GB/T 7602.2-2008Determination of T501 oxidation inhibitor content in transformer oil or turbine oil - Part 2: Liquid chromatography (English PDF)
变压器油、汽轮机油中T501抗氧化剂含量测定法 第2部分：液相色谱法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 30, 2008
Implementation date
October 1, 2009
Scope
GB/T 7602.2-2008 is the English-translated version of 变压器油、汽轮机油中T501抗氧化剂含量测定法 第2部分：液相色谱法.
GB/T 7602.2-2008 is the Chinese standard "Determination of T501 oxidation inhibitor content in transformer oil or turbine oil - Part 2: Liquid chromatography". Its scope clause reads: This section provides transformer oil, turbine oil added T501 antioxidant (2,6-di-tert-butyl-p-cresol) content measured by liquid chromatography Setting Method.
This section applies to transformer oil, turbine oil antioxidant content measured T501, T501 Determination of the content of other oil may also be Referring to the process carried out. Its clauses include method summary; equipment.
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Document preview — GB/T 7602.2-2008
National Standard of the People's Republic of China
- ICS
- 75.100
- Classification
- E 38
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Method Summary
- 4 Equipment
1 Scope
This section provides transformer oil, turbine oil added T501 antioxidant (2,6-di-tert-butyl-p-cresol) content measured by liquid chromatography
Setting Method.
This section applies to transformer oil, turbine oil antioxidant content measured T501, T501 Determination of the content of other oil may also be
Referring to the process carried out.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 7597 Power oil (transformer oil, turbine oil) sampling method
GB/T 17623 insulating oil dissolved gas components by Gas Chromatography
3 Method Summary
The method of using methanol as extractant enriched oil T501, the analysis is dissolved in the extract of T501 content by high performance liquid chromatography,
In order to achieve oil quantitative determination of T501.
The lower detection limit of this method is 0.005%.
4 Equipment
4.1
HPLC should meet the following conditions.
a) a single pump or double-pump system;
b) C18 HPLC column, column length 150mm;
c) capable of detecting ultraviolet (UV) spectrum UV detector;
d) data acquisition system should be used chromatography data workstation or chromatographic data processor;
e) ultrasonic generator or line degasser for removing air bubbles in the mobile phase.
4.2 mechanical oscillator
reciprocating oscillation frequency of 270 times/min ~ 280 times/min, the amplitude of 35mm; can GB/T 17623 method of removal
Air shaker with.
4.3 high-speed centrifuge laboratory use
0r/min ~ 4000r/min.
4.4 Analytical balance
accuracy of 0.0001g.
4.9
stirrer.
......
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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Related Standards
GB/T 7602.1-2008 — Determination of T501 oxidation inhibitor content in transformer oil or turbine oil - Part 1: Spectrophotometric method
GB/T 7602.3-2008 — Determination of T501 oxidation inhibitor content in transformer oil or turbine oil - Part 3: Infrared spectroscopy method
GB/T 7602.4-2017 — Quantitative determination of T501 oxidation inhibitor content in transformer oil or turbine oil -- Part 4: GC/MS method
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GB/T 7602.2-2008
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