GB/T 42430-2023Examination methods for ethanol, methanol, n-propanol, acetone, isopropanol and n-butanol in blood and urine (English PDF)
血液、尿液中乙醇、甲醇、正丙醇、丙酮、异丙醇和正丁醇检验
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
August 6, 2023
Implementation date
March 1, 2024
Scope
GB/T 42430-2023 is the English-translated version of 血液、尿液中乙醇、甲醇、正丙醇、丙酮、异丙醇和正丁醇检验.
GB/T 42430-2023 is the Chinese national test method for ethanol, methanol, n-propanol, acetone, isopropanol and n-butanol in blood and urine, by headspace gas chromatography and headspace gas chromatography-mass spectrometry.
It gives the principle - identification from retention times on two columns of different polarity, quantification from peak area with an internal or external standard, and confirmation from characteristic mass fragment ions - and the reagents: grade three water to GB/T 6682, reference substances for the six analytes plus tert-butanol of purity not less than 99.5%, 10.0 mg/mL stock solutions held at 0 °C-4 °C for six months, and a 5.0 mg/mL tert-butanol internal standard stock.
Clause 1 adds that other body fluids and non-biological samples may be examined by reference to it. Issued on 6 August 2023, it has applied since 1 March 2024.
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Document preview — GB/T 42430-2023
National Standard of the People's Republic of China
- ICS
- 07.140
- Classification
- A 92
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative reference documents
- 3 Terms and definitions
- 4 Principles
- 5 Reagents, instruments and materials
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.
1 Scope
This document describes the use of headspace gas chromatography (HS/GC) and headspace gas chromatography-mass spectrometry (HS/GC-MS) for the detection of Methods for ethanol, methanol, n-propanol, acetone, isopropanol and n-butanol.
This document is applicable to the qualitative analysis of ethanol, methanol, n-propanol, acetone, isopropanol and n-butanol in blood and urine by headspace gas chromatography-mass spectrometry.
Analysis and headspace gas chromatography qualitative and quantitative analysis. Other body fluids and non-biological samples can be used as reference.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GA/T 122 Toxicological analysis terminology
3 Terms and definitions
The terms and definitions defined in GA/T 122 apply to this document.
4 Principles
According to the volatile characteristics of ethanol and other six compounds, headspace gas chromatography (HS/ GC) detection, qualitative based on the retention time of two chromatographic columns with different properties, quantitative based on the peak area, internal standard method or external standard method. or Headspace gas chromatography-mass spectrometry (HS/GC-MS) was used for detection, and identification was carried out based on retention time and mass spectrum characteristic fragment ions.
5 Reagents, instruments and materials
5.1 Reagents
5.1.1 Water, conforms to level three specified in GB/T 6682
Store at 0°C~4°C, valid for 6 months. The standard solutions of other concentrations used in the experiment were all prepared from the 10.0 mg/mL standard stock solution with water.
5.1.2 Standard materials. ethanol, methanol, n-propanol, acetone, isopropanol, n-butanol, tert-butanol, the purity is not less than 99.5%.
5.1.3 10.0mg/mL ethanol (methanol, n-propanol, acetone, isopropyl alcohol, n-butanol) standard material stock solution. accurately weigh the standards separately Use an appropriate amount of substance ethanol (methanol, n-propanol, acetone, isopropanol, n-butanol) and water to prepare a 10.0mg/mL standard material stock solution.
Obtained by progressive dilution. Or use commercially available standard material solutions.
5.1.4 5.0mg/mL internal standard tert-butanol standard material stock solution. Precisely weigh 500.0mg tert-butanol into a 100mL volumetric flask, dilute to volume with water, store at 0°C~4°C, valid for 6 months.
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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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