Large-volume injection combined with gas chromatography/isotope ratio mass spectrometry for the analysis of polycyclic aromatic hydrocarbons

Buczyńska, A.J.; Geypens, Benny; Grieken, R. Van; Wael, Karolien De

doi:10.1002/rcm.6769

Cited by 9 publications

(5 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a consequence, an optimum vent time of 0.8 min was fixed. The occurrence of this phenomenon is in concordance with other works found in the literature where larger pre-peak areas were obtained using longer venting times [32]. This effect could be probably attributed to a bad focusing of the analytes, first in the injection port and then in the column, during the solvent venting [33].…”

Section: Optimization Of Lvi-ptv-gc-mssupporting

confidence: 85%

Focused ultrasound solid–liquid extraction for the determination of organic biomarkers in beachrocks

Blanco-Zubiaguirre

Arrieta

Iturregui

et al. 2015

Ultrasonics Sonochemistry

View full text Add to dashboard Cite

Beachrocks are consolidated coastal sedimentary formations resulting mainly from the relative rapid cementation of beach sediments by different calcium carbonate polymorphs. Although previous works have already studied the elemental composition and the mineral phases composing these cements, few of them have focused their attention on the organic matter present therein. This work describes an extraction methodology based on focused ultrasound solid-liquid extraction (FUSLE), followed by analysis using large volume injection (LVI) in a programmable temperature vaporizer (PTV) combined with gas chromatography-mass spectrometry (GC-MS) in order to determine organics such as polycyclic aromatic hydrocarbons (PAHs) and biomarkers (hopanes), which can increase and confirm the information obtained so far. This goal has been achieved after the optimization of the main parameters affecting the extraction procedure, such as, extraction solvent, FUSLE variables (amplitude, extraction time and pulse time) and also variables affecting the LVI-PTV (vent time, injection speed and cryo-focusing temperature). The developed method rendered results comparable to traditional extraction methods in terms of accuracy (77-109%) and repeatability (RSD<23%). Finally, the analyses performed over real beachrock samples from the Bay of Biscay (Northern Spain) revealed the presence of the 16 EPA priority PAHs, as well as some organic biomarkers which could increase the knowledge about such beachrock formation.

show abstract

Section: Optimization Of Lvi-ptv-gc-mssupporting

confidence: 85%

Focused ultrasound solid–liquid extraction for the determination of organic biomarkers in beachrocks

Blanco-Zubiaguirre

Arrieta

Iturregui

et al. 2015

Ultrasonics Sonochemistry

View full text Add to dashboard Cite

show abstract

“…LVI allows introducing into the GC large amounts of organic solvents, and also aqueous solutions [10,11]. LVI is useful especially for environmental trace analysis, such as the analysis of PAHs, where if LVI is not used, an enrichment of the analytes is necessary to reach the required limits of the detection [11].…”

Section: Introductionmentioning

confidence: 99%

Analysis of polycyclic aromatic hydrocarbons in aqueous samples by large volume injection gas chromatography–mass spectrometry using the through oven transfer adsorption desorption interface

Aragón

Toledano

Vázquez

et al. 2015

Talanta

View full text Add to dashboard Cite

“…The inlet temperature is adjusted in order that it below solvent boiling point, thus it can effectively decrease the discrimination of less volatile contents in the sample. In addition, since the resistance time of the injected sample at elevated temperature is shorter than that in the splitless injection mode, this can prevent thermal degradation and enhance the sensitivity [27]. Control of the time interval between each injection is necessary to ensure the elimination of solvent from the liner is completed.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Polycyclic Aromatic Hydrocarbon Using Programmable Temperature Vaporization Inlet Couple with Gas Chromatography Mass Spectrometry (PTV-GC-MS)

Wei¹,

Chee²

2017

Eurasian J Anal Chem

View full text Add to dashboard Cite

The conditions in programmable temperature vaporization inlet of a gas chromatographymass spectrometry (PTV-GC-MS) were optimized to enhance the detection of five compounds of polycyclic aromatic hydrocarbon (PAH) namely acenaphthylene, fluorene, anthracene, phenanthrene and pyrene. PTV parameters such as injection volume, vent pressure, vent time, vent flow, initial heating rate, purge flow rate, purge time and injection delay time were optimized. The optimized injection volume was 150 µL, which was introduced into the inlet by six times repeating injection of 25 µL using automatic liquid sampler at an interval of 5 seconds between each injection. The optimized vent flow and pressure are 400 mL/min and 5 psi for 2 minutes, respectively. The purge flow rate and initial heating rate were optimized to 400 mL/min for 2 minutes and 400 o C/min. The performance of PTV solvent vent mode was compared to the splitless injection mode. The obtained limit of detection (LOD) in solvent vent mode was approximately five to six times lower than the limit obtained in splitless injection mode. The determined recoveries varied from 98.1 to 98.9% with pooled relative standard deviations ranging from 9.8 to 11.4%.

show abstract

Large-volume injection combined with gas chromatography/isotope ratio mass spectrometry for the analysis of polycyclic aromatic hydrocarbons

Cited by 9 publications

References 34 publications

Focused ultrasound solid–liquid extraction for the determination of organic biomarkers in beachrocks

Focused ultrasound solid–liquid extraction for the determination of organic biomarkers in beachrocks

Analysis of polycyclic aromatic hydrocarbons in aqueous samples by large volume injection gas chromatography–mass spectrometry using the through oven transfer adsorption desorption interface

Analysis of Polycyclic Aromatic Hydrocarbon Using Programmable Temperature Vaporization Inlet Couple with Gas Chromatography Mass Spectrometry (PTV-GC-MS)

Contact Info

Product

Resources

About