Green solid-phase microextraction fiber coating based on the metal-organic framework CIM-80(Al): Analytical performance evaluation in direct immersion and headspace using gas chromatography and mass spectrometry for the analysis of water, urine and brewed coffee

2020 ◽  
Vol 1133 ◽  
pp. 137-149 ◽  
Author(s):  
Idaira Pacheco-Fernández ◽  
Manuel Rentero ◽  
Juan H. Ayala ◽  
Jorge Pasán ◽  
Verónica Pino
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Performance Evaluation ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Metal Organic Framework ◽  
Analytical Performance ◽  
Fiber Coating ◽  
Metal Organic ◽  
Direct Immersion

scholarly journals Solid Phase Microextraction–Gas Chromatography For The Analysis Of Explosives In Post Blast Water Samples

2012 ◽  
Author(s):  
Umi Kalthom Ahmad ◽  
Kee Heng Kiu
Keyword(s):  
Gas Chromatography ◽  
Water Samples ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Fiber Types ◽  
Qualitative And Quantitative Analysis ◽  
Salting Out ◽  
Fiber Coating ◽  
Stirring Effect ◽  
Direct Immersion

Dalam kajian ini, teknik pengekstrakan mikro fasa pepejal (SPME) diikuti dengan kromatografi gas (GC) telah digunakan untuk menentukan sisa letupan. Beberapa parameter termasuk masa penjerapan, masa dan suhu nyahjerapan, jenis gentian SPME, kesan pengadukan dan kesan garam telah dioptimumkan untuk mendapat data yang tepat. Penambahan 10% w/v NaCl dalam medium akues dan penggunaan gentian Carboxen/Polidimetilsiloksana (CAR/PDMS) menghasilkan pengekstrakan yang paling cekap. SPME/GC–ECD yang telah dioptimumkan digunakan untuk menganalisis sisa letupan 2,6–dinitrotoluena (2,6–DNT), trinitrotoluena (TNT) dan pentaeritritol tetranitrat (PETN) berjaya dikesan daripada sampel air. SPME/GC–ECD secara rendaman langsung didapati kaedah yang menarik digunakan untuk menganalisis bahan letupan dalam sampel air pasca letupan secara kualitatif dan kuantitatif. Kata kunci: Bahan letupan, SPME rendaman langsung, GC–ECD, sampel air pasca letupan In this study, a solid–phase microextraction (SPME) technique followed by gas chromatography (GC) was used to determine explosive residues. Several parameters including adsorption time, desorption time and temperature, SPME fiber types, stirring effect and salting out effect were optimized to obtain reproducible data with good accuracy. Addition of 10% w/v of NaCl in the aqueous medium and the use of a Carboxen/Polydimethylsiloxane (CAR/PDMS) fiber coating led to optimal extraction efficiencies. The optimized SPME/GC–ECD method was applied to the trace analysis of explosive residues in water samples. 2,6–dinitrotoluene (2,6–DNT), trinitrotoluene (TNT) and pentaerythritol tetranitrate (PETN) were successfully detected from water samples. Direct Immersion SPME/GC–ECD was found to be an attractive technique for qualitative and quantitative analysis of explosives in post blast water samples. Key words: Explosives, direct immersion SPME, GC–ECD, post blast water samples

scholarly journals Direct immersion solid-phase microextraction with gas chromatography and mass spectrometry for the determination of specific biomarkers of human sweat in melted snow

2016 ◽  
Vol 39 (7) ◽  
pp. 1300-1309 ◽  
Author(s):  
Federico Dallo ◽  
Dario Battistel ◽  
Rossano Piazza ◽  
Jacopo Gabrieli ◽  
Jean-Jacques Filippi ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Human Sweat ◽  
Melted Snow ◽  
Direct Immersion
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