Glycols are routinely used in industrial and domestic coolant systems to prevent system freeze-up, as industrial feed products, and as water removal systems in facilities such as gas plants. They are highly water soluble, non-volatile, and generally chemically inert. These chemicals may persist and be mobile while in the environment. The same is true of various alkanolamines used in sour gas plants. Alcohols can be found in food, industrial, and medical products and in domestic cleaning products. Due to their solubility they can present a hazard to water supplies and in food.

Alcohols in soil Includes:

• methanol, ethanol, butanol, iso-propanol, and pentanol water extraction, PQL ~ 2ppm, GC-FID

Amines in soil Includes:

• ethanolamine, di-isopropanolamine, diethanolamine, triethanolamine, methyldiethanolamine, and sulfolane

Glycols in soil Includes:

• ethlyene glycol, propylene glycol, diethylene glycol, triethylene glycol and tetraethylene glycol water:methanol extraction GC-FID

• HPLC-MS

Lower limits for amines (and glycols) are obtained by HPLC: shake with water, filter, analyze by HPLC-MS MDL ~0.1-0.3 ppm PQL ~ 0.5-2 ppm.