Determination of Toluene by Needle Trap Micro-Extraction with Carbon Nanotube Sol-Gel and Polydimethylsiloxane Sorbents

Zeverdegani, Sara Karimi; Bahrami, Abdulrahman; Rismanchian, Mansour; Heidari, Mahmoud

doi:10.1080/00032719.2014.900782

Cited by 7 publications

(2 citation statements)

References 12 publications

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“…Recently, the needle trap method has been used to sample volatile compounds in urine and breath with three new sorbents, including single‐wall carbon nanotube (SW‐CNT) mix to sol–gel adsorbent (Zeverdegani, Bahrami, Rismanchian, & Shahna, 2014; Zeverdegani, Bahrami, Shahna, et al, 2014), titanium dioxide–polyaniline core–shell nanocomposite (Banihashemi & Bagheri, 2017) and metal organic frameworks (MOFs) (Saedi et al, 2020).…”

Section: Spmementioning

confidence: 99%

“…Carbon nanotubes have a high surface area, mechanical strength and chemical stability (Iijima, 1991), and the sol–gel technique is an efficient method for making homogenous sorbents that can be used in NTDs with high purity, intense mixing and thermal stability (Kumar et al, 2008). Single‐wall carbon nanotubes with sol–gel as a new sorbent have been applied to extract toluene, xylene isomers and methyl ethyl ketones in water and urine samples (Zeverdegani, Bahrami, Rismanchian, & Shahna, 2014; Zeverdegani, Bahrami, Shahna, et al, 2014).…”

Section: Spmementioning

confidence: 99%

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A review of new adsorbents for separation of BTEX biomarkers

Bahrami

Pirmohammadi

Bahrami

2021

Biomedical Chromatography

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The biomarker analysis of benzene, toluene, ethylbenzene and xylene (BTEXs) in biological samples is the primary technique for evaluating these compounds in occupational and environmental exposures. The BTEX biomarkers are widely used to study the BTEX distribution in the environment and workplaces. Liquid–liquid extraction and solid‐phase liquid extraction are among the most commonly used conventional methods to analyze biological indices of BTEXs. New methods have been proposed to analyze BTEX biomarkers using novel adsorbents such as sol–gel composite nanotubes, molecularly imprinted polymers and metal–organic frameworks, which are based on the application of needle trap devices, microextraction by packed sorbent, and solid‐phase microextraction techniques. This paper provides an overview of new methods since 2015 regarding applying microextraction methods based on new adsorbents and analyzing BTEX biomarker compounds for occupational and environmental exposures. The results were compared with the liquid‐phase microextraction methods recommended for urinary BTEX biomarkers.

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Section: Spmementioning

confidence: 99%

Section: Spmementioning

confidence: 99%

A review of new adsorbents for separation of BTEX biomarkers

Bahrami

Pirmohammadi

Bahrami

2021

Biomedical Chromatography

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Application of Needle Trap Device Based on the Carbon Aerogel for Trace Analysis of n-Hexane in Air Samples

et al. 2019

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Analysis of formaldehyde and acrolein in the aqueous samples using a novel needle trap device containing nanoporous silica aerogel sorbent

Barkhordari

Azari

Zendehdel

et al. 2017

Environ Monit Assess

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In this research, a needle trap device (NTD) packed with nanoporous silica aerogel as a sorbent was used as a new technique for sampling and analysis of formaldehyde and acrolein compounds in aqueous and urine samples. The obtained results were compared with those of the commercial sorbent Carboxen1000. Active sampling was used and a 21-G needle was applied for extraction of gas in the sample headspace. The optimization of experimental parameters like salt addition, temperature and desorption time was done and the performance of the NTD for the extraction of the compounds was evaluated. The optimum temperature and time of desorption were 280 °C and 2 min, respectively. The ranges of limit of detection, limit of quantification and relative standard deviation (RSD) were 0.01-0.03 μg L, 0.03-0.1 μg L and 2.8-7.3%, respectively. It was found that the NTD containing nanoporous silica aerogel had a better performance. Thus, this technique can be applied as an effective and reliable method for sampling and analysis of aldehyde compounds from different biological matrices like urine, exhalation and so on.

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Determination of Toluene by Needle Trap Micro-Extraction with Carbon Nanotube Sol-Gel and Polydimethylsiloxane Sorbents

Cited by 7 publications

References 12 publications

A review of new adsorbents for separation of BTEX biomarkers

A review of new adsorbents for separation of BTEX biomarkers

Application of Needle Trap Device Based on the Carbon Aerogel for Trace Analysis of n-Hexane in Air Samples

Analysis of formaldehyde and acrolein in the aqueous samples using a novel needle trap device containing nanoporous silica aerogel sorbent

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