[Evaluation of the sanitary-and-epidemiological safety of flocculating agents used for portable water purification].
Polyelectrolytes used in the practice of water supply to the population were comparatively hygienically studied, by using a complex of hazard indices and a new approach to sanitary-and-epidemiological evaluation of the safety of water-soluble polymers is substantiated. The anionic and cationic flocculating agents from different chemical classes, such as Superflok A-100, Fennopol A 321E, Fennopol K 221E, Praestol 2530 TR, VPK-402, Superflok C-577, Saipan, KF-91, Ecosol-401, a low molecular-weight sodium polyacrylate were tested as model compounds. Moreover, the information already available in the scientific literature on the toxicity of synthetic polyelectrolytes was analyzed. The generalized maximum permissible concentrations were substantiated for individual chemical classes of synthetic polyelectrolytes: polyacrylamides, polyamines, polydiallyldimethylammonium chloride.
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D000180:Acrylic Resins / Q000494:pharmacology*; D005427:Flocculation; D005782:Gels; D006801:Humans; D006920:Hygiene; D012449:Safety; D018508:Water Purification / Q000379:methods*
D000180:Acrylic Resins; D005782:Gels; C006903:carbopol 940