Differential thermal analysis, thermal gravimetric analysis, and solid phase micro-extraction gas chromatography analysis of water and fuel absorption in diesel soot

2010 ◽  
Vol 41 (2) ◽  
pp. 237-241 ◽  
Author(s):  
C. Ayrault ◽  
J.S. Chang ◽  
D. Ewing ◽  
J.S. Cotton ◽  
I.E. Gerges ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Gas Chromatography ◽  
Differential Thermal Analysis ◽  
Solid Phase ◽  
Diesel Soot ◽  
Gravimetric Analysis ◽  
Solid Phase Micro Extraction ◽  
Thermal Gravimetric ◽  
Chromatography Analysis ◽  
Gas Chromatography Analysis

scholarly journals Headspace solid-phase microextraction procedure for gas-chromatography analysis of toluene in urine

2008 ◽  
Vol 19 (6) ◽  
pp. 1201-1206 ◽  
Author(s):  
Diego C. Netto ◽  
Rafael M. Reis ◽  
Camila B. Mendes ◽  
Paulo C. F. L. Gomes ◽  
Isarita Martins ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Headspace Solid Phase Microextraction ◽  
Chromatography Analysis ◽  
Gas Chromatography Analysis

scholarly journals Solid-phase microextraction of benzophenones coupled with gas chromatography analysis

2016 ◽  
Vol 4 (2) ◽  
pp. 55-62
Author(s):  
Valentyna Levchyk ◽  
M. Zui
Keyword(s):  
Gas Chromatography ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Enrichment Factors ◽  
Chromatography Analysis ◽  
Fiber Coating ◽  
Flame Ionization ◽  
Gas Chromatography Analysis ◽  
Relative Standard ◽  
Ph Range

In this study, solid-phase microextraction method combines with gas chromatography-flame ionization detector. The proposed method is used for the preconcentration of some benzophenones. Influence of different factors on the efficiency of extraction is described in detail. The analytical procedure was optimized for fiber coating selection, extraction time, temperature, sample pH, ionic strength. For all benzophenones, the highest enrichment factors were achieved using carboxen/polydimethylsiloxane/divinylbenzene fibre immersed directly into the water samples, containing 100 mg/mL of sodium chloride, at room temperature. The optimum pH range is 5.0 – 7.0. The relative standard deviations (RSDs) were from 1.3 to 10.0 % (n = 3). The method was applied to the determination of benzophenone, benzophenone-3, 2-hydroxybenzophenone in the lake water and urine.

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