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Nitrobenzene – method for the determination of nitrobenzene in workplace air using gas chromatography after thermal desorption [Air monitoring methods, 2019]


Hartwig, A; MAK Commission; Arand, Michael; et al (2019). Nitrobenzene – method for the determination of nitrobenzene in workplace air using gas chromatography after thermal desorption [Air monitoring methods, 2019]. The MAK Collection for Occupational Health and Safety, 4(4):2375-2390.

Abstract

This analytical method is a validated measurement procedure for the determination of nitrobenzene [98‐95‐3] in workplace air in a concentration range of one tenth up to twice the currently valid OEL or MAK value of 0.51 mg/m3. With this method simultaneously airborne nitrobenzene in the gaseous state as well as particles are collected. Sampling is performed by drawing a defined volume of air through a quartz fibre filter located in the sampling head GGP‐Mini with an adsorption tube filled with Tenax TA connected downstream using a suitable pump. The flow rate is set to 0.066 L/min with a recommended air sample volume of approx. 4 litres. The collected nitrobenzene is thermally desorbed and then analysed by means of gas chromatography using two detectors, a FID for quantification and a MSD to recognise potential interferences. The quantitative determination is based on a calibration function obtained by means of a multi‐point calibration. The limit of quantification is 0.0085 mg/m3 based on an air sample of 4 litres.

Abstract

This analytical method is a validated measurement procedure for the determination of nitrobenzene [98‐95‐3] in workplace air in a concentration range of one tenth up to twice the currently valid OEL or MAK value of 0.51 mg/m3. With this method simultaneously airborne nitrobenzene in the gaseous state as well as particles are collected. Sampling is performed by drawing a defined volume of air through a quartz fibre filter located in the sampling head GGP‐Mini with an adsorption tube filled with Tenax TA connected downstream using a suitable pump. The flow rate is set to 0.066 L/min with a recommended air sample volume of approx. 4 litres. The collected nitrobenzene is thermally desorbed and then analysed by means of gas chromatography using two detectors, a FID for quantification and a MSD to recognise potential interferences. The quantitative determination is based on a calibration function obtained by means of a multi‐point calibration. The limit of quantification is 0.0085 mg/m3 based on an air sample of 4 litres.

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Additional indexing

Item Type:Journal Article, not_refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Pharmacology and Toxicology
07 Faculty of Science > Institute of Pharmacology and Toxicology
Dewey Decimal Classification:570 Life sciences; biology
610 Medicine & health
Language:German
Date:13 November 2019
Deposited On:04 Feb 2020 15:29
Last Modified:04 Feb 2020 15:29
Publisher:Wiley-VCH Verlag
ISSN:2509-2383
ISBN:9783527600410
OA Status:Closed
Publisher DOI:https://doi.org/10.1002/3527600418.am9895e2019

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