Trace analysis of semi‐volatile organic air pollutants using thick film silicone rubber traps with capillary gas chromatography

Ortner, Erla K.; Rohwer, Egmont Richard

doi:10.1002/jhrc.1240190607

Cited by 49 publications

(37 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Multichannel traps containing 0.099±0.02 g silicone, providing a sample enrichment volume of 106 µL PDMS, were prepared based on a technique described by Ortner and Rohwer [30]. The MCT was designed to fit a commercial thermal desorber system.…”

Section: Multichannel Open Tubular Pdms Traps (Mcts) For Heart-cut Comentioning

confidence: 99%

Two multidimensional chromatographic methods for enantiomeric analysis of o,p′-DDT and o,p′-DDD in contaminated soil and air in a malaria area of South Africa

Naude

Rohwer

2012

Analytica Chimica Acta

Self Cite

View full text Add to dashboard Cite

In rural parts of South Africa the organochlorine insecticide DDT (1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane) is still used for malaria vector control where traditional dwellings are sprayed on the inside with small quantities of technical DDT. Since o,p'-DDT may show enantioselective oestrogenicity and biodegradability, it is important to analyse enantiomers of o,p'-DDT and its chiral degradation product, o,p'-DDD, for both health and environmentalforensic considerations. Generally, chiral analysis is performed using heartcut multidimensional gas chromatography (MDGC) and, more recently, comprehensive two-dimensional gas chromatography (GC x GC). We developed an off-line gas chromatographic fraction collection (heart-cut) procedure for the selective capturing of the appropriate isomers from a first

show abstract

Section: Multichannel Open Tubular Pdms Traps (Mcts) For Heart-cut Comentioning

confidence: 99%

Two multidimensional chromatographic methods for enantiomeric analysis of o,p′-DDT and o,p′-DDD in contaminated soil and air in a malaria area of South Africa

Naude

Rohwer

2012

Analytica Chimica Acta

Self Cite

View full text Add to dashboard Cite

show abstract

“…Particulates were sampled 10 min after ignition of the fire for 30 min onto pre-cleaned quartz fibre filters (6 mm diameter), held between two empty glass tubes with a Teflon connection. Gas phase organic emissions were sampled for 10 min onto two polydimethylsiloxane (PDMS) multi-channel rubber traps [5] in series (primary and secondary traps, respectively) 40 min after ignition.…”

Section: Traditional Methodsmentioning

confidence: 99%

Particle emissions from household fires in South Africa

Forbes¹

2012

Air Pollution XX

View full text Add to dashboard Cite

The effects of airborne particles on the atmosphere, climate and public health are among the central topics in current environmental research. South Africa is a developing country, therefore not all households have access to electricity. In municipalities in the province of the Eastern Cape, for example, electricity usage for cooking ranges from 95.5% of households to only 8.1%. The households which do not utilise electricity make use of other resources to meet their needs in terms of energy provision for lighting, cooking and heating, including charcoal and wood burning in braziers. This paper investigates the particle emissions from household fires prepared using two methods, with reference to potential human health effects. Particles were sampled onto quartz fibre filters, which were analysed by scanning electron microscopy and GCxGC-MS. Particulate matter collected near the traditional fire contained higher concentrations of adsorbed organic compounds, including polycyclic aromatic hydrocarbons, which are of concern due to their potential human health effects. Changes in combustion conditions had a marked effect on the organic and particulate emissions. An integrated approach to reduce potential exposure from household fires should be explored, including energy efficient housing design; the provision of cost effective, energy efficient combustion appliances; as well as appropriate community education campaigns.

show abstract

“…Traps which had been originally designed for solventless GC-MS analysis of environmental air and water samples (Ortner and Rohwer, 1996) were modified only by replacing the outer borosilicate glass sleeve by one made of UV-transparent quartz. The traps contained 22 internal silicone tubes, each 5.5 cm long (Sil-Tec, Technical Products, USA).…”

Section: Multi-channel Silicone Rubber Traps and Gas Standardsmentioning

confidence: 99%

“…Multi-channel polydimethylsiloxane (PDMS) traps have been developed for semi-volatile organic air pollutant monitoring with TD-GC-MS analysis (Ortner and Rohwer, 1996). Packed bed PDMS traps (Baltussen et al, 1997) and mixed bed traps containing PDMS foam, PDMS particles and Tenax TA (Wauters et al, 2008) have also been tested in this application.…”

Section: Introductionmentioning

confidence: 99%

Investigations into a novel method for atmospheric polycyclic aromatic hydrocarbon monitoring

Forbes

Rohwer

2009

Environmental Pollution

Self Cite

View full text Add to dashboard Cite

A novel method for rapid analysis of atmospheric PAHs by laser induced fluorescence allows for more detailed trend determinations. a r t i c l e i n f o a b s t r a c tA novel analytical method for atmospheric polycyclic aromatic hydrocarbons (PAHs) was developed based on laser induced fluorescence (LIF) of samples on quartz multi-channel polydimethylsiloxane traps. A tunable dye laser with a frequency doubling crystal provided the excitation radiation, and a double monochromator with a photomultiplier tube detected emitted fluorescence. The method allowed for the rapid (<5 min), cost effective analysis of samples. Those yielding interesting results could be further analysed by direct thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS, with limits of detection of w0.3 ng m À3 ), as photodegradation was minimal (<10% over 5 min irradiation). Small amounts of naphthalene photodegradation products identified by TD-GC-MS after >15 min irradiation, included phenol, benzyl alcohol and phthalic anhydride. Without any signal optimization, a LIF detection limit of w1 mg m À3 was established for naphthalene using a diffusion tube (diffusion rate of 2 ng s À1 ) and 292 nm excitation.

show abstract

Trace analysis of semi‐volatile organic air pollutants using thick film silicone rubber traps with capillary gas chromatography

Cited by 49 publications

References 21 publications

Two multidimensional chromatographic methods for enantiomeric analysis of o,p′-DDT and o,p′-DDD in contaminated soil and air in a malaria area of South Africa

Two multidimensional chromatographic methods for enantiomeric analysis of o,p′-DDT and o,p′-DDD in contaminated soil and air in a malaria area of South Africa

Particle emissions from household fires in South Africa

Investigations into a novel method for atmospheric polycyclic aromatic hydrocarbon monitoring

Contact Info

Product

Resources

About