GB/T 8704.10-2020Ferrovanadium—Determination of silicon, manganese, phosphorus, aluminum, copper, chromium, nickel and titanium contents— Inductively coupled plasma atomic emission spectrometric method (English PDF)

1 Scope

This part of GB/T 8704 specifies the determination of silicon, manganese, phosphorus, aluminum, copper, chromium, nickel, titanium by inductively coupled plasma emission spectrometry content.

This section applies to the determination of silicon, manganese, phosphorus, aluminum, copper, chromium, nickel, and titanium in ferrovanadium. For the determination range of each element, see Table 1.

Table 1 Determination range of each element

Determination of element content range (mass fraction)/% Determination of element content range (mass fraction)/%

Silicon 0.10~5.00 Copper 0.010~0.20

Manganese 0.010~1.20 Chromium 0.010~1.20

Phosphorus 0.010~0.20 Nickel 0.010~0.40

Aluminum 0.10~5.00 Titanium 0.010~1.00

2 Normative references

The following documents are essential for the application of this document. For dated reference documents, only the dated version applies to this article

Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.

Selection and preparation of GB/T 4010 samples for chemical analysis of ferroalloys

GB/T 6379.1 Accuracy of measurement methods and results (correctness and precision) Part 1.General rules and definitions

GB/T 6379.2 Accuracy of measurement methods and results (correctness and precision) Part 2.Determination of repetition of standard measurement methods

Basic methods of sex and reproducibility

GB/T 6682 Analysis of laboratory water specifications and test methods

GB/T 8170 Numerical Rounding Rules and Representation and Judgment of Limit Values

GB/T 12806 Laboratory glass instrument single mark volumetric flask

GB/T 12807 Laboratory glass instrument graduation pipette

GB/T 12808 Laboratory glass instrument single mark pipette

3 Principle

The sample was dissolved with nitric acid-hydrochloric acid at low temperature, and the residue was melted with sodium carbonate-boric acid mixed flux and leached with hydrochloric acid. Test solution via inductively coupled plasma

The body emission spectrometer atomization sampling system introduces the test solution into the plasma, and the elements to be measured in the sample solution are evaporated and decomposed under the action of high temperature.

Separated, atomized, and excited to emit their respective characteristic spectra, after the dispersion of the spectroscopic system, the signal intensity of its characteristic spectral line is detected to correspond to the calibration […]