Showing papers by "Thomas C. Voice published in 2004"
TL;DR: Soil-chemical contact time (aging) is an important determinant of the sorption and desorption characteristics of the organic contaminants and pesticides in the environment and it was found that when normalized to soil organic matter content, the concentration of atrazine in desorbable sites was relatively constant, whereas that in non-desorbable site increased.
50 citations
TL;DR: In this article, a screening methodology for detecting the presence of organic materials that leach into water from coal deposits was developed and evaluated, with the ability to detect 16 polynuclear aromatic hydrocarbons (PAHs) at the lowest practical levels.
Abstract: A screening methodology designed to detect the presence of organic materials that leach into water from coal deposits was developed and evaluated. Analytical objectives included the ability to detect 16 polynuclear aromatic hydrocarbons (PAHs) at the lowest practical levels, capability for fingerprint analysis of other compounds, and ease of use under remote field conditions. The approach developed involved drawing 1 L water samples through a styrene divinylbenzene-based solid-phase extraction cartridge by suction, elution of the cartridge with tetrahydrofuran/hexane, evaporative concentration of the eluent, and reconstitution in acetonitrile, followed by analysis using high-pressure liquid chromatography with ultraviolet absorption and fluorescence detectors. The method was found to be easy to use under field conditions, providing generally acceptable recoveries and, in most cases, lower detection limits than current regulatory methods. The ability to detect PAHs and other organic compounds in simulated ...
11 citations