Fluoride levels in well-water from a chronic arsenicism area of Northern Mexico

Albores, 1979, Estudio comparativo de hidroarsenicismo crónico en dos comunidades rurales de la Región Lagunera de México, Bol. Of. Sanit. Panam., 86, 196 Cebrián, 1983, Chronic arsenic poisoning in the North of Mexico, Human Toxicol., 23, 121, 10.1177/096032718300200110 Cheam, 1980, Preservation of inorganic arsenic species at microgram level in water samples, The Analyst, 105, 737, 10.1039/an9800500737 Dean, 1937, Further studies on the minimal threshold of chronic endemic fluorosis, Public Health Rep., 52, 1249, 10.2307/4582298 De Bruin, 1976, Biochemical Toxicology of Environmental Agents, 471 De Bruin, 1976, Biochemical Toxicology of Environmental Agents, 1213 Del Razo, 1990, The oxidation states of arsenic in well water from a chronic arsenicism area of northern Mexico, Environ. Pollut., 64, 143, 10.1016/0269-7491(90)90111-O Diario Oficial de la Federación (1990). Tomo CDXII, No. 11, México D.F. Galagan, 1957, Determining optimum fluoride concentrations, Public Health Rep., 72, 491, 10.2307/4589807 García-Salcedo, 1984, Estudio transversal de una cohorte de pacientes con vasculopatía por intoxicación crónica arsenical en poblados de los municipos de Francisco I. Madero y San Pedro, Coah, México, Rev. Fac. Med. (Torreón), 1, 12 García-Vargas, 1991, A pilot study on the urinary excretion of porphyrins in human populations chronically exposed to arsenic in México, Hum. Exp. Toxicol., 10, 189, 10.1177/096032719101000307 IARC, 1982, Some aromatic amines, anthraquinones and nitroso compounds, and inorganic fluorides used in drinking-water and dental preparations, Vol. 27, 236 Misra, 1988, Endemic fluorosis presenting cervical cord compression, Arch. Environ. Health, 43, 18, 10.1080/00039896.1988.9934368 Orion Research, 1983, Fluoride Electrodes, Instruction Manual, Form IM 94, 96/3821 Secretaría de Salud, 1986 Sholtes, 1973, Evaluation and Modification of Fluoride Sampling and Analytical Methods, 84 Singh, 1961, Endemic fluorosis. Epidemiological, clinical and biochemical study of chronic fluorine intoxication in Punjab (India), Medicine, 42, 229, 10.1097/00005792-196305000-00003 USEPA, 1979, Methods for chemical analysis of water wastes. Fluoride, 340 Webb, 1966, Vol. 3, 622 WHO, 1984 WHO, 1984, Guidelines for Drinking Water Quality, Vols 1 and 2 Woods, 1978, Altered regulation of mammalian hepatic heme biosynthesis and urinary porphyrin excretion during prolonged exposure to sodium arsenate, Toxicol. Appl. Pharmacol., 43, 361, 10.1016/0041-008X(78)90015-7