This standard specifies the determination method of cadmium content in zinc concentrate. This standard is applicable to the determination of cadmium content in zinc concentrate. Determination range: 0.10% to 2.00%. GB/T 8151.8-2000 Chemical analysis method for zinc concentrate Determination of cadmium content GB/T8151.8-2000 Standard download decompression password: www.bzxz.net

ics 73. ceC
National Standard of the People's Republic of China
GH/TB151.8-2000
Methods far chemical analysis of zinc concentratesDelerminalion of cadmiumtortent2000-02-16 Released
2000-08-01 Implementation
National Mongolian Quality and Technical Supervision Bureau Released
GB/T8:51.8—2000
、Determination of the amount of pot by atomic absorption spectrometry This standard is a revision of (3TR151.1S87) full mineral chemical section, only the contraction group modification is made
This standard:
3 Standardization Part 2 Guidance, Unit 1: Standardization Table Construction Rules Part 1: Standard Abbreviations GR/T:.1-993
This standard is prohibited
Extension of the standard: Guidance for Chemical Analysis GB/T -.4-983
CH4S?-18 General provisions of the standard for chemical analysis of common metallurgical products GB/T7723·1987: General rules for chemical analysis of metallurgical products by pyrolysis and absorption method G11/T17133-1398 Chemical analysis of metallurgical products from the date of implementation of this standard, SA B/151.8-1!8, Appendix A of this standard is a summary of the following:
The standard is proposed by the manufacturer of the nonferrous metal industry, and the standard is under the jurisdiction of the National Nonferrous Metals Industry Standardization Institute. This standard is for zinc concentrates produced in small quantities, and the main contributors are: Su Yu, Zhang Tiezhen, San Zuo:
1 Standard application
National Standard of the People's Republic of China
Methnds for chemical analysis of zinc concentrates
Determination of zinc content
Ziae concentrates-lebeimiinatinooEcadmiumcontent This standard specifies the determination method of the sales volume of chemical ore. This standard applies to the determination of the 4-radiation base content of isocyanate. Fan Huoliang: 0.10%--2.00% added. 2 Method Summary
GB/T8151.8-2000
Code # GB:T 8LEL. 6. 1C7
The sample is dissolved in a hydrochloric acid medium with a pad of carbon aldehyde, and roasted with a gas-acetylene fire at 328.8m1 of the original hand-held magnetic absorption spectrometer, with the absorbance of the solution.
3 Reagents bZxz.net
3. 1 Hydrochloric acid t01. 19 p/:
3.2 Elimination of electricity (1.+2kmL)
3.3 (1+1
3.4 ​​Reserve standard storage liquid: weigh 1.2200 tantalum (9%, %) in 250mL glass, add 20mL energy (1-1), add water, heat to complete, completely remove the original oxidation, cool to room temperature, transfer to 1000Tm1, volume, add water to the glass until it is diluted, and mix well. This liquid contains 1r:1.3.5 standard storage liquid, take 2r.l. standard storage liquid (7,1) in 1G0mT. volumetric bottle, add 10mL salt solution (3.3), mix with water to reduce the content.
4 Instrument
Use absorption spectrometer, with hollow plate lamp. Under standard instrument conditions, any absorption spectrum that can reach the following standards can be used to measure the absorption spectrum. In a liquid consistent with the sample volume, the characteristic change of silver should not be much.1?mL. Precision: Use the most liquid standard to measure the absorbance 11 times, and the standard gain should not exceed 1.51% of its average absorbance. Use the lowest concentration of the standard solution (not including the "zero" standard solution) to measure the absorbance of 11 times, and the cup should not reach the average absorbance of the high concentration standard solution. The working curve is linear; the working curve is divided into working sections by the linear curve, and the absorbance value of the high section can be taken into account with the absorbance value of the low section. Only the second instrument is modified Appendix A (suggestive appendix). Water Conservancy and Hydropower Administration approved on February 16, 2000 2000-C8-01 implementation 5 Test specimens 5.1 The sample should pass through a sieve with a pore size of 1.1 ccmm CB/T8151.8-2000 5.2 The sample should be pre-sieved at 10℃ L: 1. Place in a medium and cool to room temperature. E. Analytical procedure: Weigh the reagents according to Table 1 and extract to 1 μl. The extract in Table 1 contains 0.10-0.05 μg/ml. x
Independently carry out two measurements and take the average value. E.2 White test
Then the sample is subjected to the research test:
6.3 Determination
and the whole acid
Test color in general
5.3.1 Place the sample (6,1) in a 200mL beaker and add 15L of acid (3.3. Low temperature boiling 1) 1, 5mL. nitric acid, evaporate to nearly 30°C, remove and cool, table! Requirement plan (!) Dissolve the station, remove and cool to room temperature. Transfer the obtained table 1 to the cellar bottle, dilute with water until it is separated, and evenly disperse. Ten parts of the solution, 6.3.2 At the atomic absorption spectrum, only 2.8mm is reduced, adjust the burner concentration: use air acetone Measure the absorbance of the liquid after the fire is quiet, adjust the season with water, and measure the absorbance of the liquid. Subtract the absorbance of the blank spectrum of the same sample from the measured absorbance. Find the corresponding new concentration from the working curve: 6.4 Preparation of working curve
6.4.7: Take 01.092.92.3.00, 4.00.5.00ml of the standard solution and add 10mL of the standard solution (3.3) from a 100L volume of each group, dilute with water to 40°C, and mix well. 5.4.2 Measure the absorbance of the standard solution under the same conditions as the test sample, take the relative pressure as the micro coordinate, and take the absorbance (minus the "zero" concentration absorbance ratio) as the driving coordinate to give the working curve. The main description of the analysis result
Calculate the percentage of the reserve according to formula (1):
. -V. X10-6
In the formula, - working residual concentration / IV - total volume of liquid, rr1.1
- mass of the sample.
The results provided shall be expressed to two decimal places.
8Tolerance
The actual value of the integrated inter-laboratory analysis station result shall not be greater than the allowable difference listed in Table 21
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-0. 3C.~9, 5c
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GB/T 8151.8—2CC0
GB/T 3151.8—200c
Attached tea A
(two notes for reminder)
According to the working conditions of the instrument
Use the following X-1C atomic absorption spectrometer to quantify the working conditions as shown in Table A
Monochromator
Combustion liquid
Z.
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