters living in the tank. The pH value of the seawater is 8.05±0.1, the temperature is 20.8±2.6°C, the dissolved oxygen content is greater than 6mg / L, and the salinity is 21‰.
[0100] For the study of single heavy metal pollution in oysters, oyster samples were divided into five groups, and oyster samples in groups I, II, III, and IV were exposed to high concentrations of CdCl in water, respectively. 2 , PbCH 3 COO·3H 2 O, ZnSO 4 ·7H 2 O, CuSO 4 ·5H 2 Among the four reagents, group V (no pollution control) was cultured in seawater without adding any heavy metal elements. For the research on oyster complex heavy metal pollution, the oy...
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