Fluorine content and distribution pattern in Chinese coals

Luo, Kui; Ren, Dongdong; Xu, Li; Dai, Shifeng; Cao, Daiyong; Feng, Fujian; Tan, Jian'an

doi:10.1016/j.coal.2003.10.003

Cited by 71 publications

(40 citation statements)

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“…Ren et al [9] and Tang et al [10] later investigated fluorine content, finding averages of 131.29 mg/kg (746 samples) and 139.51 mg/kg (108 samples). During the same period, other reports discussed the fluorine concentration in Chinese coal, reporting averages of 82 mg/kg [11] and 130.00 mg/kg [12]. In 2012, a geochemical review of trace elements [13] reported the F value to be 130.0 mg/kg in Chinese coal, which was higher than the average worldwide (88 mg/kg) [14], the report was based on more data and included wider areas than previous studies, we prefer accept this value (130.00 mg/kg) as the mean F value in Chinese coals.…”

Section: Abundance Of Fluorine In Coalmentioning

confidence: 99%

“…With the large amount of domestic coal consumption and commercial coal use, fluorine-related environmental pollution is very serious [2][3][4], such as endemic fluorosis resulted from domestic use in SW China. Many studies have focused on the geochemistry of fluorine in coal [5,6], including abundance, distribution, modes of occurrence, and genetic factors, providing more details about the fluorine in Chinese coals [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Fluorine in Chinese Coal: A Review of Distribution, Abundance, Modes of Occurrence, Genetic Factors and Environmental Effects

et al. 2017

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Fluorine, a hazard that is associated with coal, has resulted in serious environmental issues during the production and utilization of coal. In this paper, we provide a detailed review of fluorine in Chinese coal, including the distribution, concentration, modes of occurrence, genetic factors, and environmental effects. The average concentration of fluorine in Chinese coal is 130.0 mg/kg, which is slightly higher than coal worldwide (88.0 mg/kg). The enrichment of fluorine in Chinese coal varies across different coal deposit regions, and it is especially high in Inner Mongolia (Junger coalfield, Daqingshan coalfield) and southwest China (coal mining regions in Yunnan, Guizhou province). The fluorine distribution is uneven, with a relatively high content in southwest coal (including Yunnan, Guizhou, Chongqing, and Sichuan provinces), very high content in the coal of North China (Inner Mongolia) and South China (Guangxi), and is occasionally found in the northwest (Qinghai). Fluorine occurs in various forms in coal, such as independent minerals (fluorine exists as fluorapatite or fluorite in coal from Muli of Qinghai, Taoshuping of Yunnan, Guiding of Guizhou, and Daqingshan of Inner Mongolia), adsorption on minerals (fluorine in coal from Nantong, Songzao of Chongqing, Guxu of Sichuan, and Shengli, Daqingshan, and Junger from Inner Mongolia), substitution in minerals (Wuda coal, Inner Mongolia), and a water-soluble form (Haerwusu coal, Inner Mongolia). The enrichment of fluorine is mainly attributed to the weathering of source rock and hydrothermal fluids; in addition to that, volcanic ash, marine water influence, and groundwater affect the fluorine enrichment in some cases. Some environmental and human health problems are related to fluorine in coal, such as damage to the surrounding environment and husbandry (poisoning of livestock) during the coal combustion process, and many people have suffered from fluorosis due to the burning of coal (endemic fluorosis in southwest China).

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Section: Abundance Of Fluorine In Coalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fluorine in Chinese Coal: A Review of Distribution, Abundance, Modes of Occurrence, Genetic Factors and Environmental Effects

et al. 2017

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“…The content of sulfur in coal gangue is quite close to the content of sulfur in coal (1.02 wt.%) by Luo et al (2005). What's more, the contents of arsenic and fluoride in coal gangue are higher than those in coal, which are estimated at 4.5 mg/kg (Luo, 2005), and 3.18 mg/kg (Kang et al, 2011) for arsenic; and 82 mg/ kg (Luo et al, 2004a), and 130 mg/kg for fluoride in Chinese coal, respectively. In addition, the contents of mercury in coal gangue are close to these in Chinese coal which is estimated at 0.15 mg/kg (Huang and Yang, 2002) and 0.188 mg/kg .…”

Section: Average Contents Of Sulfur Arsenic Mercury and Fluoride Frmentioning

confidence: 99%

“…Jurassic coal accounts for about 39% of Chinese coals (mainly in Northwest China), and the other coals (mainly Triassic, Cretaceous, and Neogene coals) only about 3% (Chen and Zhang, 1993). Based on the calculation method from Luo et al (2004a), the weighted average content of these three elements in Chinese coal gangue (C 0 ) can be expressed as the following equation:…”

Section: Average Contents Of Sulfur Arsenic Mercury and Fluoride Frmentioning

confidence: 99%

Estimate of sulfur, arsenic, mercury, fluorine emissions due to spontaneous combustion of coal gangue: An important part of Chinese emission inventories

Wang

Luo

Wang

et al. 2016

Environmental Pollution

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a b s t r a c tA rough estimate of the annual amount of sulfur, arsenic, mercury and fluoride emission from spontaneous combustion of coal gangue in China was determined. The weighted mean concentrations of S, As, Hg, and F in coal gangue are 1.01%, 7.98, 0.18, and 365.54 mg/kg, respectively. Amounts of S, As, Hg, and F emissions from coal gangue spontaneous combustion show approximately 1.13 Mt, and 246, 45, and 63,298 tons in 2013, respectively. The atmospheric release amount of sulfur from coal gangue is more than one tenth of this from coal combustion, and the amounts of As, Hg, and F are close to or even exceed those from coal combustion. China's coal gangue production growth from 1992 to 2013 show an obvious growth since 2002. It may indicate that Chinese coal gangue has become a potential source of air pollution, which should be included in emission inventories.

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“…Además del sílice, o del silicio, otras partículas microscópicas suspendidas en el aire a las que está expuesta la población minera, son las de amianto y el polvo de carbón, cuya inhalación puede causar el mesotelioma y la asbestosis (otro tipo de neumoconiosis) (7). En algunos estudios, se ha evidenciado la movilización de elementos como el flúor, con grandes repercusiones en la salud (8)(9)(10)(11)(12).…”

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Spirometry in a population of coal miners in Paipa, Colombia

et al. 2017

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Introducción: Las enfermedades respiratorias derivadas de la exposición a material en partículas, como sucede en la minería del carbón, continúa siendo un reto investigativo en el país y un problema de salud pública. La espirometría es una prueba de la función respiratoria, fundamental para el diagnóstico y la vigilancia de este tipo de enfermedades pulmonares crónicas.Objetivo. Determinar los valores de la espirometría en la población minera de carbón del municipio de Paipa, y su asociación con la edad y el tiempo de exposición laboral.Materiales y métodos. Se hizo un estudio descriptivo de corte transversal. Se diligenció el cuestionario de enfermedad respiratoria ocupacional de la American Thoracic Society (ATS), se registraron las mediciones de la espirometría y se interpretaron siguiendo las recomendaciones internacionales.Resultados. La muestra incluyó 226 trabajadores de minas de carbón de Paipa; en 12,3 % (n=28) de ellos se registraron alteraciones leves, de tipo obstructivo o restrictivo. En 35 % (n=80) hubo disminución de la relación entre la capacidad vital forzada y el volumen espirado en el primer segundo (CVF/VEF1). Se encontró una asociación estadísticamente significativa entre el rango de edad (p=0,002) y los años de trabajo minero (p=0,34), además de trastornos restrictivos y obstructivos. Asimismo, hubo una asociación estadísticamente significativa entre el rango de edad (p<0,01) y los años de trabajo minero (p<0,01), de diferente seriedad en el patrón de las mediciones de la espirometría.Conclusiones. La espirometría es una prueba útil para detectar la presencia de trastornos respiratorios en la población minera del carbón. La enfermedad respiratoria en estos mineros estuvo significativamente asociada con el tiempo de exposición.

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Fluorine content and distribution pattern in Chinese coals

Cited by 71 publications

References 7 publications

Fluorine in Chinese Coal: A Review of Distribution, Abundance, Modes of Occurrence, Genetic Factors and Environmental Effects

Fluorine in Chinese Coal: A Review of Distribution, Abundance, Modes of Occurrence, Genetic Factors and Environmental Effects

Estimate of sulfur, arsenic, mercury, fluorine emissions due to spontaneous combustion of coal gangue: An important part of Chinese emission inventories

Spirometry in a population of coal miners in Paipa, Colombia

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