Determination of Trace Metals, Volatile Organic Compounds, and Other Water Standards in WMU Drinking Water
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Purge and Trap GC-MS Determination of Trace Volatile Compounds in Drinking Water Using the HP 5973 Series MSD and Volatiles Interface (5965-8105E)
A system of purge and trap (P&T), gas chromatography (GC), and mass spectrometry (MS) was used to determine 84 volatile organic compounds at the ppt (parts per trillion) level targeted by EPA method 524.2. This was accomplished without the use of cryofocusing. The optimized system consisted of an HP 7695 P&T concentrator and autosampler; an HP 6890 Series GC with a volatiles interface (VI); a w...
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The volatile and polar solvent 1,4-dioxane has recently been reported as a contaminant of ground and surface waters, establishing the need to determine this substance in drinking water. This investigation established that 1,4-dioxane can be determined in water by various techniques including direct aqueous injection (DAI) gas chromatography (GC) and purge and trap GC-mass spectrometry (MS). Pur...
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A new analytical method for the determination of halogenated and aromatic volatile organic compounds in groundwater, mineral water, and drinking water at concentrations ranging between 1-10000 ng/L is developed. A new type of headspace sampler that combines static headspace sampling with a trap is used, yielding very low detection limits and good repeatability without carryover effects. An unex...
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National Water-Quality Assessment (NAWQA) Program collected or compiled data on ground water from 1926 private wells in rural areas across the United States from 1986 to 1999. These private wells, also called domestic wells, are owned and operated by the homeowners and provide water for household uses, including drinking, food preparation, watering lawns and gardens, bathing, and washing clothe...
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This paper surveys the needs associated with environmental monitoring and longterm environmental stewardship. Emerging sensor technologies are reviewed to identify compatible technologies for various environmental monitoring applications. The contaminants that are considered in this report are grouped into the following categories: (1) metals, (2) radioisotopes, (3) volatile organic compounds, ...
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