Drinking water mainly considers the impact on human health, and its water quality standards include physical and chemical indicators, as well as microbiological indicators. For industrial water, consider whether it affects product quality or is easy to damage containers and pipelines. It can be widely used in the determination of ion parameters in power plants, purified water plants, water supply plants, domestic sewage treatment plants, beverage factories, environmental protection departments, industrial water, aquatic industry, textile industry, wine industry and pharmaceutical industry, epidemic prevention department, hospital and other departments.
Water quality indicators
106 test indicators and instruments for water quality safety
The water quality indicators increased from 35 items in GB 5749-85 to 106 items, an increase of 71 items; 8 items have been revised; Among them:
The microbial indexes increased from 2 to 6, and the number of microbial indicators increased from Escherichia coli, heat-tolerant coliform bacteria, Giardia and Cryptosporidium. revised total coliform flora;
drinking water disinfectants increased from 1 to 4, and monochloramine, ozone, and chlorine dioxide were added; The number of inorganic compounds in the toxicological indexes increased from 10 to 21, and bromate, chlorite, chlorate, antimony, barium, beryllium, boron, molybdenum, nickel, thallium, and cyanochloride were added. and revised arsenic, cadmium, lead, nitrate;
The number of organic compounds in the toxicological indicators increased from 5 to 53, and formaldehyde, trihalomethane, dichloromethane, 1,2-dichloroethane, 1,1,1-trichloroethane, tribromomethane, monochlorodibrominemethane, dichloromonobromomethane, epichlorohydrin, vinyl chloride, 1,1-dichloroethylene, 1,2-dichloroethylene, trichloroethylene, tetrachloroethylene, hexachlorobutadiene, dichloroacetic acid, trichloroacetic acid, trichloroacetaldehyde, benzene, toluene, xylene, ethylbenzene, styrene, 2,4,6-trichlorophenol, chlorobenzene, 1,2- Dichlorobenzene, 1,4-dichlorobenzene, trichlorobenzene, di(2-ethylhexyl) phthalate, acrylamide, microcystin - LR, marquisone, chlorothalonil, deltamethrin, dimethrin, 2,4-drops, heptachlorobenzene, lindane, malathion, parathion, methylparathion, pentachlorophenol, atrazine, furandan, chlorpyrifos, dichlorvos, glyphosate; revised carbon tetrachloride;
Sensory traits and general physical and chemical indicators increased from 15 to 20, and oxygen consumption, ammonia nitrogen, sulfide, sodium, and aluminum were increased. revised turbidity;
The total α radioactivity has been revised in the radioactivity indicators.