This standard specifies the determination method of iron content in antimony. This standard is applicable to the determination of iron content in antimony. Determination range: 0.0050% to 0.30%. GB/T 3253.2-2001 Chemical analysis method for antimony Determination of iron content GB/T3253.2-2001 Standard download decompression password: www.bzxz.net

ICs77.120.EC
National Standard of the People's Republic of China
GB/T3253.1-~3253.62001
Methods for chemical analysis of antimony2001-07-10 Implementation
Shandong People's Government and 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 antimony-Determining the content of iron
Methodg far chemical μnalysis of antimuny-Determinatron uf irun runtentThis standard specifies the method for determining the titanium content in stainless steel. This standard is applicable to the determination of titanium content in weak steel. The range of determination is: ±51~n.0,? Method summary
/3253.2—20
代梦G1T3253.2-.82
The test materials and properties are as follows: potassium sodium ions are added into the acetic acid solution to reduce the divalent cation to a complex with divalent and non-trivalent cations. The absorbance is measured at a wavelength of 51° on a spectrophotometer. The test sample contains 2.3g lead, 1g potassium, 1m copper, 0.05g trivalent ion and 3.1g/ml of trialuminum.
3.2 Night (01, 4:4/ml)
3.3 Hydrogen (. 9gm).
3.1 Trihydronaphthalene (351)
3.5 Hydroxylamine solution (10/1.): Weigh 1Gn of sodium hydroxylamine solution and place in a 1GG0ml beaker, add 5mT hydrolysis. Adjust with water, add 2% potassium permanganate (20g/ml), add 10ml. Add 410m of trioxygen in a dropping funnel in batches, and take out: when the organic layer is white, discard it as the organic layer, transfer the aqueous phase to a separate bottle and dilute with water until mixed. 3.5 tartaric acid, 2g of tartaric acid, K·41 high filter, 3l. Float for a while, add 20 ml of tartaric acid, squeeze out 2-naphthene, cool to room temperature: add 20 ml of tartaric acid, add 1000 ml of tartaric acid, shake and extract three times (1 ml each time), discard the organic layer. Transfer the aqueous phase to a glass bottle with 1/10 water and reduce it to ml. Dip a spoon into 3.7 sodium acetate 2/1.1 weigh anhydrous membrane pin and place it in a 23xT cup, add 500 ml of water, 2 ml of pyrochlore, remove and cool to room temperature for 2 min: add 1 ml of tartaric acid (2g/) [00Cm Use a funnel to separate the organic layer (1m3/s) from the water. Add the organic layer to the water phase and add water to the test tube until it is clear. 3.8 standard line: weigh (99% of the total volume) and dissolve in 1 cup of water. Heat until clear. Remove the nitrogen and oxygen from the mixture and cool it down. Transfer it to a container and dissolve it with water until the concentration is reached. This commercial solution contains 0 iron || tt || 3.9 iron. The standard solution is 3.00ml. Dissolve it in 1cu(ml of the standard solution and dissolve it with water until the concentration is reached. This policy is approved by the State Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on July 10, 2001 -12-01 Implementation
1 ml. Contains 1U iron.
Strict photometer
5 analysis steps
Gn/T3253.2—2QC1
According to the table (joint test bomb, accurate base.「,
missing mass isocratic differential.%
13, :X:5 n--f, f1>
26 G18--. 060
26.c--.3n
Shi Wendi meter full change determination, share total balance, 5.2 prison death test cooling
follow the same test material short side test,
5.3 determination
method science people
take the test solution, 1.
5.3.1 put the reagent (5.11) in a 1Ul beaker. Add 4 11ml nitric acid: heat to dissolve until clear, and continue for about : Remove the oxidizing agent, such as 1 ml of oil stone solution, cool to room temperature, transfer to 3 ml, and then adjust to the maximum temperature. 5.3.2 Method Table 1 Pipette the test solution [mL. Add 1:1 sodium acetate, do not dilute with water to 0mL, add 25I sodium acetate, and proceed as described in 5.3.3. 5.3.3 Add 2 [mL light rubber, 2 [mL] sodium acetate, and 1 [mL] sodium acetate. Insoluble in water, put in cold water until the whole fish is cooked, mix.
5.3.4 Transfer part of the test rate. 3.3) + 3cm absorption. Take the blank test liquid with the material and measure the absorption at wavelength n of the spectrophotometer. Find the iron from the work line. 5.41 Standard line preparation
5.2.1 Transfer..302.003.031.00.5.39 6.00 blood iron standard drop into a 50mL volumetric bottle and dissolve it with water to 2,2 or 1+15% gelatin. Transfer part of the solution back into the absorbed blood (5.3.4.1) with an instrument and use the reagent blank as a reference. Measure its absorbance ratio with a spectrophotometer: 1mr. The absorbance is the value of the working line analysis result. Calculate the positive fraction of the drug. The total volume of the test sample is 1.5 mL; the mass fraction of the material is 100 μl.
Allowable differencebZxz.net
GB/T 3253.2
The difference between the laboratory analysis is smaller than the allowable difference listed in Table 2.
n. nne nn. nts
no3-n.uss
>). 033 - 1l. n6l
No evaluation
. ar1 5
nt fing
Absent total effect
>n. nca~. 13n
n. nn~.n. sf.
n. 2nn~n.sm
I allow
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