Fluoride: A naturally-occurring health hazard in drinking-water resources of Northern Thailand

Chuah, C. Joon; Lye, Han Rui; Ziegler, Alan D.; Wood, Spencer H.; Kongpun, Chatpat; Rajchagool, Sunsanee

doi:10.1016/j.scitotenv.2015.12.069

Cited by 67 publications

(27 citation statements)

References 33 publications

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“…Minerals such as micas (biotite, muscovite), amphiboles (hornblende) and fluorite (CaF2) are reported to be among the sources of fluorine in rocks [15,[26][27]. Biotite and hornblende are present in the granite bedrock at Bor Klueng and Ban Samorthong.…”

Section: Results and Discussion 1) Hydrochemistrymentioning

confidence: 99%

“…However, only hot springs in Chiang Mai (surface temperature >80 °C) were developed to produce electricity with a current production of 150-250 kWh a -1 , with new power plants under development [7,[11][12][13][14]. Previous studies of hot springs were focused on a naturally-occurring health hazard in drinkingwater resources in northern Thailand due to high fluoride content [15]. In southern Thailand (Ranong, Surat Thani and Phang Nga Provinces), hot springs were examined with geological and geophysical methods, e.g.…”

Section: Introductionmentioning

confidence: 99%

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Geochemical Characteristics of Three Hot Springs from Western Thailand

et al. 2020

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At present a total of 118 hot springs are distributed throughout Thailand. Several studies with a focus on high-temperature hot springs related to geothermal resources were conducted in the northern and southern parts of the country. Geochemical data, however; especially isotopes of medium-to-low temperature hot springs are still scarce. Geochemical water analyses and isotope studies can provide crucial information for the future economical development of the hot springs, such as reservoir temperature, water source and quality. This study aims to investigate the chemical composition and stable isotopes (δ18O, δD) of three hot spring waters from western Thailand; Hin Dad, Bor Klueng and Ban Samorthong (surface water temperatures of 40-50 °C). The chemical type of the hot spring waters from Ban Samorthong and Bor Klueng are alkaline-carbonate, while Hin Dad hot spring is a calcium-carbonate type with high amount of sulfate, which is related to bedrock. Based on the silica geothermometer, reservoir temperatures are 65-90 °C. The stable isotopes δ18O and δD of all hot spring waters suggest a recharge with meteoric waters. The three hot springs are well-known for public water recreation and health therapy. Bor Klueng, the least developed of the three hot springs is used by locals as a source of drinking water. Regarding toxic elements, Ban Samorthong hot spring has high fluoride (F-) (14.84 mg L-1); while Hin Dad hot spring shows concentrations of lead (Pb2+) (0.07 mg L-1) and Bor Klueng of Pb2+ (0.02 mg L-1), and F- (4.35 mg L-1) which are above drinking water limits and might lead to health problems. In conclusion, the examination of elemental compositions and stable isotopes (δ18O, δD) of the three hot springs contributes to a better understanding of reservoir temperatures and recharge and can be beneficial for the natural resource development of medium-low temperature hot springs in Thailand.

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Section: Results and Discussion 1) Hydrochemistrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Geochemical Characteristics of Three Hot Springs from Western Thailand

et al. 2020

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“…Fluoride is still important in preventing dental caries. However, overdose of fluoride ingestion increases the risk of dental fluorosis [4,5]. Dental fluorosis is a developmental tooth enamel disease caused by excessive intake with a high mineral concentration during the tooth development.…”

Section: Introductionmentioning

confidence: 99%

Removal of Fluoride from Groundwater by Batch Electrocoagulation Process Using Al Plate Electrodes

Karabulut¹,

Atasoy²

2019

acperpro

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Dental fluorosis cases are observed due to the high consumption of high fluoride drinking water in some parts of Anatolia. Fluorosis is resulted from high concentrations of fluoride in groundwater and observed in some regions of Turkey having volcanic rocks and geothermal fields. Results of fluoride analyses showed that the concentrations in groundwater samples were above the admissible limit values for potable water (>1.5 mg/L). Objectives of this work are; to study the high fluoride in groundwater of Sarım-Karataş region, its health effects and to examine its removal efficiency from groundwater by electrocoagulation (EC). EC process including the electrodes, reactor and the power source successfully removed the fluoride from groundwater sample. F removal rate was found as ~96% at the end of 3 hour.

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“…Diş çürüğünün önlenmesi ve kontrol edilmesinde ABD ve Kanada'nın 1945-1946 yıllarında gerçekleştirdikleri çalışmalar çok etkili olmuştur (20). Araştırmacılar florun çürümeyi önleyici etkisinin mineyi güçlendirerek diş minesinin bakteriler tarafından oluşturulan ve çürüğe neden olan asidin etkilerini önlemesi olarak bulmuşlardır (21). Florun yeniden mineralizasyona etkisi son derece önemlidir.…”

Section: Introductionunclassified

An Anthropological Evaluation on Fluorosis

Arıhan¹,

Türkekul²

2019

Van Med J

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Fluorine is found in nature in fluorine compounds and is a trace element in human body. Fluorine is found in water sources, soils, rocks, food and drinks and incorporated into structure of our skeleton and teeth. Geological activities, climatic conditions, physical and chemical rock properties alter fluorine content in soil. This condition causes alterations in fluorine level in both underground and surface water sources. Adequate consumption protects teeth from caries and bones against osteoporosis however, excessive intake c auses problems in teeth and bones. Acute or chronic excessive exposure to this element causes certain pathologies in different systems in human. Those pathological conditions are observed most frequently in hard tissues. Fluorine interacts with calcium which causes its dense accumulation in bones and teeth. Chronic excessive accumulation of fluorine causes mottling on teeth and deformations in bones and joints. Ancient populations exposed to fluorosis also have pathologies in teeth and bone samples. Aim of this study is to evaluate literature and assessment of present data and impacts of fluorine on human body in an anthropological perspective.

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Fluoride: A naturally-occurring health hazard in drinking-water resources of Northern Thailand

Cited by 67 publications

References 33 publications

Geochemical Characteristics of Three Hot Springs from Western Thailand

Geochemical Characteristics of Three Hot Springs from Western Thailand

Removal of Fluoride from Groundwater by Batch Electrocoagulation Process Using Al Plate Electrodes

An Anthropological Evaluation on Fluorosis

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