Tandem sulfur chemiluminescence and flame ionization detection with planar microfluidic devices for the characterization of sulfur compounds in hydrocarbon matrices

Luong, Jim; Gras, Ronda; Shellie, Robert A.; Cortes, Hernan J.

doi:10.1016/j.chroma.2013.04.080

Cited by 12 publications

(13 citation statements)

References 25 publications

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“…A recent communication by Luong et al. describes a configuration similar to this work, where Deans switching and DB‐1HT and VF‐1 GC columns are used to characterize multiple sulfur compounds in light and middle distillates . This method has the advantage of characterizing an extended range of sulfur components, including H 2 S, but is somewhat more complicated, with two planar microfluidic devices to control and program rather than the single device used in the present work.…”

Section: Introductionmentioning

confidence: 99%

A multidimensional gas chromatography method for the analysis of hydrogen sulfide in crude oil and crude oil headspace

Heshka

Hager

2014

J of Separation Science

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Two-dimensional heart-cutting gas chromatography is used to analyze dissolved hydrogen sulfide in crude samples. Liquid samples are separated first on an HP-PONA column, and the light sulfur gases are heart-cut to a GasPro column, where hydrogen sulfide is separated from other light sulfur gases and detected with a sulfur chemiluminescence detector. Heart-cutting is accomplished with the use of a Deans switch. Backflushing the columns after hydrogen sulfide detection eliminates any problems caused by high-boiling hydrocarbons in the samples. Dissolved hydrogen sulfide is quantified in 14 crude oil samples, and the results are shown in this work. The method is also applicable to the analysis of headspace hydrogen sulfide over crude oil samples. Gas hydrogen sulfide measurements are compared to liquid hydrogen sulfide measurements for the same sample set. The chromatographic system design is discussed, and chromatograms of representative gas and liquid measurements are shown.

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Section: Introductionmentioning

confidence: 99%

A multidimensional gas chromatography method for the analysis of hydrogen sulfide in crude oil and crude oil headspace

Heshka

Hager

2014

J of Separation Science

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“…For the environmental H 2 S, various detection technologies are available. The planar microfluidic devices in a novel chromatographic, single analytical configuration were used for sulphur analysis with a sulphur chemiluminescence detector (Luong, Gras, Shellie, & Cortes, ). A micro‐gas analysis system comprised of a microchannel scrubber and a high‐sensitivity small fluorescence detector was used for continuous and highly sensitive on‐site measurement of atmospheric gases such as H 2 S and SO 2 gases (Ohira & Toda, ; Toda, Ohira, & Ikeda, ).…”

Section: Introductionmentioning

confidence: 99%

Lab‐on‐a‐chip for hydrogen sulphide detection—Part I: Sulphide separation from plasma sample

et al. 2019

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Hydrogen sulphide (H 2 S) has emerged as an important signalling molecules due to its unique physiological and pathophysiological role in biological systems. H 2 S can be used as a biomarker for various diseases such as inflammation, cancer, cardiovascular, neurological and gastrointestinal disease. In this work, we report H 2 S chip which is designed for separation of all pools of H 2 S from plasma samples. The chip has been designed, fabricated and characterized. It operates with liberation, separation and trapping of H 2 S from plasma introduced to the chip.It consists of three distinct layers of polydimethylsiloxane (PDMS) structures which were bonded using 3M™ Transfer Tape. The releasing layer provides reaction surface for the liberation of H 2 S from the plasma sample. Releasing buffers allow release of various pools of H 2 S, including free, acid-labile and total sulphide. A silicone membrane is sandwiched between releasing and trapping layer. It worked as a H 2 S selective membrane where gas diffusion takes place from the releasing layer to the trapping layer. The trapping layer is H 2 S collection chamber. The full-chip performance was successfully characterized by derivatization of sulphide with excess MBB and analysing fluorescent product, sulphide dibimane (SDB) using the reverse-phase high-performance liquid chromatography (RP-HPLC) and fluorescence detection with eclipse XDB-C18 column. The sulphide transfer data showed 40% free sulphide, 38% acid-labile and 10% total sulphide transfer happens at 15 min. Performance of the chip was attributed to buffer, chip bonding technique and a silicon membrane that allows selective diffusion of hydrogen sulphide.

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“…43 For instance, many sulfur compounds are often separated using conventional non-polar (e.g. dimethylpolysiloxane) 13,15,17,[44][45][46][47][48] or polar (e.g. porous layer open tubular) 49 columns, and efforts to optimize their operating dimensions and conditions can increase separation efficiency.…”

Section: Introductionmentioning

confidence: 99%

Analysis of sulfur compounds using a water stationary phase in gas chromatography with flame photometric detection

McKelvie

Thurbide

2017

Anal. Methods

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Tandem sulfur chemiluminescence and flame ionization detection with planar microfluidic devices for the characterization of sulfur compounds in hydrocarbon matrices

Cited by 12 publications

References 25 publications

A multidimensional gas chromatography method for the analysis of hydrogen sulfide in crude oil and crude oil headspace

A multidimensional gas chromatography method for the analysis of hydrogen sulfide in crude oil and crude oil headspace

Lab‐on‐a‐chip for hydrogen sulphide detection—Part I: Sulphide separation from plasma sample

Analysis of sulfur compounds using a water stationary phase in gas chromatography with flame photometric detection

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