High levels of monoaromatic compounds limit the use of solid-phase microextraction of methyl tert-butyl ether and tert-butyl alcohol

Article Abstract:

A headspace method is used to study groundwater from 74 service stations and 670 monitoring wells in the northeastern United States, instead of a solid-phase microextraction (SPME) method, as it is determined that water samples with high levels of aromatic compounds give artificially low measurements of BTEXsTMBs when studied with the SPME method. Purge-and-trap GC/MS, and static headspace GC/MS methods are preferred to the SPME method.

United States, Gasoline Stations, Gasoline service stations, Water Pollution, Service stations (Automotive), Petroleum industry, Gasoline industry, Aromatic compounds

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Comparison of an individual cogener standard and a technical mixture for the quantification of toxaphene in environmental matrices by HRGC/ECNI-HRMS

Article Abstract:

Two standards for toxaphene profiling are compared for accuracy, using cogeners and high-resolution gas chromatography/electron capture negative ion high-resolution spectrometry. The insecticide toxaphene's congeners are graphed according to the technical standard and the Promochem standard.

Canada, Pesticide and Other Agricultural Chemical Manufacturing, Pollution Control, Agricultural chemicals, not elsewhere classified, Sanitary Services, Toxaphene, Chemical industry, Pesticides industry

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