Quantitative Analysis of Cement by EDX-8000 (SRM 1880b, 1881a, 1884b, 1886a, 1887b, 1888b, 1889a)

• Sample Preparation

Pressure forming was conducted using a vinyl chloride ring (inner diameter 35 mmф ), with a total pressure of 250 kN for 60 seconds. A photograph of the sample is shown in Fig. 1.

Fig. 1 Pressure-Formed Briquette of Cement

• Calibration Curves

The calibration curve and accuracy (1σ) for each element are shown in Fig. 2.

Fig. 2 Calibration Curves and Accuracy

• Lower Limits of Detection (L.L.D.)

The lower limits of detection calculated using the above calibration curves are shown in Table 2.

Table 2 Lower Limits of Detection (300 sec, 100 sec only for Fe2O3

[mass%]

• Repeatability

Using the above calibration curve method, the repeatability test results for SRM 1880b shown in Table 3 were obtained by simply conducting 10 repeat measurements. The X-ray fluorescence spectra for each measurement element of each sample are shown in Fig. 3.

Fig. 3 X-Ray Fluorescence Spectra of Measured Elements

Table 3 Repeatability for SRM 1880b (300 sec, 100 sec only for Fe2O3)

[mass%]

Source: ETA