GB/T 6324.9-2016Test method of organic chemical products - Part 9: Determination of chloride (English PDF)
有机化工产品试验方法 第9部分：氯的测定
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 30, 2016
Implementation date
July 1, 2017
Scope
GB/T 6324.9-2016 is the English-translated version of 有机化工产品试验方法 第9部分：氯的测定.
GB/T 6324.9-2016 is the Chinese standard "Test method of organic chemical products - Part 9: Determination of chloride". Its scope clause reads: GB/T 6324 provisions of this part of the organic chemical products Determination of chlorine oxidation combustion - microcoulometry and turbidimetric method.
This section provides oxidation combustion - microcoulomb method for the determination of chlorine content in liquid organic chemical products. Detection range is 0.5mg/L ~ 50.0mg/L. This method does not apply to sulfur, nitrogen content greater than 0.1% (mass fraction) of the sample.
If brominated in the sample Material, iodide and inorganic chloride, will make the determination of high. This section provides the visual turbidity method for the determination of free chlorine ions in liquid and solid organic chemical products.
Detection range is 0.0003% to 0.02% (3 mg/kg to.200 mg/kg). Its clauses include oxidative combustion - microcoulometry.
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Document preview — GB/T 6324.9-2016
National Standard of the People's Republic of China
- ICS
- 71.080.01
- Classification
- G 15
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Oxidative combustion - microcoulometry
- 3.1 method principle
- 3.2 Instruments
1 Scope
GB/T 6324 provisions of this part of the organic chemical products Determination of chlorine oxidation combustion - microcoulometry and turbidimetric method.
This section provides oxidation combustion - microcoulomb method for the determination of chlorine content in liquid organic chemical products. Detection range is
0.5mg/L ~ 50.0mg/L. This method does not apply to sulfur, nitrogen content greater than 0.1% (mass fraction) of the sample. If brominated in the sample
Material, iodide and inorganic chloride, will make the determination of high.
This section provides the visual turbidity method for the determination of free chlorine ions in liquid and solid organic chemical products. Detection range is
0.0003% to 0.02% (3 mg/kg to.200 mg/kg).
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 602 chemical reagent impurity standard solution preparation
GB/T 603 chemical reagent test methods used in the preparation of preparations and products
GB/T 3723 Industrial Chemical Sampling Safety General
GB/T 6680 General rules for sampling liquid chemical products
GB/T 6682 analytical laboratory water specifications and test methods
GB/T 8170 rounded repair rules and limit values of the representation and judgment
3 Oxidative combustion - microcoulometry
Caution - Some procedures specified in the test methods may result in hazardous conditions and the operator should take appropriate safety and protective measures.
3.1 method principle
The liquid sample is injected into the combustion tube, mixed with oxygen and burned, the sample of chlorine into hydrogen chloride, and the carrier gas into the titration cell, and electricity
The silver ions in the solution react (Ag Cl - -> AgCl ->), and the consumed silver ions are replenished by the electrodes through electrolysis. According to the required electricity
Amount, according to Faraday's law of electrolysis calculate the chlorine content of the sample.
3.2 Instruments
3.2.1 microcoulomb instrument
3.2.1.1
Microcouloumeter Any microcouplers capable of meeting the minimum detectable concentration <=0.5 mg/L as required by this standard may be used. Measurement
Volume Reference - Measures the potential difference of the electrode pair and compares this potential difference with the bias voltage to amplify this difference to the electrolysis electrode pair producing current, microcoulomb
The output voltage signal is proportional to the electrolytic current.
3.2.1.2
heating furnace with 1 ~ 3 temperature control section.
3.2.1.3 combustion tube
Quartz made of its structure to meet the sample carrier gas carried to the combustion zone, and under aerobic combustion conditions. Burning tube […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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