Luftkvalitet

Ämnesområden: Omgivningsluft
Kommittébeteckning: SIS/TK 423 (Luftkvalitet)
Källa: ISO
Svarsdatum: den 1 aug 2018
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This International Standard specifies a reference method using transmission electron microscopy for the determination of airborne asbestos fibres and structures in in a wide range of ambient air situations, including the interior atmospheres of buildings, and for a detailed evaluation for asbestos structures in any atmosphere. The specimen preparation procedure incorporates ashing and dispersion of the collected particulate, so that all asbestos is measured, including the asbestos originally incorporated in particle aggregates or particles of composite materials. The lengths, widths and aspect ratios of the asbestos fibres and bundles are measured, and these, together with the density of the type of asbestos, also allow the total mass concentration of airborne asbestos to be calculated. The method allows determination of the type(s) of asbestos fibres present. The method cannot discriminate between individual fibres of the asbestos and non-asbestos analogues of the same amphibole mineral.

Ämnesområden: Omgivningsluft
Kommittébeteckning: SIS/TK 423 (Luftkvalitet)
Källa: ISO
Svarsdatum: den 7 aug 2018
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This International Standard specifies a reference method using transmission electron microscopy for the determination of airborne asbestos fibres and structures in in a wide range of ambient air situations, including the interior atmospheres of buildings, and for a detailed evaluation for asbestos structures in any atmosphere. The method allows determination of the type(s) of asbestos fibres present and also includes measurement of the lengths, widths and aspect ratios of the asbestos structures. The method cannot discriminate between individual fibres of asbestos and elongate fragments from non-asbestos analogues of the same amphibole mineral.

Ämnesområden: Omgivningsluft
Kommittébeteckning: SIS/TK 423 (Luftkvalitet)
Källa: ISO
Svarsdatum: den 20 sep 2018
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This part of ISO 16000 concerns a method for the determination of primary, secondary and tertiary aliphatic and aromatic amines in indoor air using accumulated sampling and high-performance liquid-chromatography (HPLC) coupled with tandem mass spectrometry (MS-MS) or high resolution mass spectrometry (HRMS). This standard specifies the sampling procedure for determining the mass concentration of amines as mean values by sampling the amines on phosphoric acid impregnated filters. The analytical procedure of the measurement method is covered by ISO 16000-39.

Measurements, performed with samplers containing phosphoric acid-impregnated inert supporting material and operating at specified flow rates for specified sampling periods are described in this document. Requirements regarding sample volume are defined.

The range of application of this International Standard concerning the concentrations of amines in indoor air depends on the linear range of the calibration line and hence on the gas sample volume (here: from 5 l up to 100 l), the eluate volume (from 1 ml up to 5 ml), the injection volume (from 1 μl up to 10 μl) and the sensitivity of the analytical equipment (e.g. linear range from 2 pg up to 2 ng amine). The range of application can be expected to be from approximately 0,002 μg/m3 (100 l sample) up to 2 000 μg/m3 (5 l sample) for a common analytical equipment (e.g. Waters „TQ-D") for the majority of the amines listed in Annex A. The analysis of derivatives of ethanolamine is usually about 10 times more sensitive and the analysis of short-chained aliphatic amines is usually about 10 times less sensitive than the analysis of an average amine.

Although primarily intended for the measurement of amines listed in Annex A, this International Standard may be used also for the measurement of other amines in indoor air.

This International Standard describes procedures for the fabrication and gives requirements for the use of glass tubes containing impregnated filters out of phosphoric acid-impregnated glass wool as samplers, but does not exclude other samplers with proven equal or improved properties. This Standard also gives procedures for the demonstration of equivalence of other sampler types or methods.

This International Standard does not cover the determination of amines in other media like water or soil. Furthermore, it does not cover the determination of isocyanates in indoor air as corresponding amines (covered by ISO 17734 Part 1 and 2). Also quaternary amines are not included in this International Standard.

Ämnesområden: Omgivningsluft
Kommittébeteckning: SIS/TK 423 (Luftkvalitet)
Källa: ISO
Svarsdatum: den 20 sep 2018
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ISO 16000 Part 39 – in combination with ISO 16000 Part 38 – specifies the measurement method for determining the mass concentration of primary, secondary and tertiary aliphatic and aromatic amines in indoor air using accumulated sampling and high-performance liquid chromatography (HPLC) coupled with tandem mass spectrometry (MS-MS) or high resolution mass spectrometry (HRMS). The analytical procedure is covered by this standard. The sampling procedure and the manufacturing of the samplers are covered by ISO 16000 Part 38.

ISO 16000-39 mentions specifications for the chromatography and the mass spectroscopy for the amines. Measurement results are expressed in μg/m3.

Although primarily intended for the measurement of amines listed in Table A.1 in Annex A of this International Standard, it may be used also for the measurement of other amines in indoor air. This International Standard gives instructions and describes procedures for the inclusion of other amines.

The range of application of this International Standard concerning the concentrations of amines in indoor air depends on the linear range of the calibration line and hence on the gas sample volume (here: from 5 l up to 100 l), the eluate volume (from 1 ml up to 5 ml), the injection volume (from 1 μl up to 10 μl) and the sensitivity of the analytical equipment (e.g. linear range from 2 pg up to 2 ng amine). The range of application can be expected to be from approximately 0,002 μg/m3 (100 l sample) up to 2 000 μg/m3 (5 l sample) for a common analytical equipment (e.g. Waters „TQ-D") for the majority of the amines listed in Table A.1 in Annex A. The analysis of derivatives of ethanolamine is usually about 10 times more sensitive and the analysis of short-chained aliphatic amines is usually about 10 times less sensitive than the analysis of an average amine.

This International Standard can be used also for the determination of amines in water if the detection limit is sufficient.

This International Standard does not cover the determination of isocyanates in indoor air (nor in water samples) as corresponding amines (covered by ISO 17734 Part 1 and 2).