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Soil and Sediment Wavelength Dispersive X-ray Fluorescence Spectrometry (2)

 Last Update: 2022-02-28
 Source: Internet
 Author: User

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(6) Sample storage and preparation

The collection and preservation of soil samples shall be implemented in accordance with HJ/T166, and the collection and preservation of sediment samples shall be implemented in accordance with GB17378.

Use boric acid or high-density low-pressure polyethylene powder as the bottom, border or plastic ring border, and press about 5g of the sieved sample on a tablet press to form a sheet with a thickness of not less than 7mm

(7) Analysis steps

Refer to the instrument operating procedures to establish the measurement method

According to the same operation steps as the sample preparation, at least 20 standard samples with different mass fraction elements are pressed into thin sheets.

Table 5-56 Range of calibration curve for determination of elements

Note: The unit of element content is mg/kg; the unit of oxide mass fraction is %

The sample to be tested is measured under the same conditions as the establishment of the calibration curve, and the X-ray fluorescence intensity is recorded

Related Links: Wavelength Dispersive X-ray Fluorescence Spectrometry of Soil and Sediment (1)

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