Results 21 to 30 of about 17,026 (247)

Portable comprehensive two-dimensional micro-gas chromatography using an integrated flow-restricted pneumatic modulator

Microsystems & Nanoengineering, 2022
Two-dimensional (2D) gas chromatography (GC) provides enhanced vapor separation capabilities in contrast to conventional one-dimensional GC and is useful for the analysis of highly complex chemical samples.
Xiaheng Huang, Maxwell Wei-hao Li, Wenzhe Zang, Xiaolu Huang, Anjali Devi Sivakumar, Ruchi Sharma, Xudong Fan   +6 more
doaj   +1 more source

Searching for Potential Markers of Glomerulopathy in Urine by HS-SPME-GC×GC TOFMS

Molecules, 2021
Volatile organic compounds (VOCs) exiting in urine are potential biomarkers of chronic kidney diseases. Headspace solid phase microextraction (HS-SPME) was applied for extraction VOCs over the urine samples.
Tomasz Ligor, Joanna Zawadzka, Grzegorz Strączyński, Rosa M. González Paredes, Anna Wenda-Piesik, Ileana Andreea Ratiu, Marek Muszytowski   +6 more
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Determination of 24 Organochlorine Pesticides and Pyrethroids in Complex Matrix Soils by Comprehensive Two-dimensional Gas Chromatography with Micro-electron Capture Detector

Yankuang ceshi, 2020
BACKGROUND Currently the analysis methods of organochlorine pesticides and pyrethroids in environment samples are gas chromatography and gas chromatography-mass spectrometry (GC-MS).
SHI Lei, SUN Yan-yan, SHEN Xiao-ming, LÜ Ai-juan, CAI Xiao-hu, LIU Jiao, SHEN Jia-lin   +6 more
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A review of the application of comprehensive two-dimensional gas chromatography MS-based techniques for the analysis of persistent organic pollutants and ultra-trace level of organic pollutants in environmental samples

Reviews in Analytical Chemistry, 2022
Analysis of complex samples in environmental matrices poses extreme challenge for analytical chemists as the number of known and unknown compounds are numerous and have varying physical and chemical properties.
Vaye Oliver, Ngumbu Rafael Sarji, Xia Dan   +2 more
doaj   +1 more source

Analysis of condensate oil by comprehensive two-dimensional gas chromatography

Petroleum Exploration and Development, 2012
Twenty-two condensate oil samples from the Sichuan Basin are analyzed by comprehensive two-dimensional gas chromatography (GC×GC). Light hydrocarbon components are separated completely without the influence of co-eluting peaks, and the fingerprint ...
Huitong WANG, Shuichang ZHANG, Na WENG, Wei LI, Shengfei QIN, Wenling MA   +5 more
doaj   +1 more source

Second dimension temperature programming system for comprehensive two-dimensional gas chromatography with true temperature control

Journal of Chromatography Open, 2022
A proof-of-concept second dimension (²D) temperature programming system for comprehensive two-dimensional gas chromatography (GC × GC) with true temperature control is introduced and its performance characterized.
Hei Yin J. Chow, Tadeusz Górecki
doaj   +1 more source

Cromatografia gasosa bidimensional abrangente (GC × GC) Comprehensive two-dimensional gas chromatography (GC × GC)

Química Nova, 2009
This paper presents the fundamental principles, instrumentation and selected applications of comprehensive two-dimensional gas chromatography (GC × GC).
Marcio Pozzobon Pedroso, Luiz Antonio Fonseca de Godoy, Carlos Henrique de Vasconcellos Fidélis, Ernesto Correa Ferreira, Ronei Jesus Poppi, Fabio Augusto   +5 more
doaj   +1 more source

A Data-Challenge Case Study of Analyte Detection and Identification with Comprehensive Two-Dimensional Gas Chromatography with Mass Spectrometry (GC×GC-MS)

Separations, 2019
This case study describes data analysis of a chromatogram distributed for the 2019 GC×GC Data Challenge for the Tenth Multidimensional Chromatography Workshop (Liege, Belgium).
Stephen E. Reichenbach, Qingping Tao, Chiara Cordero, Carlo Bicchi   +3 more
doaj   +1 more source

Comparison of gas and kerosene oils chemical composition before and after hydrotreating using comprehensive two-dimensional gas chromatography

Journal of Chromatography Open, 2022
Information on the detailed composition of the feedstock and product from the hydrotreating is essential for a better understanding of the reactions, possible optimization of the process conditions, development of new catalysts, and achieving a better ...
Lucie Šindelářová, Estella Ngoc Luu, Petr Vozka   +2 more
doaj   +1 more source

Specificity and selectivity improvement in doping analysis using comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry

Química Nova, 2012
Comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry was used for the identification of forty doping agents. The improvement in the specificity was remarkable, allowing the resolution of analytes that could not ...
Samantha S. Barbosa, Felipe D. Leal, Monica C. Padilha, Raphael S. F. Silva, Henrique Marcelo G. Pereira, Francisco R. Aquino Neto, Ademário I. da Silva Júnior   +6 more
doaj   +1 more source