National Technical Committee on Oil Drill Engineering Standardization
Issued on:
2006-5-12
Implemented on:
2006-11-1
Status:
valid
Language:
English
File Format:
PDF
Word Count:
3500 words
Price(USD):
100.0
Delivery:
via email in 1 business day
1 Scope
1.1 This standard specifies the determination of trace organic chloride in aromatic hydrocarbons for industrial use by microcoulometry.
This standard is applicable to samples with organic chlorine concentrations from 0.5 mg/kg to 25 mg/kg in aromatic hydrocarbons for industrial use.
This standard is not applicable to samples with sulfur and nitrogen concentrations greater than 0.1% (m/m). Presence of bromide, iodide and inorganic chloride in the sample will make the determination results biased high.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and ensure compliance with relevant national regulatory provisions.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding any corrigendum), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the latest editions of the standards indicated below. For any undated references, the latest edition of the document referred to applies.
GB/T 3723 Sampling of chemical products for industrial use—Safety in sampling
GB/T 6680 General rules for sampling liquid chemical products
GB/T 6682 Water for analytical laboratory use—Specification and test methods
GB/T 8170 Rules for rounding off of numerical values
3 Summary of method
A sample is injected into a combustion tube where it is mixed with oxygen and burns. Oxidative pyrolysis converts the organic chlorine in the sample to hydrogen chloride that then, by the carrier gas, is brought into a titration cell where it reacts with the silver ions present in the electrolyte (Ag++Cl-→AgCl↓). The silver ion thus consumed is coulometrically replaced by electrolysis and the total electrical work to replace it is used to calculate the organic chloride concentration in accordance with the Faraday's laws of electrolysis.
Foreword i
1 Scope
2 Normative references
3 Summary of method
4 Reagents and materials
5 Apparatus
6 Sampling
7 Preparations
8 Test procedure
9 Expression of analysis results
10 Precision
11 Report
Annex A (Informative)
SH/T 1757-2006 Aromatic hydrocarbons for industrial use-Determination of organic chloride-Microcoulometric method (English Version)
Standard No.
SH/T 1757-2006
Status
valid
Language
English
File Format
PDF
Word Count
3500 words
Price(USD)
100.0
Implemented on
2006-11-1
Delivery
via email in 1 business day
Detail of SH/T 1757-2006
Standard No.
SH/T 1757-2006
English Name
Aromatic hydrocarbons for industrial use-Determination of organic chloride-Microcoulometric method
Chinese Name
工业芳烃中有机氯的测定 微库仑法
Chinese Classification
G16
Professional Classification
SH
ICS Classification
Issued by
National Technical Committee on Oil Drill Engineering Standardization
Issued on
2006-5-12
Implemented on
2006-11-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
Language
English
File Format
PDF
Word Count
3500 words
Price(USD)
100.0
Keywords
SH/T 1757-2006, SH 1757-2006, SHT 1757-2006, SH/T1757-2006, SH/T 1757, SH/T1757, SH1757-2006, SH 1757, SH1757, SHT1757-2006, SHT 1757, SHT1757
Introduction of SH/T 1757-2006
1 Scope
1.1 This standard specifies the determination of trace organic chloride in aromatic hydrocarbons for industrial use by microcoulometry.
This standard is applicable to samples with organic chlorine concentrations from 0.5 mg/kg to 25 mg/kg in aromatic hydrocarbons for industrial use.
This standard is not applicable to samples with sulfur and nitrogen concentrations greater than 0.1% (m/m). Presence of bromide, iodide and inorganic chloride in the sample will make the determination results biased high.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and ensure compliance with relevant national regulatory provisions.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding any corrigendum), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the latest editions of the standards indicated below. For any undated references, the latest edition of the document referred to applies.
GB/T 3723 Sampling of chemical products for industrial use—Safety in sampling
GB/T 6680 General rules for sampling liquid chemical products
GB/T 6682 Water for analytical laboratory use—Specification and test methods
GB/T 8170 Rules for rounding off of numerical values
3 Summary of method
A sample is injected into a combustion tube where it is mixed with oxygen and burns. Oxidative pyrolysis converts the organic chlorine in the sample to hydrogen chloride that then, by the carrier gas, is brought into a titration cell where it reacts with the silver ions present in the electrolyte (Ag++Cl-→AgCl↓). The silver ion thus consumed is coulometrically replaced by electrolysis and the total electrical work to replace it is used to calculate the organic chloride concentration in accordance with the Faraday's laws of electrolysis.
Contents of SH/T 1757-2006
Foreword i
1 Scope
2 Normative references
3 Summary of method
4 Reagents and materials
5 Apparatus
6 Sampling
7 Preparations
8 Test procedure
9 Expression of analysis results
10 Precision
11 Report
Annex A (Informative)