Among other problems, a leak in the roof was found to be a potential contaminant of samples on tables below.
Asbestos is a natural contaminant of the ore and poses a health risk when it becomes airborne and is inhaled.
Dioxin is a trace contaminant of Agent Orange and other herbicides; it is not the main ingredient.
Asbestos, which has been linked to lung cancer and other diseases, is a natural contaminant of vermiculite ore.
The Defense Department and the Environmental Protection Agency have squared off in a continuing dispute over the danger from a widespread contaminant of groundwater.
IN March, the Campaign for Safe Cosmetics reported finding formaldehyde and 1,4-dioxane, a trace contaminant of some chemicals used in cosmetics, detergents and shampoos, in 55 children's personal-care products.
To do that Dr Cui connected them to a battery and ran water containing E. coli, a common bacterial contaminant of water, through them.
B. subtilis is a common contaminant of laboratory cultures (it plagued Louis Pasteur in many of his experiments) and is often found on human skin.
Water-pollution experts throughout the United States are concerned over the fact that detergents are now a troublesome and practically universal contaminant of public water supplies, and that there is no practical way to remove them by treatment.
Pregnant women were not only exposed to 2, 4, 5-T but to low levels of a highly toxic contaminant of it, the dioxin known as TCDD, which is known to have severe toxic effects on laboratory animals, including miscarriages.
Dyes are considered as major contaminant of waste water quality.
