GB/T 8151.12-2000 Chemical analysis methods for zinc concentrates - Determination of silver content

This standard specifies the determination method of silver content in zinc concentrate. This standard is applicable to the determination of silver content in zinc concentrate. Determination range: 20～1000g/t. GB/T 8151.12-2000 Chemical analysis method for zinc concentrate Determination of silver content GB/T8151.12-2000 Standard download decompression password: www.bzxz.net

ICS /3.060
National Standard of the People's Republic of China
GB/18151.12-2000
Methods to chemical analysis of zinc concentrate
Determination of silver content
Methods to chemical analysis of zinc concentrate concentrate setermtnattanofsilvercontent
2000-02-16Release
Bacterial agglutination quality technology blue supervision
2000-08-01Implementation
GRT8151.12—2000
This standard is based on B8151.12-130 Method for determination of sodium ion by atomic absorption spectrophotometry and is edited by the new editor.
This standard is:
G Ratio 1.1193 Standard Specification Unit 1, Standard Specification and Expression, etc. Part 1, Standard Operation Certificate Wrongly written this regulation
1. 4-19 Standardization work guide chemical analysis is the standard written as the method standard 3/T14-178 General principles for chemical analysis methods of metallurgical products and a general standard 17717 General rules for chemical analysis of metallurgical products by fire atomic energy spectroscopy CB17-8 Technical points of chemical analysis report of metallurgical products This standard shall be implemented from the date of implementation. Appendix A of GT1.12-189 standard is the supplementary requirement for slow display.
This international standard is proposed by the user, the city nonferrous metal industry bureau, this international standard is the state-owned nonferrous metal industry standard Sichuan quality wind research institute, the annual standard is the full production of zinc production, the rich crown grass
This standard is the outlet of the mountain mine, Beijing mining research institute, Hu Lu Pan needle! This standard is used for the determination of the content of silver in zinc concentrate. Specification: 2--1000R/2 Method Summary G/T 2151, 12-2000 1x15, 1P-198g The sample is padded with acid and dissolved in sieved salt solution. The absorbance of silver is measured on an absorption spectrometer for 2h.1n in an air-ethylene atmosphere. www.bzxz.net
3 Reagents
3.1 Salt drum (.1.19%/L), high purity. 3.2 Nitrate (e1.12pm.1. high purity
3.3 Yield (1:).
3.4 ​​Elimination 1+1).
3.5 Silver balls are stored in liquid, take more than 55000 silver D.%> in a 1cm beaker, add 2u [3.4) can effectively heat and decompose the oxide: grams can be driven out. Remove the cooled to room temperature and transfer to 1, through the measurement group, add 2m. The solution is relatively stable (3.4) and does not contain oxygen ions. The rate of the band is soft. According to the uniform. This box liquid contains 1ml. 0.5mF ​​silver 3.6 silver marked step solution: transfer 10.00mE silver standard piece and store it in a 100mL positive bottle. Add 100mL grinding solution (3.4), dilute with water without ions to make it change, mix, this solution contains 1ml of instrument
atomic force spectrometer, with a very hollow pole lamp, the working conditions of the instrument, etc. Any atom that can meet the following indicators and has no absorption light can be used. Sensitivity: The concentration of the sample in the liquid matrix is ​​equivalent to that of the sample. Precision: Use the highest concentration standard solution (not the "fast" standard solution) to measure the absorbance once, and its standard deviation should not exceed 1.51% of the average absorbance of the highest concentration standard solution.
Working curve linearity: Divide the working curve into segments with equal concentrations, and the ratio of the absorbance difference of the highest setting to the absorbance difference of the lowest setting should not be less than C.7.
Instrument working conditions Appendix A (indicative list) National Quality and Technical Supervision Bureau 2000-02-16 approved 2CC0-38-01 test
5. Samples are weighed over 0.100m
GR/T8151.12-2CCC
52 The sample is pre-irradiated at 105=5 off and placed in a small cooling burner. 6 Analysis steps
6.1 Samples
Weigh the sample according to Table 1, accurate to, CC.C1H.Test-R
26 -50
53--201
Perform a single test and take the average value. 6.2 Chamber test: Follow the test with the reduction test and do a vacuum test. 6.3 Determination: Add ml of water to determine the effective time. 6.3.1 Wet the sample (.) ml. in a cup with a small amount of water, add 5~1mL of acid (3.1) at a rate of 5~20mL, heat to decompose, add 5~1mL of active acid (3.2! Continue heating until nearly ten minutes, add 83% of the blood and some other substances according to Table 1), if the solution is hot, remove it, cool it in a car and keep it cool. Use rice water to lightly divide the temperature, standard. 6.3.2 Bake the filtered part of the pool at 200 °C in air-drying mode, and add only 200 g/min of the original absorber (minus the amount of light consumption at 50 g/minus the amount of light consumed by the lamp), and adjust the absorbance by adjusting the amount of absorbance, and subtract the absorbance of the sample with the air self-penetrating wave, and then make a line to obtain the old silver.
6.4 Working line drawing
6.4.1 Transfer (0, 1..2, 3.1, 4.005, r. Silver band standard filtrate: the rate is 00m1 volumetric bottle. 20n:1. Zhang Meng (3.3), dilute with water to the scale, and mix well. Stone.4.2 Under the same conditions as the test, measure or standard The photometric value of the liquid. Take the silver concentration as the coordinate, and the absorbance (minus the "zero" absorbance of the liquid) is the standard, and the working line 7 Expression of the analysis results
method (1>1 Calculate the silver content:
Ae(/t):
The silver concentration of the drug is obtained from the working curve /TrL: In the formula
1.. The total source.n.-
The mass of the test sample.
The result is expressed to the integer.
8 The difference between the analysis stations of the laboratories should not be greater than the residual difference in Table 3. -Vu
2: - 5
:-- [5
3r-3~.Ann
-3 oc0
GBT151.12—2000
GE/TE151.12—2000
Not applicable)
Use the working condition table A1 of the instrument
Use the WFX>-Ⅱ double beam atomic absorption spectrometer to measure the working condition table A1 of the instrument. Table AI
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