GENERAL INFORMATION Selenium is a metal found in natural deposits such as ores containing other elements. The greatest use of selenium compounds is in electronic and photocopier components, but they are also widely used in glass, pigments, rubber, metal a ...
GENERAL INFORMATION Nickel is a very abundant natural element and is often used in electroplating, stainless steel and alloy products. It generally gets into water from mining and refining operations. HEALTH EFFECTS Exposure of the general population from ...
GENERAL INFORMATION Cyanide is a carbon-nitrogen chemical unit which combines with many organic and inorganic compounds. The most commonly used form, hydrogen cyanide, is mainly used to make compounds and other synthetic fibers and resins. The major sourc ...
GENERAL INFORMATION Cadmium is a natural element in the earthÕs crust. It is usually found as a mineral combined with other elements such as oxygen (cadmium oxide), chlorine (cadmium chloride), or sulfur (cadmium sulfate, cadmium sulfide). All soils and r ...
GENERAL INFORMATION Copper is a metal found in natural deposits such as ores containing other elements. Copper is widely used in household plumbing materials. The major sources of copper in drinking water are corrosion of household plumbing systems; and e ...
GENERAL INFORMATION Chromium is an odorless and tasteless metallic element. Chromium is found naturally in rocks, plants, soil and volcanic dust, humans and animals. The most common forms of chromium that occur in natural waters in the environment are tri ...
GENERAL INFORMATION The gaseous or liquid form of chlorine (CL2) is a water additive used by municipal water systems to control microbes. It is relatively inexpensive and has the lowest production and operating costs and longest history for large continuo ...
GENERAL INFORMATION Beryllium naturally enters surface water and ground water through the weathering of rocks and soils or from industrial wastewater discharges. The major source of environmental releases from human activities are coal and fuel oil combus ...
GENERAL INFORMATION Bromide and chloride are both used as tracers to study water and solute transport through soils. They do not adsorb to negatively charged soil minerals, which allows them to move as fast as water through the soil. The main difference b ...
GENERAL INFORMATION Bromate is formed when ozone used to disinfect drinking water reacts with naturally occurring bromide found in source water. Bromate formation in disinfected drinking water is influenced by factors such as bromide ion concentration, pH ...