ISO 19739:2004 PDF

Name: ISO 19739:2004 — Natural gas — Determination of sulfur compounds using gas chromatography
SKU: ISO 19739:2004
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Natural gas — Determination of sulfur compounds using gas chromatography

Название (английский):

ISO 19739:2004

Natural gas — Determination of sulfur compounds using gas chromatography

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 55
Дата публикации:: 5 мая 2004 г.
Издание:: ISO IS 19739 edition 1 version 1
ICS:: 75.060

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Описание (английский):

ISO 19739:2004 specifies the determination of hydrogen sulfide, carbonyl sulfide, C1 to C4 thiols, sulfides and tetrahydrothiophene (THT) using gas chromatography (GC). Depending on the method chosen from those given in its annexes, the application ranges for the determination of sulfur compounds can vary, but whichever of the methods is used, its requirements apply.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview - ISO 19739:2004 (Natural gas, sulfur compounds, GC)

ISO 19739:2004 specifies procedures for the determination of sulfur compounds in natural gas using gas chromatography (GC). The standard covers analysis of hydrogen sulfide (H2S), carbonyl sulfide (COS), C1–C4 thiols, alkyl sulfides and tetrahydrothiophene (THT). It provides requirements for sampling, instrument setup, calibration, analysis and performance characteristics. Multiple GC-based methods are described in informative annexes so laboratories can select the most appropriate detector/column combination for their needs.

Key topics and technical requirements

Scope of analysis: H2S, COS, mercaptans (thiols), sulfides and cyclic sulfides such as THT.

Analytical principle: physical separation by GC and quantification by comparison with calibrated reference gases under identical measurement conditions.

Sampling and handling: representative sampling per ISO 10715; attention to adsorption and reactive losses; purge times and heated transfer lines are recommended to avoid loss of low-level sulfur species.

Temperature and storage: calibration and sample cylinders should be stored at temperatures above condensation points; if condensation occurred, allow horizontal storage and homogenization (example: 7 days) before use.

Materials and cleanliness: use construction materials inert to sulfur compounds; inspect and clean cylinder connections to avoid contamination or loss.

Columns and resolution: select stationary phases and column dimensions that achieve chromatographic resolution of at least 1.5 between adjacent peaks for reliable quantitation.

Detectors and methods: annexes describe multiple detectors and GC configurations (fluorescence, sulfur-specific detectors, mass spectrometry, atomic emission, sulfur chemiluminescence, pulsed flame photometric detector options and column-switching strategies).

Calibration and traceability: use primary/secondary/working reference gas mixtures and follow calibration procedures to ensure accuracy and comparability.

Performance and reporting: specify repeatability/reproducibility, limits of detection, and required information in the test report.

Practical applications - who uses ISO 19739

Natural gas producers and processors for quality control and odorant verification.

Pipeline and transmission operators for safety monitoring and compliance.

Analytical laboratories performing sulfur-speciation and trace sulfur analysis.

Calibration gas manufacturers and instrument vendors validating GC methods.

Regulators and inspection bodies assessing conformity with gas quality and safety requirements.

Related standards

ISO 10715 - Natural gas sampling guidelines

ISO 14532 - Natural gas vocabulary

ISO 5725-2 - Measurement accuracy (repeatability/reproducibility)

ISO 6141, ISO 6143, ISO 6145-10 - Calibration gas preparation and certification

ISO 19739:2004 is essential for reliable, traceable GC-based sulfur analysis in natural gas, helping laboratories choose appropriate methods and meet safety and quality requirements.

ISO 19739:2004 PDF

Abstract

Похожие стандарты

Overview - ISO 19739:2004 (Natural gas, sulfur compounds, GC)

Key topics and technical requirements

Practical applications - who uses ISO 19739

Related standards

Технические детали

SIST EN ISO 10715:2023

Natural gas - Gas sampling (ISO 10715:2022)

SIST EN ISO 19739:2006/AC:2009

Natural gas - Determination of sulfur compounds using gas chromatography (ISO 19739:2004/Cor 1:2009)

ISO 14532:2026

Natural gas — Vocabulary

SIST ISO 5725-2:2020

Accuracy (trueness and precision) of measurement methods and results - Part 2: Basic method for the determina…

ISO 6141:2015/Amd 1:2020

Gas analysis — Contents of certificates for calibration gas mixtures — Amendment 1: Cross reference list to I…

SIST EN ISO 6143:2026

Gas analysis - Comparison methods for determining and checking the composition of calibration gas mixtures (I…

SIST EN ISO 6145-10:2008

Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 10: Permeation…