Solid-phase microextraction (SPME) for determination of geosmin and 2-methylisoborneol in volatile emissions from soil disturbance

Chemosphere ◽  
2021 ◽  
pp. 131333
Author(s):  
Morgan W. Conrady ◽  
Markus Bauer ◽  
Kyoo D. Jo ◽  
Donald M. Cropek ◽  
Ryan R. Busby
Keyword(s):  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Soil Disturbance ◽  
Volatile Emissions

Solid-phase microextraction (SPME) for determination of geosmin and 2-methylisoborneol in volatile emissions from soil disturbance

2021 ◽  
Author(s):  
Morgan Conrady ◽  
Markus Bauer ◽  
Kyoo Jo ◽  
Donald Cropek ◽  
Ryan Busby
Keyword(s):  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Soil Disturbance ◽  
Extraction Temperature ◽  
Volatile Chemicals ◽  
Desorption Temperature ◽  
Peak Areas ◽  
Soil Disturbances ◽  
Undisturbed Soils

A method is described here for the concentration and determination of geosmin and 2-methylisoborneol (2-MIB) from the gaseous phase, with translation to field collection and quantification from soil disturbances in situ. The method is based on the use of solid-phase microextraction (SPME) fibers for adsorption of volatile chemicals from the vapor phase, followed by desorption into a gas chromatograph-mass spectrometer (GC-MS) for analysis. The use of a SPME fiber allows simple introduction to the GC-MS without further sample preparation. Several fiber sorbent types were studied and the 50/30 μm DVB/CAR/PDMS was the best performer to maximize the detected peak areas of both analytes combined. Factors such as extraction temperature and time along with desorption temperature and time were explored with respect to analyte recovery. An extraction temperature of 30 ◦C for 10 min, with a desorption temperature of 230 ◦C for 4 min was best for the simultaneous analysis of both geosmin and 2-MIB without complete loss of either one. The developed method was used successfully to measure geosmin and 2-MIB emission from just above disturbed and undisturbed soils, indicating that this method detects both compounds readily from atmospheric samples. Both geosmin and 2-MIB were present as background concentrations in the open air, while disturbed soils emitted much higher concentrations of both compounds. Surprisingly, 2-MIB was always detected at higher concentrations than geosmin, indicating that a focus on its detection may be more useful for soil emission monitoring and more sensitive to low levels of soil disturbance.

A Novel Solid-phase Microextraction Method Coupled with HPLC for Determination of Four Sulfonamides in Milk Samples

2013 ◽  
Vol 41 (4) ◽  
pp. 529
Author(s):  
Ying PENG ◽  
Huan HE ◽  
Cheng SUN ◽  
Ya-Ling ZHANG ◽  
Wen-Chao LI ◽  
...  
Keyword(s):  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Milk Samples

scholarly journals Applications of solid phase microextraction for the determination of metallic and organometallic species

2006 ◽  
Vol 29 (3) ◽  
pp. 333-345 ◽  
Author(s):  
Varinder Kaur ◽  
Ashok Kumar Malik ◽  
Neelam Verma
Keyword(s):  
Solid Phase Microextraction ◽  
Solid Phase
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