Simple derivatization prior to stir bar sorptive extraction to improve extraction efficiency and chromatography of hydrophilic analytes

2011 ◽  
pp. 47-62
Author(s):  
Ray Marsili
Keyword(s):  
Extraction Efficiency ◽  
Stir Bar Sorptive Extraction ◽  
Sorptive Extraction

Stir bar sorptive extraction and thermal desorption – gas chromatography/mass spectrometry for determining phosphorus flame retardants in air samples

2018 ◽  
Vol 10 (16) ◽  
pp. 1918-1927 ◽  
Author(s):  
Julius Matsiko ◽  
Honghua Li ◽  
Pu Wang ◽  
Huizhong Sun ◽  
Shucheng Zheng ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Flame Retardants ◽  
Extraction Efficiency ◽  
Single Step ◽  
Stir Bar Sorptive Extraction ◽  
Gas Chromatography Mass Spectrometry ◽  
Air Samples ◽  
Sorptive Extraction ◽  
Sample Extraction

A rapid, single step sample extraction and high extraction efficiency method for determining gaseous phase PFRs in air is demonstrated.

SOL-GEL (3-MERCAPTOPROPYL)TRIMETHOXYSILANE-METHYLTRIMETHOXYSILANE AS ADSORBENT FOR STIR BAR SORPTIVE EXTRACTION OF SELECTED ORGANIC DYES

2016 ◽  
Vol 78 (3-2) ◽  
Author(s):  
Nur Atiqah Abu Bakar ◽  
Wan Aini Wan Ibrahim ◽  
Mohd Marsin Sanagi
Keyword(s):  
Extraction Efficiency ◽  
Organic Dyes ◽  
Limit Of Detection ◽  
Sol Gel ◽  
Stir Bar Sorptive Extraction ◽  
Visible Spectroscopy ◽  
Sorptive Extraction ◽  
Hybrid Silica ◽  
Order Of Magnitude ◽  
Optimum Extraction

A new sol-gel hybrid silica-based (3-mercaptopropyl)trimethoxysilane-methyl-trimethoxysilane (MPTMOS-MTMOS) in the ratio of 3:1 was synthesized and applied as an adsorbent in stir bar sorptive extraction (SBSE) of three selected polar organic dyes from water sample. Three organic dyes were used as test analytes namely crystal violet, methyl orange and methylene blue. Analysis of the organic dyes was performed using ultraviolet-visible spectroscopy. Optimum extraction conditions was achieved using 50 min extraction time, 240 rpm stirring rate, ultrasonic aided desorption for 15 min using  3 mL methanol and sample solution at pH 4 with addition of 5% (w/v) NaCl. The sol-gel hybrid MPTMOS-MTMOS showed better extraction efficiency (based on absorbance) for the selected organic dyes compared to commercial ethylene-glycol/silicone Twister™ stir bar. Limit of detection obtained was in the range 0.34 -0.75 µg mL-1 (S/N = 3) and linear range achieved was 10 order of magnitude (1.0-10 µg mL-1). The developed sol-gel hybrid material showed high potential as an alternative adsorbent for SBSE of organic dyes. MPTMOS-MTMOS SBSE was successfully applied for simultaneous analysis of three organic dyes from river water with good recovery.

scholarly journals Stir bar sorptive extraction of aroma compounds in soy sauce: Revealing the chemical diversity

2021 ◽  
Vol 144 ◽  
pp. 110348
Author(s):  
Carmen Diez-Simon ◽  
Charlotte Eichelsheim ◽  
Doris M. Jacobs ◽  
Roland Mumm ◽  
Robert D. Hall
Keyword(s):  
Aroma Compounds ◽  
Chemical Diversity ◽  
Stir Bar Sorptive Extraction ◽  
Soy Sauce ◽  
Sorptive Extraction
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