Helium Supply Problem and GC-MS Carrier Gas

Geochemical Analysis: Gas Chromatography and Gc-ms

tional scanning of large genes by extensive PCR multiplexing and two-dimensional electrophoresis: application to the RB1 gene. Human Molecular Genetics 5: 755}761. van OrsouwNJ, Dhanda RK, Rines DR et al. (1998) Rapid design of denaturing gradient-based two-dimensional electrophoretic gene mutational scanning tests. Nucleic Acids Research 10: 2398}2406. Vijg J and van Orsouw NJ (1999) Two-dimen...

Chemical Analysis of Pesticides Using GC/MS, GC/MS/MS, and LC/MS/MS

There are well over 500 registered pesticides worldwide for use in agricultural regions and new agrochemicals are introduced to the marketplace continuously. This chapter deals with the chemical analysis methods for the main pesticide chemical classes that are most frequently analyzed with gas chromatography (GC) or liquid chromatography (LC) coupled to mass spectrometry (MS). GC amenable pesti...

Multi-Residue Analysis of Pesticides in Pistachio Using Gas Chromatography-Mass Spectrometry (GC/MS)

Background: Analysis of pesticide residues in food and other environmental commodities have become an essential requirement for consumers, producers, food inspectors and authorities. This study is focused on validation of an accurate, rapid and reliable method for multi-residual analysis of pesticides in pistachio as a strategic crop for export and one of the main nuts in Iranian food basket.Me...

Polymer Analysis Using Pyrolysis-GC-FTIR-MS and GC-AED

Selective and comprehensive analysis of organohalogen compounds by GC × GC–HRTofMS and MS/MS

Thousands of organohalogen compounds, including hazardous chemicals such as polychlorinated biphenyls (PCBs) and other persistent organic pollutants (POPs), were selectively and simultaneously detected and identified with simple, or no, purification from environmental sample extracts by using several advanced methods. The methods used were software extraction from two-dimensional gas chromatogr...