Pollution of ground and drinking water with volatile organic compounds: Solid‐phase microextraction and GC/MS analysis

1996 ◽  
Vol 55 (1-4) ◽  
pp. 73-81 ◽  
Author(s):  
Ashraf A. M. Hassan ◽  
Emilio Benfenati ◽  
Gabriella Facchini ◽  
Roberto Fanelli

Separations ◽  
2018 ◽  
Vol 5 (3) ◽  
pp. 45 ◽  
Author(s):  
Kevin Eckert ◽  
David Carter ◽  
Katelynn Perrault

Volatile organic compounds (VOCs) are monitored in numerous fields using several commercially-available sampling options. Sorbent-based sampling techniques, such as solid-phase microextraction (SPME), provide pre-concentration and focusing of VOCs prior to gas chromatography–mass spectrometry (GC–MS) analysis. This study investigated the dynamics of SPME Arrow, which exhibits an increased sorbent phase volume and improved durability compared to traditional SPME fibers. A volatile reference mixture (VRM) and saturated alkanes mix (SAM) were used to investigate optimal parameters for microbiological VOC profiling in combination with GC–MS analysis. Fiber type, extraction time, desorption time, carryover, and reproducibility were characterized, in addition to a comparison with traditional SPME fibers. The developed method was then applied to longitudinal monitoring of Bacillus subtilis cultures, which represents a ubiquitous microbe in medical, forensic, and agricultural applications. The carbon wide range/polydimethylsiloxane (CWR/PDMS) fiber was found to be optimal for the range of expected VOCs in microbiological profiling, and a statistically significant increase in the majority of VOCs monitored was observed. B. subtilis cultures released a total of 25 VOCs of interest, across three different temporal trend categories (produced, consumed, and equilibrated). This work will assist in providing foundational data for the use of SPME Arrow in future microbiological applications.



1995 ◽  
Vol 18 (10) ◽  
pp. 617-624 ◽  
Author(s):  
Torben Nilsson ◽  
Fabio Pelusio ◽  
Luca Montanarella ◽  
Bo Larsen ◽  
Sergio Facchetti ◽  
...  


2021 ◽  
Vol 21 ◽  
pp. 100435
Author(s):  
Khaled Murtada ◽  
Virginia Galpin ◽  
Jonathan J. Grandy ◽  
Varoon Singh ◽  
Freddy Sanchez ◽  
...  


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