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Online ServiceSummary data on coal-burning endemic fluorosis throughout china and on the exposure-response relationship between concentrations of fluoride determined in coal samples and the prevalence of dental fluorosis reported from 17 representative surveillance stations in southwest china were used to estimate the safety threshold for coal fluoride.
Chat OnlineSkeletal fluorosis from indoor burning of coal in southwestern china.Tuesday, march 11th, 2014 fluoride exposure from burning coal-clay in guizhou province, china.Sunday, february 16th, 2014 exploration for an early discriminant model of non-skeletal phase in endemic fluorosis exposed to coal-burning.Friday, february 7th, 2014.
More DetailsTo study the effect of fluorine on the oxidative stress in coal-burning fluorosis, we investigated the environmental characteristics of coal-burning endemic fluorosis combined with fluorine content surveillance in air, water, food, briquette, and clay binder samples from bijie region, guizhou province, southwest of china.The activities of antioxidant enzymes including copperzinc superoxide.
More DetailsHealth effects of fluoride pollution caused by coal burning article in science of the total environment 2711-3107-16 may 2001 with 246 reads how we measure reads.
More Details1.Introduction.Fluoride compounds are found in a wide range of concentrations in coal, soil, ground water, sea water, minerals, plants and animals unepilowho, 1984, symonds et al., 1988.Coal is the most abundant fossil fuel resource worldwide, therefore, a huge amount of hazardous chemical components including fluorides have been released into the environment by combustion of coal ando.
More DetailsThe combustion of high fluoride-content coal as an energy resource for heating, cooking, and food drying is a major exhaust emission source of suspended particulate matter and fluoride.High concentrations of these pollutants have been observed in indoor air of coal-burning families in some rural areas in china.
More DetailsWang w y, li r b, luo k l.Adsorption and leaching of fluoride in soils and its health impact.Fluoride, 2002, 35 122129 3 wu d s, zheng b s, wang a m, yu g q.Fluoride exposure from burning coal-clay in guizhou province, china.Fluoride, 2004, 37 4.
More DetailsOn further restriction of the model to exclude the 7 studies with arsenic and iodine as co-exposures and fluoride originating from coal burning thus including only the 9 with fluoride exposure from drinking water, neither age nor year of publication was a significant predictor, and the overall test of covariates was less important p 0.062.
More DetailsContain fluoride have plasma levels 1 mcmoll.Biomarkers serum and urinary fluoride levels are the most useful biomarkers of fluoride exposure measurement should be rapid elimination of fluoride environmental levels.Air hydrogen fluoride levels in ambient air ranged from 1.0 to 7.5 gm.3.Sediment and soil concentrations of fluoride in.
More DetailsOther methods of fluoride exposure control need to be designed if fluorosis prevalence among residents of coal- burning endemic fluorosis areas is to be reduced.5.Conclusions.Indoor burning of fluoride-rich coal is believed to cause endemic fluorosis cases among children in the guizhou province of china.
More DetailsEffects of endemic fluoride poisoning caused by coal burning on the physical development and intellgience of children wang, zhang, fan, fang, kang, chen, yu 347 347 5.The relationship between iqs scores and urinary fluoride of children from both zones was investigated by subjecting the urine fluoride and iq data to a single factor correlative.
More DetailsCombustion of coal and coal bricks is the primary source of gaseous and aerosol fluoride and these forms of fluoride can easily enter exposed food products and the human respiratory tract.Major human fluoride exposure was caused by consumption of fluoride contaminated food, such as corn, chilies and potatoes.
More DetailsProfessor handong liangfrom state key laboratory of coal resources and safe mining, china university of mining and technology beijing and his group demonstrate that hydrogen fluoride.
More DetailsUpon burning, gaseous fluoride and particulate dust-containing fluoride are released from coal briquettes.Ando et al.Estimated that only 2 of fluoride exposure was due to inhalation of indoor air in coal- burning households, while 97 of fluoride exposure was due to ingestion of food dried and stored inside the household.Residents of zhij.
More DetailsOf note, fluoride exposure was accompanied by other contaminants from coal burning in some studies 96, 99, 101, 102.Four studies used the degree of dental fluorosis as exposure parameter, and three of them reported a clear negative association with iq 100 , 103 , 107 , although statistical significance was not reached in one study 102.
More DetailsFindings on the risk of bone fractures associated with longterm fluoride exposure from drinking water have been contradictory.The purpose of this study was to determine the prevalence of bone fracture, including hip fracture, in six chinese populations with water fluoride concentrations ranging from 0.25 to 7.97 parts per million ppm.
More DetailsObjective to observe the changes of bone mineral density mass and h ormone in the progress of subchronic fluorosis and further explore the pathogene sis of fluorosis.Methods male wistar rats were randomly divided into two grou ps according to their body.
More DetailsDomestic coal combustion has had profound adverse effects on the health of millions of people worldwide.In china alone several hundred million people commonly burn raw coal in unvented stoves that permeate their homes with high levels of toxic metals and organic compounds.At least 3,000 people in guizhou province in southwest china are suffering from severe arsenic poisoning.
More DetailsHydrofluorosis in humans and domestic animals is a worldwide health problem and caused by a prolonged period of fluoride exposure through drinking of fluoride contaminated water.But in recent years, due to rapid industrialization in india, diverse serious health problems among industrial workers and residents and domestic animals living in the industrial areas due to fluoride pollution are on.
More DetailsUrinary fluoride and dental fluorosis as biomarkers of fluoride exposure in brick kiln workers khanoranga, khalid 415 415.Coal burning, steel production, and brick kilns.2,3 among all the sources of fluoride in the environment, those of anthropogenic origin are the most important.Chronic exposure.
More DetailsFluoride, such as the water supply, and no fluoride pollution from burning coal or other industrial sources, e.G., the villages of wamiao and xinhuai in rural china studied by xiang et al., 2 a higher correlation may be pr esent between intrauterine and.
More DetailsMost airborne fluoride in urbanized areas comes from industrial sources.Key sources include the production and use of phosphate fertilizers and phosphate ores, as well as aluminum, steel and i other metal production facilities.Other sources include glassworks, bricks, ceramics and adhesives 4manufacturing and the burning of coal rich in fluoride.
More DetailsCoal releases fluoride when it is burned.The most common source of fluoride pollution is coal, which releases fluorides when it is burned.Countries with a high concentration of coal-burning power plants, such as china, often experience very high levels of fluoride pollution as a result.
More DetailsProduction plants, superphosphate plants, coal-burning power plants, glassworks and oil refineries, occupational exposure to fluoride levels of about 1 mgm3 may occur.Various types of coal contain fluoride levels in the range 430 gkg 8,9.In a study conducted in the united states of america,.
More DetailsInfluence of coal-burning type fluorosis on contents of no and nos mrna and protein expression in rat brains.7 kaur t, bijarnia rk, nehru b.Effect of concurrent chronic exposure of fluoride and aluminum on rat brainj.Drug chem toxicol, 2009,32 3 215.
More DetailsFluoride is a chemical commonly added to toothpaste.It has a unique ability to prevent tooth decay.For this reason, fluoride has been widely added to water supplies to improve dental health.
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