Feasibility of detection and quantification of gas-phase carbonyls in indoor environments using PFBHA derivatization and solid-phase microextraction (SPME)

2008 ◽  
Vol 10 (7) ◽  
pp. 853 ◽  
Author(s):  
Bruce D. Pacolay ◽  
Jason E. Ham ◽  
James E. Slaven ◽  
J. R. Wells
Keyword(s):  
Gas Phase ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Indoor Environments ◽  
Detection And Quantification

Use of solid-phase microextraction to detect and quantify gas-phase dicarbonyls in indoor environments

2006 ◽  
Vol 1131 (1-2) ◽  
pp. 275-280 ◽  
Author(s):  
Bruce D. Pacolay ◽  
Jason E. Ham ◽  
J.R. Wells
Keyword(s):  
Gas Phase ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Indoor Environments

scholarly journals Determination of multi-class herbicides in soil by liquid-solid extraction coupled with headspace solid phase microextraction method

2016 ◽  
Vol 81 (8) ◽  
pp. 923-934 ◽  
Author(s):  
Rada Djurovic-Pejcev ◽  
Tijana Djordjevic ◽  
Vojislava Bursic
Keyword(s):  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Soil Samples ◽  
Gas Chromatography Mass Spectrometry ◽  
Optimum Number ◽  
Polydimethyl Siloxane ◽  
Headspace Solid Phase Microextraction ◽  
Relative Standard ◽  
Detection And Quantification

A method is described for simultaneous determination of five herbicides (metribuzin, acetochlor, clomazone, oxyfluorfen and dimethenamid) belonging to different pesticides groups in soil samples. Developed headspace solid phase microextraction method (HS-SPME) in combination with liquid-solid sample preparation (LS) was optimized and applied in the analysis of some agricultural samples. Optimization of microextraction conditions, such as temperature, extraction time and sodium chloride (NaCl) content was perfor-med using 100 ?m polydimethyl-siloxane (PDMS) fiber. The extraction effi-ciencies of methanol, methanol:acetone=1:1 and methanol:acetone:hexane= =2:2:1 and the optimum number of extraction steps during the sample prepa-ration, were tested, as well. Gas chromatography-mass spectrometry (GC-MS) was used for detection and quantification, obtaining relative standard deviation (RSD) below 13%, and recovery values higher than 83% for multiple analyses of soil samples fortified at 30 ?g kg-1 of each herbicide. Limits of detection (LOD) were less than 1.2 ?g kg-1 for all the studied herbicides.

scholarly journals Carbon and Tin-Based Polyacrylonitrile Hybrid Architecture Solid Phase Microextraction Fiber for the Detection and Quantification of Antibiotic Compounds in Aqueous Environmental Systems

Molecules ◽  
2019 ◽  
Vol 24 (9) ◽  
pp. 1670 ◽  
Author(s):  
Sandip Mondal ◽  
Jialing Jiang ◽  
Yin Li ◽  
Gangfeng Ouyang
Keyword(s):  
Solid Phase Microextraction ◽  
Tin Dioxide ◽  
Limit Of Detection ◽  
Solid Phase ◽  
Tap Water ◽  
Coefficient Of Determination ◽  
Lower Amount ◽  
Custom Made ◽  
Relative Standard ◽  
Detection And Quantification

In this study, the detection and quantification of multiple classes of antibiotics in water matrices are proposed using a lab-made solid phase microextraction (SPME) fiber coupled with high-performance liquid chromatography-tandem mass spectrometry (LC-MS/MS). The lab-made fiber was prepared using a graphene oxide (G), carbon nanotubes (C), and tin dioxide (T) composite, namely GCT, with polyacrylonitrile (PAN) as supporting material. The detected antibiotics were enrofloxacin, sulfathiazole, erythromycin, and trimethoprim. The custom-made fiber was found to be superior compared with a commercial C18 fiber. The excellent reproducibility and lower intra-fiber relative standard deviations (RSDs 1.8% to 6.8%) and inter-fiber RSDs (4.5% to 8.8%) made it an ideal candidate for the detection of traces of antibiotics in real environmental samples. The proposed validated method provides a satisfactory limit of detection and good linear ranges with higher (>0.99) coefficient of determination in the aqueous system. Application of the method was made in different real water systems such as river, pond and tap water using the standard spiking method. Excellent sensitivity, reproducibility, lower amount of sample detection and higher recovery was found in a real water sample. Therefore, the extraction method was successfully applied to the detection and quantification of multiple classes of antibiotics in different aqueous systems with satisfactory results.

Determination of acrylamide in potato-based foods using headspace solid-phase microextraction based on nanostructured polypyrrole fiber coupled with ion mobility spectrometry: a heat treatment study

2017 ◽  
Vol 9 (35) ◽  
pp. 5127-5134 ◽  
Author(s):  
Elham Pourmand ◽  
Elham Ghaemi ◽  
Naader Alizadeh
Keyword(s):  
Heat Treatment ◽  
Ion Mobility Spectrometry ◽  
Ion Mobility ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Food Samples ◽  
Headspace Solid Phase Microextraction ◽  
Heat Treated ◽  
Detection And Quantification

In this work, headspace solid-phase microextraction (HS-SPME) coupled with ion mobility spectrometry (IMS) has been used as a simple and convenient method for acrylamide detection and quantification in heat treated food samples.

scholarly journals Volatile Terpenes and Terpenoids from Workers and Queens of Monomorium chinense (Hymenoptera: Formicidae)

Molecules ◽  
2018 ◽  
Vol 23 (11) ◽  
pp. 2838 ◽  
Author(s):  
Rui Zhao ◽  
Lihua Lu ◽  
Qingxing Shi ◽  
Jian Chen ◽  
Yurong He
Keyword(s):  
Mass Spectrometry ◽  
Gas Phase ◽  
Solid Phase Microextraction ◽  
De Novo ◽  
Solid Phase ◽  
Mandibular Glands ◽  
Headspace Solid Phase Microextraction ◽  
Unknown Structure ◽  
Volatile Terpenes

Twenty-one volatile terpenes and terpenoids were found in Monomorium chinense Santschi (Hymenoptera: Formicidae), a native Chinese ant, by using headspace solid-phase microextraction (HS-SPME) coupled with gas-phase chromatography and mass spectrometry (GC-MS), which makes this ant one of the most prolific terpene producers in insect. A sesquiterpene with unknown structure (terpene 1) was the main terpene in workers and neocembrene in queens. Terpenes and terpenoids were detected in poison, Dufour’s and mandibular glands of both workers and queens. Worker ants raised on a terpene-free diet showed the same terpene profile as ants collected in the field, indicating that de novo terpene and terpenoid synthesis occurs in M. chinense.

Gas-Phase Analysis of Trimethylamine, Propionic and Butyric Acids, and Sulfur Compounds Using Solid-Phase Microextraction

2002 ◽  
Vol 74 (5) ◽  
pp. 1054-1060 ◽  
Author(s):  
Hyunook Kim ◽  
Cristina Nochetto ◽  
Laura L. McConnell
Keyword(s):  
Gas Phase ◽  
Phase Analysis ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Sulfur Compounds
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