title: Fluoride content and distribution pattern in groundwater of eastern Yunnan and western Guizhou, China.
abstract: For study, the fluoride (F) content and distribution pattern in groundwater of eastern Yunnan and western Guizhou fluorosis area in southwestern China, the F content of 93 water samples [groundwater (fissure water, cool spring, and hot springs), rivers water] and 60 rock samples were measured. The result shows the F content of the fissure water and cold spring water is 0.027-0.47 mg/L, and river water is 0.048-0.224 mg/L. The F content of hot spring water is 1.02-6.907 mg/L. The drinking water supplied for local resident is mainly from fissure water, cool spring, and river water. And the F content in all of them is much lower than the Chinese National Standard (1.0 mg/L), which is the safe intake of F in drinking water. The infected people in eastern Yunnan and western Guizhou fluorosis area have very little F intake from the drinking water. The hot spring water in fluorosis area of eastern Yunnan and western Guizhou, southwest China has high F content, which is not suitable for drinking.
authors.affiliation: Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China. kunliluo@sohu.com
authors.forename: Kunli
authors.initials: K
authors.lastname: Luo
authors.forename: Yonglin
authors.initials: Y
authors.lastname: Liu
authors.forename: Huijie
authors.initials: H
authors.lastname: Li
mesh_terms: D002118:Calcium / Q000032:analysis; D002681:China / Q000453:epidemiology; D060766:Drinking Water / Q000032:analysis* / Q000737:chemistry; D004781:Environmental Exposure; D005459:Fluorides / Q000032:analysis*; D009050:Fluorosis, Dental / Q000209:etiology; D019015:Geologic Sediments / Q000737:chemistry; D060587:Groundwater / Q000032:analysis* / Q000737:chemistry; D006868:Hydrolysis; D017736:Ion-Selective Electrodes; D045483:Rivers / Q000737:chemistry*
chemical_list: D060766:Drinking Water; D005459:Fluorides; D002118:Calcium