Sample preparation for gas chromatographic determination of halogenated volatile organic compounds in environmental and biological samples

Natalia, Jakubowska; Zygmunt, Bogdan; Polkowska, Żaneta; Zabiegała, Bożena; Namieśnik, Jacek

doi:10.1016/j.chroma.2008.08.092

Cited by 30 publications

(12 citation statements)

References 110 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The system of HS -GC can easily be automated allowing many analyses to be made without human intervention. The technique was successfully applied to determine a wide spectrum of volatile organics in polluted waters [13,14]. Attempts have also been made to apply the approach to determine alkano monocarboksylic acids with 2 to 6 carbon atoms in a molecule in some polluted aqueous samples.…”

Section: Introductionmentioning

confidence: 99%

Studies on development of headspace - gas chromatographic determination of volatile fatty acids in troublesome environmental samples

Zygmunt

Banel

Wasielewska

et al. 2010

2010 International Conference on Chemistry and Chemical Engineering

Self Cite

View full text Add to dashboard Cite

A research was done to develop procedure of determination of volatile fatty acids (VFAs) in heavily polluted wastewaters using an automated static headspace (HS) unit combined with gas chromatograph (GC) with flame ionization detector (FID). Separation conditions were determined under which VFAs with 2-8 carbon atoms in a molecule separate well on a Stabilwax capillary column. Factors such as sample volume, and time and temperature of sample-HS conditioning have been selected for acetic, propionic, iso-and n-butyric, isoand n-valeric and n-capronic acids in the concentration range 0.1-1000 mg/L. HS conditions were: maintaining the system at 95 o C for 30 min, 2mL sample volume placed in 15 mL extraction vial, acidified to pH 2 and salted out with 0.75 g NaCl. In quantitation better results were obtained when was calibration curve divided to the part close to detection limit and to the part for higher concentrations. Validation process has been started.

show abstract

Section: Introductionmentioning

confidence: 99%

Studies on development of headspace - gas chromatographic determination of volatile fatty acids in troublesome environmental samples

Zygmunt

Banel

Wasielewska

et al. 2010

2010 International Conference on Chemistry and Chemical Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

“…Carbon tetrachloride (CTC) is widely used in industry as a solvent, a cleaning and degreasing agent, a polymerization and blowing agent and a disinfectant . In most techniques, extraction requires using a solvent suitable for analyzing carbon tetrachloride in an aqueous solution . SPME and needle trap devices (NTD) as two solvent‐free micro‐sampling and micro‐extraction techniques, which currently under development for the sampling and extraction of volatile organic compounds (VOCs) from air were both introduced by Pawliszyn and coworkers .…”

Section: Introductionmentioning

confidence: 99%

Application of graphene nanoplatelets silica composite, prepared by sol-gel technology, as a novel sorbent in two microextraction techniques

et al. 2015

View full text Add to dashboard Cite

In this study, the application of a novel nanomaterial composite was investigated in two microextraction techniques of solid-phase microextraction and a needle trap device in a variety of sampling conditions. The optimum sampling temperature and relative humidity were 10°C and 20%, respectively, for both techniques with two sorbents of graphene/silica composite and polydimethyl siloxane. The two microextraction techniques with the proposed sorbent showed recoveries of 95.2 and 94.6% after 7 days. For the needle trap device the optimums desorption time and temperature were 3 min at 290°C and for SPME these measures were 1 and 1.5 min at 240-250°C for the graphene/silica composite and polydimethyl siloxane, respectively. The relative standard division obtained in inter- and intra-day comparative studies were 3.3-14.3 and 5.1-25.4, respectively. For four sample the limit of detection was 0.021-0.25 ng/mL, and the limit of quantitation was 0.08-0.75 ng/mL. The results show that the graphene/silica composite is an appropriate extraction media for both techniques. Combining an appropriate sorbent with microextraction techniques, and using these in conjunction with a sensitive analytical instrument can introduce a strong method for sampling and analysis of occupational and environmental pollutants in air.

show abstract

“…Solid phase extraction (SPE) is based on selective retention of analytes on a sorbent and subsequent elution with a suitable solvent (Jakubowska et al, 2009). SPE generally involves four steps i.e.…”

Section: Solid Phase Extraction (Spe)mentioning

confidence: 99%

Modern Sample Preparation Techniques for Pesticide Analysis

Mmualefe¹,

Mpofu²,

Torto³

2011

Pesticides in the Modern World - Trends in Pesticides Analysis

View full text Add to dashboard Cite

Sample preparation for gas chromatographic determination of halogenated volatile organic compounds in environmental and biological samples

Cited by 30 publications

References 110 publications

Studies on development of headspace - gas chromatographic determination of volatile fatty acids in troublesome environmental samples

Studies on development of headspace - gas chromatographic determination of volatile fatty acids in troublesome environmental samples

Application of graphene nanoplatelets silica composite, prepared by sol-gel technology, as a novel sorbent in two microextraction techniques

Modern Sample Preparation Techniques for Pesticide Analysis

Contact Info

Product

Resources

About