The sources, pathway, and preventive measures for fluorosis in Zhijin County, Guizhou, China

Dai, Shifeng; Li, Weiwei; Tang, Yuegang; Zhang, Yong; Feng, Peng

doi:10.1016/j.apgeochem.2007.02.011

Cited by 80 publications

(58 citation statements)

References 12 publications

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“…F in roasted corn is much higher than the permitted levels of F (PLFs) in grain (1.5 mg/kg) (GB/T 2762-2005) and fresh corn (below 1.5 mg/kg) , and F in non-roasted corn was slightly higher than the PLFs in roasted corn and fresh corn. It showed that a large amount of F in roasted corn was caused by coal burning, but F in non-roasted corn increased less, which was consistent with several previous studies (Dai et al 2004(Dai et al , 2007Luo et al 2007Luo et al , 2010Luo et al , 2011. F in rice (0.97±0.56 and 1.09±0.24 mg/kg, respectively) and noodle (2.02±0.90 and 1.93±0.87 mg/kg, respectively) in both areas was much less than that of the roasted corn (p<0.01).…”

Section: F and As Concentrations In Foodstuffssupporting

confidence: 81%

“…There are mainly three types of endemic fluorosis: high-F drinking water (Abida et al 2007;Mandinic et al 2010), high-F brick tea (Cao et al 1996(Cao et al , 2003, and coal-burning fluorosis (Ando et al 2001;Finkelman et al 1999;Dai et al 2004Dai et al , 2007Dai et al , 2012. Zhaotong, in Yunnan, is a serious coal-burning endemic fluorosis area (Ye et al 2004a, b;Luo et al 2007Luo et al , 2008Luo et al , 2010Luo et al , 2011Li et al 2012).…”

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confidence: 99%

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The daily fluorine and arsenic intake for residents with different dietaries and fluorosis risk in coal-burning fluorosis area, Yunnan, Southwest China

Luo

Tang

et al. 2014

Environ Sci Pollut Res

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The daily fluorine (F)/arsenic (As) intake (DFI/ DAsI) for residents at different ages with different dietaries and dietary changes was investigated to analyze the fluorosis risk in coal-burning fluorosis area in Yunnan, Southwest China. The DFI for residents with a dietary of roasted corn and roasted chili was 5.06, 9.60, and 14.38 mg for age groups 3-7, 8-15, and over 15 years, respectively. Over 90 % of DFI was from roasted foodstuffs. The DFI for residents of the same age group living on rice and roasted chili was 1.94, 3.50, and 4.95 mg, respectively, which were less than that for the former dietary type, and 65 % of DFI was from roasted chili. The main sources for their DFI are roasted foodstuffs. Both were higher than the dietaries with non-roasted foodstuffs and the recommended daily allowances (RDAs) for USA and China at different levels. The DAsI for all residents ranged from 25 to 135 μg, and at this level of DAsI, it would not influence human health. However, As pollution of roasted foodstuffs might have an important influence for the fluorosis. Residents are changing their staple food from roasted corn to rice, and especially, younger people are more focused on quality life. However, even if residents change their staple food, the habit of eating chili will not change, which also may cause them getting fluorosis. Developing economy, changing dietary types, and changing the habit of drying and keeping chili will help to reduce the fluorosis risk in coal-burning fluorosis area of Southwest China.

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Section: F and As Concentrations In Foodstuffssupporting

confidence: 81%

mentioning

confidence: 99%

The daily fluorine and arsenic intake for residents with different dietaries and fluorosis risk in coal-burning fluorosis area, Yunnan, Southwest China

Luo

Tang

et al. 2014

Environ Sci Pollut Res

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“…Chronic ingestion of fluoride-rich fodder and water leads to the development of endemic fluorosis in animals. Large-scale mining and industrial activities have made the situation even more precarious (21), because burning coal causes a particular type of endemic fluorosis in China (6). Fluorosis in these animals could be related to fluoride emissions from various urban and industrial sources in the region.…”

Section: Introductionmentioning

confidence: 99%

Prediction of the Spatial Distribution of Bovine Endemic Fluorosis Using Ordinary Kriging

Dong

Dong³

et al. 2015

Bulletin of the Veterinary Institute in Pulawy

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The aim of the studies was to develop an alternative method which could overcome the lack of sampling to improve the efficiency of control efforts for bovine endemic fluorosis. The spatial distribution characteristics of the disease were analysed and a prediction model for the estimation of fluorosis distribution in some districts in northwest Liaoning province in China was established. The model used ordinary kriging, and was evaluated using cross-validation. Analysis showed that the distribution of the disease was spatial autocorrelation. The prediction error of the cross-validation (ME = -0.0092, PMSE = 0.627, AKSE = 0.597, and RMSP = 1.007) and comparison with the actual disease distribution indicated that the prediction map accurately distributed bovine endemic fluorosis. It is feasible to predict bovine endemic fluorosis in the area by using ordinary kriging and limited data.

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“…The high quality coal reserves in the world are gradually depleting and therefore, there is a growing interest to utilize the inferior grades of coal which usually contains high ash, sulfur and hazardous trace elements (Balaz et al, 2001;Dai et al, 2004Dai et al, , 2006Dai et al, , 2007Hamamci et al, 1997;Saydut et al, 2007a;Sun et al, 2007Sun et al, , 2009. Turkey possesses substantial coal reserves data on the chemical composition and structure of coal samples is still limited, despite the need for such data on economic and environmental grounds.…”

Section: Introductionmentioning

confidence: 99%

Removal of Sulfur and Ash from Coal Using Molten Caustic Leaching, a Case Study from Hazro Fields, Turkey

Duz

Saydut

Erdoğan

et al. 2009

Energy Exploration & Exploitation

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Molten caustic leaching process is effective in reducing significant amount of ash derived from minerals, pyritic sulfur, and organic sulfur from coal. The effect of leaching coal samples from Hazro fields, situated in Southeast Anatolia region of Turkey with molten sodium hydroxide as well as followed by mild acid on demineralization and desulfurization was investigated. The effects of alkali/coal ratio, time, and temperature on the leaching efficiency were detailed and the experimental results are presented here. Chemical demineralization and desulfurization of coal samples using molten sodium hydroxide was investigated in the temperature range of 200-400 o C. The percentage of demineralization and desulfurization increased with the increase in alkali/coal ratio. The removal of total sulfur and ash increases with increasing leaching temperature and time. As a result of MCL, ash content of Hazro coal was reduced from 18.31 to 6.77 %, and 70% of combustible was recovered. Total sulfur and volatile matter content was reduced from 7.54 to 1.01% and from 47.80 to 12.41%, respectively. Most of the inorganic sulfur and a significant portion of the organic sulfur were removed.

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The sources, pathway, and preventive measures for fluorosis in Zhijin County, Guizhou, China

Cited by 80 publications

References 12 publications

The daily fluorine and arsenic intake for residents with different dietaries and fluorosis risk in coal-burning fluorosis area, Yunnan, Southwest China

The daily fluorine and arsenic intake for residents with different dietaries and fluorosis risk in coal-burning fluorosis area, Yunnan, Southwest China

Prediction of the Spatial Distribution of Bovine Endemic Fluorosis Using Ordinary Kriging

Removal of Sulfur and Ash from Coal Using Molten Caustic Leaching, a Case Study from Hazro Fields, Turkey

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