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Dissolved gas analysis (DGA) is an examination of electrical transformer oil contaminants. [1] Insulating materials within electrical equipment liberate gases as they slowly break down over time. The composition and distribution of these dissolved gases are indicators of the effects of deterioration, such as pyrolysis or partial discharge , and ...
There is a need to analyze the dissolved gas content of aqueous solutions. Dissolved gases can directly interact with aquatic organisms [4] or can volatilize from solution (the latter described by Henry's law). These processes can result in exposure that, depending on the nature of the dissolved material, can have negative health effects.
Solid Waste Tree, Based on Resource Conservation and Recovery Act, United States Environmental Protection Agency. Solid waste means any garbage or refuse, sludge from a wastewater treatment plant, water supply treatment plant, or an air pollution control facility and other discarded material, including solid, liquid, semi-solid, or contained gaseous material resulting from industrial ...
Toxicity characteristic leaching procedure (TCLP) is a soil sample extraction method for chemical analysis employed as an analytical method to simulate leaching through a landfill. The testing methodology is used to determine if a waste is characteristically hazardous, i.e., classified as one of the "D" listed wastes by the U.S. Environmental ...
LECO carries out research in many fields of analytical chemistry including protein measurement in foods, sulfur in coal emissions, glow discharge emission in metals, multi-dimensional gas chromatograph mass spectrometry, environmental monitoring, air quality, Metabolomics, and diverse medical and pharmaceutical applications.
Soil gases (soil atmosphere [1]) are the gases found in the air space between soil components. The spaces between the solid soil particles, if they do not contain water, are filled with air. The primary soil gases are nitrogen, carbon dioxide and oxygen. [2] Oxygen is critical because it allows for respiration of both plant roots and soil ...
Soil particles can be classified by their chemical composition as well as their size. The particle size distribution of a soil, its texture, determines many of the properties of that soil, in particular hydraulic conductivity and water potential, [1] but the mineralogy of those particles can strongly modify those properties. The mineralogy of ...
As an ingredient in unleaded gasoline, MTBE is the most water-soluble component. When dissolved in groundwater, MTBE will lead the contaminant plume with the remaining components such as benzene and toluene following. Thus the discovery of MTBE in public groundwater wells indicates that the contaminant source was a gasoline release.