Development and validation of an improved, thin film solid phase microextraction based, standard gas generating vial for the repeatable generation of gaseous standards

2020 ◽  
Vol 1632 ◽  
pp. 461541
Author(s):  
Jonathan J Grandy ◽  
Khaled Murtada ◽  
João Raul Belinato ◽  
Paola Alejandra Ortiz Suárez ◽  
Janusz Pawliszyn
Keyword(s):  
Thin Film ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Development And Validation ◽  
Standard Gas

Microfluidic-enabled versatile hyphenation of electromembrane extraction and thin film solid phase microextraction

Talanta ◽  
2021 ◽  
Vol 224 ◽  
pp. 121864 ◽  
Author(s):  
Mina Alidoust ◽  
Yadollah Yamini ◽  
Mahroo Baharfar ◽  
Shahram Seidi ◽  
Fatemeh Rasouli
Keyword(s):  
Thin Film ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Electromembrane Extraction

Liquid–Solid Sample Preparation Followed by Headspace Solid-Phase Microextraction Determination of Multiclass Pesticides in Soil

2012 ◽  
Vol 95 (5) ◽  
pp. 1331-1337 ◽  
Author(s):  
Rada D Ðurović ◽  
Tijana M Ðorðević ◽  
Ljiljana R Šantrić
Keyword(s):  
Sample Preparation ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Extraction Procedure ◽  
Soil Samples ◽  
Optimum Number ◽  
Headspace Solid Phase Microextraction ◽  
Extraction Solvents ◽  
Development And Validation

Abstract This paper describes development and validation of a multiresidue method for the determination of five pesticides (terbufos, prochloraz, chloridazon, pendimethalin, and fluorochloridone) belonging to different pesticide groups in soil samples by GC/MS, followed by its application in the analysis of some agricultural soil samples. The method is based on a headspace solid-phase microextraction method. Microextraction conditions, namely temperature, extraction time, and NaCl content, were tested and optimized using a 100 μm polydimethylsiloxane fiber. Three extraction solvents [methanol, methanol–acetone (1 + 1, v/v), and methanol–acetone–hexane (2 + 2 + 1, v/v/v)] and the optimum number of extraction steps within the sample preparation stage were optimized for the extraction procedure. LOD values for all the studied compounds were less than 12 μg/kg. Recovery values for multiple analyses of soil samples fortified at 30 μg/kg of each pesticide were higher than 64%. The method was proven to be repeatable, with RSD lower than 15%.

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