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Water for GC-MS Analysis

Merck
16 Apr 2013

Read the featured application note to learn about new methods for generating ultrapure water that is free from volatile organic compounds and is suitable for sensitive applications such as purge-and-trap GC/MS.

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VOC-Pak™ Point-of-Use Polisher

Merck

The VOC Pak is designed to produce water with VOC concentration below the analytical detection limit. VOCs are industrial contaminants that may cause health safety issues and therefore should be detected in the environment. VOCs are routinely analyzed in water, soil, gas and air. Specifications for VOCs in drinking water have been established by different regulatory agencies in many countries.The VOC-Pak cartridge is designed to assure scientists performing VOC analysis that the ultrapure water they use to rinse glassware, produce standard solutions or dilute samples is VOC-free.Featured at EMD Millipore Pittcon 2014.VOC-Pak™ Point-of-Use Polisher Benefits: The VOC-Pak™ polisher is easily connected to the outlet of all EMD Millipore Type I water purification systems (Milli-Q®, Direct-Q®, Synergy® and Simplicity® systems) The final purification step provides VOC-free ultrapure water at high flow rate—when you need it Delivers a minimum of 300 l of VOC-free ultrapure water Validated for efficient removal of VOCs Each VOC-Pak™ cartridge is delivered with a Certificate of Quality

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Sample PreparationSample preparation can improve the quality and speed of separation techniques. Products to assist sample preparation include filtration equipment, evaporators, membranes and sieves.GC-MS GC-MS (gas chromatography-mass spectrometry) instruments and equipment are used to separate, quantify and identify mixtures of small and volatile compounds, such as polycyclic aromatics, fatty acids and alcohols. Often used in drug detection, forensic investigation and environmental analysis for pesticides and contaminants, GC-MS is a powerful addition to your lab’s analytical capabilities. GC-MS/MS instruments equipped with a qTOF or triple quadrupole analyzers can give greater sensitivity and resolution to your analysis. Find the best GC-MS instruments and equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Water PurificationThere are a number of water purification methods available to remove contamination from laboratory water. These systems include demineralization, reverse osmosis, filtration and ultrafiltration. A combination of methods is sometimes necessary to achieve purified water suitable for use in experiments.Ultrapure WaterUltrapure water is the highest purity water and contains the lowest levels of organic and inorganic contaminants, particulates and microorganisms.Water AnalysisAnalytical methods used to test the purity of drinking water include determining the level of contaminants abides to the level set by the Environmental Protection Agency (EPA).Semi Volatile Organic CompoundsSemi volatiles organic compounds (SVOCs) are a groups of compounds that have a low boiling point and evaporate above room temperature. SVOCs include phenols and polynuclear aromatic hydrocarbons (PAH).

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