Development of a fiber coating based on molecular sol–gel imprinting technology for selective solid-phase micro extraction of caffeine from human serum and determination by gas chromatography/mass spectrometry

2012 ◽  
Vol 727 ◽  
pp. 20-25 ◽  
Author(s):  
Afshin Rajabi Khorrami ◽  
Amene Rashidpur
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Human Serum ◽  
Solid Phase ◽  
Sol Gel ◽  
Gas Chromatography Mass Spectrometry ◽  
Solid Phase Micro Extraction ◽  
Fiber Coating ◽  
Chromatography Mass Spectrometry

scholarly journals Rapid Monitoring of Organochlorine Pesticides Residues in Various Fruit Juices and Water Samples Using Fabric Phase Sorptive Extraction and Gas Chromatography-Mass Spectrometry

2019 ◽  
Author(s):  
Ramandeep Kaur ◽  
Ripneel Kaur ◽  
Susheela Rani ◽  
Ashok Kumar Malik ◽  
Abuzar Kabir ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Organochlorine Pesticides ◽  
Solid Phase ◽  
Sol Gel ◽  
Gas Chromatography Mass Spectrometry ◽  
Sorptive Extraction ◽  
Chromatography Mass Spectrometry ◽  
Poly Ethylene

Fabric phase sorptive extraction, an innovative integration of solid phase extraction and solid phase microextraction principles, has been combined with gas chromatography-mass spectrometry for the rapid extraction and determination of nineteen organochlorine pesticides in various fruit juices and water samples. FPSE consolidates the advanced features of sol-gel derived extraction sorbents with the rich surface chemistry of cellulose fabric substrate, which could directly extract target analytes from complex sample matrices and substantially simplifies the sample preparation operation. Important FPSE parameters including sorbent chemistry, extraction time, stirring speed, type and volume of back-extraction solvent and back-extraction time have been optimized. Calibration curves were obtained in the concentration range 0.1-500 ng/mL. Under the optimum conditions, the limits of detection were obtained in the range 0.007-0.032 ng/mL with satisfactory precision (RSD<6%). The relative recoveries obtained by spiking organochlorine pesticides in water and selected juice samples were in the range of 91.56–99.83%. The sorbent sol-gel poly(ethylene glycol)-poly(propylene glycol)-poly(ethylene glycol) was applied for the extraction and preconcentration of organochlorine pesticides in aqueous and fruit juice samples prior to analysis with gas chromatography-mass spectrometry. The results demonstrated that the present method is simple, rapid, and precise for the determination of organochlorine pesticides in aqueous samples.

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