Method for carrying out in-situ sampling and detection on available metal based on DGT-XRF combined technology
A combined technology, effective state technology, used in material analysis, measurement devices, surface/boundary effects, etc. using wave/particle radiation, which can solve the reduction of portable XRF measurement accuracy, trace element accuracy requirements, and easy contamination of XRF probes, etc. problems, to achieve the effect of rapid measurement, short time consumption, wide environmental range and low cost
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Embodiment 1
[0038] Based on DGT-XRF combined technology, the in situ sampling and detection method of effective metal metals is used to monitor the on-site monitoring of river pollution water bodies that occur in black and odorous, which includes the following steps:
[0039] S1. Preparation of DGT devices: This device has improved compared with the standard DGT device. It is not compared with the diffusion film. It consists of two layers of membranes of Zro-Chelex fixed membrane and PVDF filter membrane, which shorten the target element absorbed by the fixed membrane absorption The path, the fluorescent signal that enhances XRF analysis without affecting the DGT determination;
[0040]S2. Preparation of indoor standard sample film: Establish a standard curve of multiple heavy metal elements. Put the DGT device of the above steps S1 into the mixed solution of a variety of metal solutions of different concentration gradients for enrichment. Under the same concentration, one of the DGTs can be ...
Embodiment 2
[0050] Based on DGT-XRF combined technology, the in situ sampling and detection method of effective metal metal is used to monitor the in situ of the soil in situ in place of the contaminated venue.
[0051] S1. Preparation of DGT devices: This device has improved compared with the standard DGT device. It is not compared with the diffusion film. It consists of two layers of membranes of Zro-Chelex fixed membrane and PVDF filter membrane, which shorten the target element absorbed by the fixed membrane absorption The path, the fluorescent signal that enhances XRF analysis without affecting the DGT determination;
[0052] S2. Preparation of indoor standard sample film: Establish a standard curve of multiple heavy metal elements. Put the DGT device of the above steps S1 into the mixed solution of a variety of metal solutions of different concentration gradients for enrichment. Under the same concentration, one of the DGTs can be determined by XRF to obtain the fluorescent signal value...
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