quadrupole GC-MS Articles
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Analysis of Organophosphorus Pesticides in Baby Foods Using a Triple-Quadrupole GC/MS/MS System
Contamination of food products with pesticides is a growing concern because of recognized adverse health effects, increasing world-wide usage of pesticides, and increasing imports of raw foodstuffs from foreign sources. The concern is particularly acute for baby foods because of the high vulnerability of babies to adverse health effects from synthetic chemicals, particularly pesticides. ...
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Analysis of Pesticides in Citrus Oil Using a Shimadzu GCMS-TQ8030
Contamination of consumer products with pesticides is a growing concern because of recognized adverse health effects, increasing world-wide usage of pesticides, and imports of raw materials from foreign sources. Citrus oils have been used for centuries for a wide range of applications: flavor/fragrance, various medicinal purposes, and others. In recent years, new uses of citrus oils as cleaners ...
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Analysis of Aroclor and Organochlorine Pesticides in Ground Water using Triple Quadrupole GC-MS/MS
USEPA method 608 is a GC-ECD method to determine Aroclor and organochlorine pesticides. This method requires the use of second column for confirming the detected compounds due to the low selectivity of the ECD detector compared with GC-MS/MS. Also pattern recognition is required for accurate identification of Aroclors. A triple quadrupole GC-MS/MS based method offers a solution for the GC-ECD ...
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Analysis of Pesticides in Baby Foods Using a GCMS-TQ8030 GC/MS/MS, Part II
Contamination of food products with pesticides is a growing concern because of recognized adverse health effects, increasing world-wide usage of pesticides, and increasing imports of raw foodstuffs from foreign sources. The concern is particularly acute for baby foods because of the high vulnerability of babies to health effects from synthetic chemicals such as pesticides. Gas chromatography ...
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Determination of Organochlorine Pesticides and Polychlorinated Biphenyls Using GC/MS/MS Operated in the MRM Mode
This paper describes use of a triple quadrupole GC/MS/MS method using Multiple Reaction Monitoring (MRM) mode for sensitive and selective detection and quantitation of Organochlorine pesticides and PCBs. A database with optimized MRM transitions for all of the OCPs and PCBs, including relative retention times for all components, makes method setup possible within minutes. The use of GC/MS/MS MRM ...
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Chlorination by-products of fenitrothion
The mutagens produced through chemical reaction between chlorine and the insecticide fenitrothion were studied by using a quadrupole GC-MS. The mutagenicity and the mutagen formation potential (MFP) of the identified by-products were evaluated by the Ames assay (preincubation method) using Salmonella typhimurium TA100 without exogenous activation by S9 mix (TA100-S9). Before conducting GC/MS ...
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Low-level Drinking Water Analysis of 1,2,3-Trichloropropane by Purge and Trap Concentration and GC/MS
Abstract 1,2,3-Trichloropropane (TCP) is a common industrial solvent with applications as a paint and varnish remover, degreasing agent, and an intermediate in pesticides. The California Department of Public Health recognizes TCP as a carcinogen with a notification level of 0.005 µg/L in drinking water.1 For low level drinking water analysis of volatile organic compounds (VOCs), the USEPA ...
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UCMR 3 Low-Level VOC Analysis by Purge and Trap Concentration and GC/MS using Selective Ion Monitoring
Abstract The United States Environmental Agency (USEPA) has established the Unregulated Contaminant Monitoring Program to collect data for contaminants suspected to be present in drinking water.1 The USEPA is currently proposing Unregulated Contaminant Monitoring Rule 3 (UCMR 3) which will collect data from January 2013 through December 2015. Because of the impact on public health and safety, it ...
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GC-MS/MS analysis of PAH and PCB in environmental samples
The polychlorinated biphenyls (PCB) and polyaromatic hydrocarbons (PAH) are among the most commonly analysed compound classes in environmental analysis. This article demonstrates how hydrogen carrier gas can be used in place of helium for GC-MS/MS analysis of these compounds. Analysis of polyaromatic hydrocarbons (PAH) is typically conducted using HPLC with UV- and fluorescence detection. ...
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Meeting the expanding needs of global food testing: Analysis of pesticides in vegetable matrix using triple quadrupole GC-MS/MS
Globally ensuring the reliability of food onour table with food testing solutions. Globalization of food supplies has renderedfood testing a major challenge for manufacturersand other businesses; contamination and spoilingincidents have fuelled media coverage, as well asraising consumer concerns. Government andregulatory agencies such as the European Commission (EU), the US Food and Drug ...
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Solid-phase extraction and gas chromatography-tandem mass spectrometry method for the simultaneous determination of several pesticides in water
Contamination of surface and groundwater sources with pesticide residues has been of great concern for a long time and it is a major challenge for the preservation and sustainability of the environment. In order to accomplish the requirements of the European Directive 98/83/EC, we developed and validated an analytical method based on the combination of gas chromatography and tandem quadrupole ...
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Passive sampling for target and non‐target analyses of moderately polar and nonpolar substances in water
The applicability of silicone rubber and low density polyethylene (LDPE) as passive sampling materials for target and non‐target analyses of moderately polar and non‐polar substances was assessed through a field deployment of samplers along a small polluted stream in Oslo (Norway). Silicone and LDPE samplers of identical surface area (but different volumes) were deployed at six sites in the ...
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A comparison of two solid phase extraction methods for the analysis of Polyaromatic Hydrocarbons in butter
Background Polyaromatic hydrocarbons (PAHs) are ubiquitous in the environment, resulting from both natural and manmade sources of combustion. Farm animals, such as cows, can become exposed to them through both consumption of contaminated feed and water, and inhalation of contaminated atmosphere1. Consequently, these compounds can be present in dairy products produced from cow’s milk such ...
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Shimadzu Guide to US EPA Method 8260 for analysis of volatile organic compounds in groundwater and solid waste
Environmental contamination has been at the forefront of government policy and regulation since the US EPA was established in 1970. Over the years the US EPA has developed, published, and updated multiple methods for analysis of environmental pollutants, and single-quadrupole gas chromatography-mass spectrometry (GC/MS) has long been the technique of choice for determination of volatile organic ...
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EPA Method 8270D Analysis Using Narrow-bore GC Columns and Fast Data Acquisition with a Quadrupole GCMS System - Case Study
Analytical support of environmental programs has been conducted for several decades using standard-bore capillary columns (0.25mmid) and quadrupole GCMS systems. Depending on method conditions and program requirements, the QC measures can consume a significant portion of a 12-hour shift, leaving less time for analysis of real-world samples. Typical cycle times (time from beginning of a run to the ...
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Developpement of on-line and field dual TD GC – MS for automatic VOC monitoring on petrochemical sites
Significance of the Research: Ambient air is polluted by many VOCs coming from Petrochemical Industry. PAMS, Oxygenated or Halogenated VOCs can be found in many ranges of concentration between background and site fence line. These compounds are precursors of ozone and Industrial bodies need to identify them to be in compliance with the authorized limits and to improve their process. Objectives: ...
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GC-MS Analysis of Volatile Organic Compounds in Wastewater According to US EPA Method 624
Environmental contamination has been at the forefront of government policy and regulation since the US EPA was established in 1970. Over the years the US EPA has developed, published, and updated multiple methods for analysis of environmental pollutants, and single-quadrupole gas chromatography-mass spectrometry (GCMS) has long been the technique of choice for determination of volatile organic ...
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Development of on-line and field dual TD GC – MS for automatic VOC monitoring on petrochemical sites
Ambient air is polluted by many semi-Volatile and Volatile Organic Compounds (SVOCs and VOCs) coming from anthropogenic and natural sources. VOCs from PAMS, TO14 and TO15 lists can be measured in many ranges of concentration, from pg/m3 up to mg/m3 depending on the location of the measurements. Due to the large number of molecules, the complete separation of all compounds is difficult to perform ...
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Development of on-line and field dual TD GC – MS for automatic VOC monitoring on petrochemical sites
Ambient air is polluted by many semi-Volatile and Volatile Organic Compounds (SVOCs and VOCs) coming from anthropogenic and natural sources. VOCs from PAMS, TO14 and TO15 lists can be measured in many ranges of concentration, from pg/m3 up to mg/m3 depending on the location of the measurements. Due to the large number of molecules, the complete separation of all compounds is difficult to perform ...
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Development of on-line and field dual TD GC – MS for automatic VOC monitoring on petrochemical sites
Ambient air is polluted by many semi-Volatile and Volatile Organic Compounds (SVOCs and VOCs) coming from anthropogenic and natural sources. VOCs from PAMS, TO14 and TO15 lists can be measured in many ranges of concentration, from pg/m3 up to mg/m3 depending on the location of the measurements. Due to the large number of molecules, the complete separation of all compounds is difficult to perform ...
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