GB/T 8151.7-2000 Chemical analysis methods for zinc concentrates - Determination of arsenic content

This standard specifies the determination method of arsenic content in zinc concentrate. This standard is applicable to the determination of arsenic content in zinc concentrate. Determination range: 0.0050% to 0.80%. GB/T 8151.7-2000 Chemical analysis method for zinc concentrate Determination of arsenic content GB/T8151.7-2000 Standard download decompression password: www.bzxz.net

1S 73.060
National Standard of the People's Republic of China
GB/T81517-—2000Www.bzxZ.net
Chemical analysis method of zinc concentrate
Determination of arsenic content
Methods for chemical nalysis of zint: toncentrales-Ielerminalinn ofarsenieeontent2000-02-16 Release
2000-08-01 implementation
Kitchen Quality and Technical Supervision Bureau release
GR/T8151./-2U00
wood standard adopts two chemical analysis methods to determine the transfer point of zinc pat agent, method 1\hydrogenation purchase three-Beijing Yu Chengguang no promise method is the code quantity "for the missing method: case! Atomic flame spectrometer recently simplified wood some and, there is a method? Following the original method "Northern science analysis method wave suppression method determination", recommend "hydride emission-original fluorescence harmonic method defined release" as the inspection method: this standard invites you to follow
G ratio T1.11 special 3 standardization T work guide unit 1, standard starting car and table operation rules Part 1: standard summary H this standard summary
G1.-1988 standardization work chemical analysis standard writing GT117-1978 Standard for Chemical Analysis of Metallurgical Products GBT17433-198 Basic Chemical Analysis of Metallurgical Products This standard shall be effective from the date of implementation B/811.7-…93. Appendix A of this standard is a reminder appendix. This standard is proposed by the State Bureau of Nonferrous Metals Industry: This standard is submitted by the National Bureau of Nonferrous Metals Industry and the Institute of Metrology and Quality of Nonferrous Metals Industry. This standard is mainly produced by Zinc Factory and Beijing Mining Research Institute. 1 Main drafters: Ji Heyan, Yu Nanfang 2 Main drafters: Xu Dujian, Hong Zhiwei 1 Scope National Standard of the People's Republic of China Chemical Analysis Method for Zinc Concentrate Determination of Arsenic Content Mstlouls 1. Determination of zinc cancenta'ates by hydride generation-atomic fluorescence spectrometry This standard specifies the method for the determination of zinc content in zinc ore. This standard is applicable to the determination of zinc content in zinc ore. The standard is: 0.0050%--5.80% 2. Method 1. Determination of zinc cancenta'ates by hydride generation-atomic fluorescence spectrometry This standard specifies the method for the determination of zinc content in zinc ore. This standard applies to the determination of zinc content in zinc ore. The standard is: 0.0050%--5.80% 2. Method 2. The test method is to eliminate the impurities such as zinc, iron and silver in the pre-reduced ore with ascorbic acid. The impurities such as zinc, iron and silver are reduced to ions by potassium hydride in a hydride generator. The ions are introduced into a quartz crystal ion analyzer with a gaseous discharge, and the fluorescence intensity is measured by an electron fluorescence spectrometer.
3 Reagents
3.1 Potassium hydroxide,
3.2 Cetrimonium hydroxide 1.13 g/mL1
3.3 Magnetic aldehyde 1,42 g/ml.)
sulfuric acid +,
3.5 sulfuric acid 14),
3.6 acid + s),
3.7 potassium hydrogen hydride (100%/L).
3.8 ascorbic acid solution <5J--502/[.1, when prepared, weigh 1C.Cg borohydride in 500mL hydroxide solution (5g/), when the ratio is made, weigh 0.132Cg of dioxide (preheated at 1CEC±5℃ for 1h, cooled in a small drying container) in a 330ml. beaker, add 25ml. potassium oxychloride 3.? ), heat to decompose, add 1 mL of 3.4), use sulfuric acid (3.5) to reduce to 00, solution 100,
3.11 standard wave: transfer the standard solution 31C) to a 503-ml volumetric flask + add 75 ml of hydrochloric acid (3.2) to the scale, and reduce 1 mL of this [伊4 instrument
atomic carbon light light double, when the god special high-intensity hollow cathode lamp. Standard instrument and working conditions, any fluorescence spectrum that can meet the following indicators can be used: National Quality and Technical Supervisor 2000-02-1E batch increase 2000-08-01 implementation
light limit, not more than! /
GB/T 8151.7—2000
Love honey change: long high according to the island standard tour must light plan thinking must zero "liquid freezing light number theory! High range standard temperature wave fee light intensity three values ​​of the coefficient of variation is greater than 5.0 and 1. Xinxing. Under the level of linear, the work letter slowly according to the makeup degree of the beauty of the section service section of the light intensity of the difference and the minimum setting light period of the difference value ratio should be less than 0.30
Instrument benefit working conditions we place time record A (hint appendix) 5 sample
5.1 The sample should be sieved through n, 100nim several. 5.2 The sample is pre-dried at 10+5 for 15, and the coal needs to be cooled to room temperature. 6 analysis step
3.1 sample
control table 1 weigh the material, and the viscosity is correct to 0.CCL1 H. Table
u.005~0.050
2G.C5C.-0. 2G
2-L, 20 ~. Eu
20.50 ~0.80
Sample quantity
0: :00
Test case
Run the test in reverse
on the spot, take the average
6.2 Blank test
Carry out the blank test with the tile
6. 3 Determination of the volume of synovial fluid 3.1 Place the sample (6.1) in a 3m. medicine cup, add the necessary amount of water to moisten it, add 10mL of nitric acid, heat at low temperature to dissolve it, cool it down, add a small amount of potassium hydroxide, heat until the acid is concentrated, collect it, cool it down, add 20mL of (3,5). After the cold part is dissolved by heat, press 1 Transfer to the sealed bottle, use the sample to the mark, 6.3.2 Take 1 ml of the test solution, add hydrochloric acid (3.2) to determine the volume of the solution, dilute the ascorbic acid solution with water, and dilute to the mark, 30 min
6.3.3 On the fluorescence spectrometer, use the acid (3.6) as the carrier and the potassium hydride solution as the reducing agent, measure the change of the light intensity with the air of the sample, and obtain the corresponding extension from the curve. 6.4 Preparation of working oil line
6.4.1. Take 0, 1.00, 2.00, 6.00, 8.33, 20.00 ml of the special standard sample and put it into a 100L volumetric bottle, add 0.0m salt film (3.2) and 0.0m ascorbic acid solution, dilute to the mark, and dilute to the mark, 30 min
6.3.3 On the fluorescence spectrometer, use the acid (3.6) as the carrier and the potassium hydride solution as the reducing agent, measure the change of the light intensity with the air of the sample, and obtain the corresponding extension from the curve. 6.4 Preparation of working oil line
6.4.1. Take 0, 1.00, 2.00, 6.00, 8.33, 20.00 ml of the special standard sample and put it into a 100L volumetric bottle, add 0.0m salt film (3.2) and 0.0m ascorbic acid solution, and dilute to the mark, 30 min
6.4.2. 6.4.2 In the case of fluorescence measurement with the test sample, use salt (3.6) as carrier, chemical inhibitor as reagent, formula as reference, and measure the fluorescence of the standard solution as test substance. With the limit quality of the tooth for the standard, the fluorescence singing degree is the standard. Give the system work line, 7 expression of analysis results
According to the formula (!) calculate the content of the tooth:
GB/T 3151.7-2C03
In the test, --- the concentration obtained from the action, am: one test micrometer volume m:
V, --- the test volume, ml
hot plated body science.mI..
effective amount of the material A.
The obtained result is expressed to two decimal places: if the content is less than 1.1C, it is expressed to one decimal place: less than 0.010. It is expressed to one decimal place.
8 Allowable difference
The actual value of the inter-laboratory analysis result should not be greater than the allowable difference listed in Table 2: Table 2
. X5 0.~0.25
3.920~0.1c
2-0._0.-c.35
D.3U--c.45
0.Gy.~&.E
9 Range
Method 2 Determination of arsenic content by potassium titration
This standard stipulates [Determination of arsenic content in zinc concentrate: wooden standard push or used for determination of arsenic content in the front grid expansion. Determination range 0,1 center is ~2.00 Xing, 10 method proposed
The sample was dissolved with nitric acid and potassium hyaluronate. In a 1+1 solution of sodium hyaluronate, with fluidized bed molten as catalyst, pentavalent potassium sulfide was used as monovalent potassium sulfide: the three sets of chemical products were separated by distillation and separated by saturated light, trichloroacetic acid and water were collected, and the sodium hyaluronate was used as indicator. The standard filtrate was titrated to measure the amount of 11 reagents
11.1 HCl.
11. 2 Sulfuric acid.
11. 3 Potassium hyaluronate.
11.4 1.19 g/L).
t1. 5 HCl (1+1).
11.6 Methyl hyaluronate (1+1).
11.7 Methyl hyaluronate indicator-- - × 1cc
The volume of the standard titration solution of potassium iodide is mL; the volume of the standard titration solution of potassium iodide is mL: the mass of the test sample 8,
The difference between the results of the two tests should not be greater than the allowable difference listed in Table 4: Table 4: 3. 1K. ~u. 5u
-4. 52 ~), 0
*-1. c--2.0!
GR/T $151.7--2000
(Appendix of prompts)
Working conditions of the positioner
Use AFS-22U1 series original flame retardant instrument to measure the working conditions A1, A3, A1
Lamp current
Air flow
Instrument working conditions
Atomic North Cliff
Atomic North Carbon West Skin
Yan Impact Pump Working Spring Number
Positive High Times
Delayed Return to the World
My Column Time
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