Headspace solvent microextraction A new method applied to the preconcentration of 2-butoxyethanol from aqueous solutions into a single microdrop

Optimization of headspace single-drop microextraction technique for extraction of light hydrocarbons (C6–C12) and its potential applications

“…However, larger drops are difficult to manipulate and a large injection volume will lead to bad separation in the chromatography analysis. Therefore, a microdrop volume of 1-3 ll is usually used (Lambropoulou and Albanis, 2004;Yamini et al, 2004;Bahramifar et al, 2004). In this work, different drop volumes of n-hexadecane (1.0, 1.5, 2.0, and 2.5 ll) were used to examine the extraction efficiency of HS-SDME.…”

“…Moreover, unlike the fibers of SPME, drops of SPME can be renewed for each extraction. Therefore, this extraction technique has been widely applied in various fields and involved in a broad range of sample types, including human serum, pharmaceutical preparations, vegetables, engine oils, degradation products of asphaltenes as well as various water samples (Przyjazny and Kokosa, 2002;Kokosa and Przyjazny, 2003;Shariati-Feizabadi et al, 2003;Bahramifar et al, 2004;Lambropoulou and Albanis, 2004;Yamini et al, 2004;Shahdousti et al, 2007;Li et al, 2010).…”

Trace analysis of methyl tert-butyl ether in water samples using headspace solvent microextraction and gas chromatography–flame ionization detection

“…In our previous works [17,22,23] we introduced a cooling system for the microsyringe needle, in order to cool the microdrop. It is well known that the organic drop/sample distribution coefficient decreases with increasing microdrop temperature, which results in the decreased sensitivity of the extraction process.…”

A new application of headspace single-drop microextraction technique for compound specific carbon isotopic determination of gasoline range hydrocarbons

“…In contrast to P&T and SPME, it does not need a specific apparatus except for a microsyringe. It is suitable for the extraction of volatile and semi-volatile organic compounds and has been successfully applied in various fields (Przyjazny and Kokosa, 2002;Shariati-Feizabadi et al, 2003;Bahramifar et al, 2004;Lambropoulou and Albanis, 2004;Yamini et al, 2004;Tan et al, 2005). Recently, the work by Fang et al (2011) has proved that the HS-SDME method is a promising tool for the determination of volatile C 6 -C 12 light hydrocarbons in petroleum and aqueous samples.…”