GB/T 3253.1-2001 Chemical analysis method for antimony - Determination of arsenic content

This standard specifies the determination method of arsenic content in antimony. This standard is applicable to the determination of arsenic content in antimony. Determination range: 0.005% to 0.50%. GB/T 3253.1-2001 Chemical analysis method for antimony Determination of arsenic content GB/T3253.1-2001 Standard download decompression password: www.bzxz.net

KS 77.123.60 National Standard of the People's Republic of China GB/T 3253.7 ~-3253.6 2001 Methods for chemical analysis of antimony 2001- 07 -10 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Issued on 2001- 12 -01 1 Scope National Standard of the People's Republic of China Methods for chemical analysis of ammonia-Determinatien or arscnic runtent This standard specifies the methods for determination of antimony content in certain substances. Determination range: 0.005 ~ 30%, 7-way delivery summary
GBT 3253.-- 2001
The sample is dissolved in acid and in a relatively small amount of hydrochloric acid. Take a single benzene and make it react with water to form a pentavalent species. Then add the acid chain to generate a phase monitor. Measure the absorbance at 5 wavelength. Collect the test solution and determine the content of 1 test solution. Determine the test time
3-1 sparse or (1. 2/ml,),
3. 2 blood bag (ol. Is g/ml.).
3.3 sparse (1+2℃
3.4 ​​salt age 1311>,
3.5 succinic acid-1).
3. Sodium hydroxide solution (3). Store in a plastic bottle. 3.9 Standard sodium hydroxide solution (5g). Weigh 0.5g sodium hydroxide solution and dissolve 1g in 20mL water. Add 10L water to a 10-litre glass bottle.
3.10 Acid contact solution (.59/ Weigh .5% sodium hydroxide solution, KH2O, 4% HCl, 2% MgSO4, 4% MgSO4 ... . Dissolve 5/10 of the solution in the solution, add 1 ml of water, add 1 ml of water, transfer to the UL bottle, dilute with water until it becomes sticky. In this case, 3.14 standard drops: 20 ml of standard drops 10 ml of standard drops, mix well with water: this agent is not used
China Railway Medical Quality Supervision, Inspection and Control Bureau of the People's Republic of China 2001-07-0 Approved 2001-2-01 Purchase
4 Make-up instrument
Spectrophotometer.
5 Analysis steps
5.1 Test sample
Weigh according to the table and weigh to 0.1 ml.
Mass fraction of Kun.
25.25~7.230
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All test methods are carried out in accordance with the regulations. Take the total average
5.2 Blank test
Test with the sample:
5.3 Determination
CT3253-1—2001
Sample*·E
Take the sample volume m.1.
5.3.1 Weigh the sample (15m.) in a 1/4 dimensional bottle. 1. Add sulfuric acid (3.2), place on a stove, keep the dust down and dissolve the test liquid at a temperature close to the bottom until it is clear. Remove the radiator, add 20 mL of water, and cool to room temperature. 3.2 Add 20 L of acid (3.2), add 5 mL of salt water, and wash the volumetric bottle with salt water (3.2) several times. Wash the volumetric bottle with salt water several times and lighten the volumetric bottle until mixed. 5.3.3 Take the test solution and divide it into 125 mL of water. 4, acid %. 2) dilute 3m to 30m apples, take 1n, let it stand for stratification.
5.3.4 Add the water phase to the second batch of 13xT. The first fraction is more than ten, and the last two mm are taken and allowed to stand for stratification: discard. 5.3-5 Transfer the uncontaminated layer into the first separating funnel, use 3.1 drops of concentrated salt to precipitate, vibrate for 30 minutes, let it stand for stratification, and then remove the water: 3.> Rinse with 5% salt solution and allow to separate into layers. Transfer 1.536 small sterile bacteria water into a V-shaped volumetric flask, add 15m water and shake for 35 minutes to separate the layers. Combine the aqueous phases in a volumetric flask: add 1 drop of modified elastic solution, add 1 drop of hydrogen to neutralize part of the oxygen in the molten steel, add 0.1-L of isosulfur dioxide (3.3) until the liquid shows a red color, mix. 5.3.9 Take a portion of the test solution in 3m absorbance and measure the true absorbance at 100°C using the single drop of the sample as reference. Use the two as the reference line. 5.4T action line will be used as the reference line. 5.4.1 will take 0.1.G9.2.00), 3.00.1. 60.5006.(nl. standard rate roll gastric in a group 30m.T. material to add 30L water, standard. The following amine 5..7~3..8 of the implementation of 57.2 part of the liquid into 3m absorbent blood. 2 Measure the reference. In the photometric: wavelength s5nmr. Measure the absorbance, with blood as the core coordinate and the vertical coordinate as the vertical coordinate. The following mountain range 6 Expression of analysis results
This formula calculates the mass fraction of the clock:
Where: A
Allowable error
GB/T 3253. 1
w(As)=
's more effective amount,
my - V. X Ju-6
Working load on the God of the inspection:
Total volume of the whole body,
The amount of test solution collected is:
The mass of the sample B. The difference between the laboratory and the test area should not exceed the allowable difference listed in the table. Table
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