Recent Advances in Environmental Analysis

Direct quantification of aromatic hydrocarbons in geochemical fluids with a mid-infrared attenuated total reflection sensor

“…Recent advances in gas chromatography (GC) and mass spectrometry (MS) have been able to provide invaluable compositional information and in most cases the concentration of many different hydrocarbon components in complex samples can be easily obtained (Ballesteros-Gomez and Rubio, 2011). The determination of hydrocarbons in crude oils typically involves several steps such as the collection of a representative sample followed by extraction/ separation prior to molecular characterization and quantification using GC-MS (Audino et al, 2004).…”

Recent Applications of Comprehensive Two-Dimensional Gas Chromatography to Environmental Matrices

“…A non exhaustive review (Ballesteros- Gomez & Rubio, 2011) was focused on main developments and advances in environmental analysis reported over the period 2009-2010. www.intechopen.com…”

“…GC×GC is currently one of the most effective techniques for the separation and analysis of environmental samples, offering significantly greater peak capacities than conventional chromatographic methods. GC×GC provides three major benefits, namely, enhanced chromatographic separation, improved sensitivity by effect of cryofocusing with the thermal modulator, and chemical class ordering in the contour plot (Ballesteros- Gomez & Rubio, 2011). Research in GC×GC has recently shifted from instrumental development to application to real samples over the last four years especially with the coupling to MS. Nearly 83% of the over 110 research articles published (specify the type or classification of articles) in 2010 were devoted to applications of GC×GC (Edwards et al, 2011).…”

Jacket-free stir bar sorptive extraction with bio-inspired polydopamine-functionalized immobilization of cross-linked polymer on stainless steel wire

“…Sample pretreatment techniques are greatly useful for analysis of different kinds of compounds in complex matrices [1][2][3]. In recent years, polar compounds have been paid more and more attention for their wide presence in pharmaceutical, medical and biological samples [4,5]; however, the development of sample pretreatment methods for polar compouns are far behind of that for non-polar compouds.…”