Colourimetric determination of features of an air sampling technique optimal for detection of surfactants

Surfactants in the atmosphere may act as cloud condensation nuclei, with a potentially negative impact on the global climate. Therefore, accurate determination of surfactants is crucial in order to investigate the possible effects of surfactants on the atmosphere. The aim of this study was to identi...

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Main Authors:	Nur Hazimah Abdul Halim, Norfazrin Mohd. Hanif, Mohamed Rozali Othman, Mohd. Talib Latif
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2010
Online Access:	http://journalarticle.ukm.my/7317/ http://journalarticle.ukm.my/7317/1/01_Md_Yeaminhossain.pdf

id	ukm-7317
recordtype	eprints
spelling	ukm-73172016-12-14T06:43:43Z http://journalarticle.ukm.my/7317/ Colourimetric determination of features of an air sampling technique optimal for detection of surfactants Nur Hazimah Abdul Halim, Norfazrin Mohd. Hanif, Mohamed Rozali Othman, Mohd. Talib Latif, Surfactants in the atmosphere may act as cloud condensation nuclei, with a potentially negative impact on the global climate. Therefore, accurate determination of surfactants is crucial in order to investigate the possible effects of surfactants on the atmosphere. The aim of this study was to identify the optimum sampling method for measuring the maximum quantity of surfactants present in ambient air. Air samples were collected using a range of air sampling pumps that were made to vary in terms of flow rate, storage period, type of absorbing solution and the characteristics of the impinger tube. Samples obtained were analysed by colourimetry for anionic and cationic surfactants as methylene blue-active substances (MBAS) and disulphine blue-active substances (DBAS), respectively. Absorbance was measured at 650 nm for MBAS and 628 nm for DBAS using UV-visible spectrophotometer. We found that the optimum sampling method consisted of an absorbent solution (deionised water, buffer solution and methylene blue/disulphine blue solution) with the flow rate of 1.0 L/min. The concentration of surfactants in all sampling methods remained constant regardless of the storage period (1 day and 4 days), indicating that surfactants in the absorbing solution are quite stable. Covering the impinger tube was shown to influence the amount of both anionic and cationic surfactants detected. Universiti Kebangsaan Malaysia 2010-04 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/7317/1/01_Md_Yeaminhossain.pdf Nur Hazimah Abdul Halim, and Norfazrin Mohd. Hanif, and Mohamed Rozali Othman, and Mohd. Talib Latif, (2010) Colourimetric determination of features of an air sampling technique optimal for detection of surfactants. Sains Malaysiana, 39 (2). pp. 175-179. ISSN 0126-6039
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Surfactants in the atmosphere may act as cloud condensation nuclei, with a potentially negative impact on the global climate. Therefore, accurate determination of surfactants is crucial in order to investigate the possible effects of surfactants on the atmosphere. The aim of this study was to identify the optimum sampling method for measuring the maximum quantity of surfactants present in ambient air. Air samples were collected using a range of air sampling pumps that were made to vary in terms of flow rate, storage period, type of absorbing solution and the characteristics of the impinger tube. Samples obtained were analysed by colourimetry for anionic and cationic surfactants as methylene blue-active substances (MBAS) and disulphine blue-active substances (DBAS), respectively. Absorbance was measured at 650 nm for MBAS and 628 nm for DBAS using UV-visible spectrophotometer. We found that the optimum sampling method consisted of an absorbent solution (deionised water, buffer solution and methylene blue/disulphine blue solution) with the flow rate of 1.0 L/min. The concentration of surfactants in all sampling methods remained constant regardless of the storage period (1 day and 4 days), indicating that surfactants in the absorbing solution are quite stable. Covering the impinger tube was shown to influence the amount of both anionic and cationic surfactants detected.
format	Article
author	Nur Hazimah Abdul Halim, Norfazrin Mohd. Hanif, Mohamed Rozali Othman, Mohd. Talib Latif,
spellingShingle	Nur Hazimah Abdul Halim, Norfazrin Mohd. Hanif, Mohamed Rozali Othman, Mohd. Talib Latif, Colourimetric determination of features of an air sampling technique optimal for detection of surfactants
author_facet	Nur Hazimah Abdul Halim, Norfazrin Mohd. Hanif, Mohamed Rozali Othman, Mohd. Talib Latif,
author_sort	Nur Hazimah Abdul Halim,
title	Colourimetric determination of features of an air sampling technique optimal for detection of surfactants
title_short	Colourimetric determination of features of an air sampling technique optimal for detection of surfactants
title_full	Colourimetric determination of features of an air sampling technique optimal for detection of surfactants
title_fullStr	Colourimetric determination of features of an air sampling technique optimal for detection of surfactants
title_full_unstemmed	Colourimetric determination of features of an air sampling technique optimal for detection of surfactants
title_sort	colourimetric determination of features of an air sampling technique optimal for detection of surfactants
publisher	Universiti Kebangsaan Malaysia
publishDate	2010
url	http://journalarticle.ukm.my/7317/ http://journalarticle.ukm.my/7317/1/01_Md_Yeaminhossain.pdf
first_indexed	2023-09-18T19:49:21Z
last_indexed	2023-09-18T19:49:21Z
_version_	1777406115058810880

Colourimetric determination of features of an air sampling technique optimal for detection of surfactants

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