干旱区生态环境知识资源中心(Arid): Influence of geological and hydrogeological factors on the high natural fluoride concentrations in groundwaters in Bambui Group (Neoproterozoic), northern of Minas Gerais state, Brazil

Arid

	Influence of geological and hydrogeological factors on the high natural fluoride concentrations in groundwaters in Bambui Group (Neoproterozoic), northern of Minas Gerais state, Brazil
	Iglesias Martinez, M.; Velasquez, L. N. M.; Fantinel, L. M.; Uhlein, A.; Melo da Silva, S.; Rodrigues, P. C. H.
通讯作者	Martinez, MI
来源期刊	BOLETIN GEOLOGICO Y MINERO
ISSN	0366-0176
EISSN	2253-6167
出版年	2010
卷号	121 期号:1 页码:29-43
英文摘要	In the northern semi-arid and semi-humid region of Minas Gerais State, in the southeast Brazil, substantial part of the water supplying is produced by means of deep wells. In several localities the fluoride concentrations are higher than 1.5 mg/L, maximum acceptable limit for drinking water, endangering the public supply and the public health. Endemies of dental fluorosis have been detected since the decade of 1990. The cause of this problem has been associated to the consumption of local drinking water. Current studies indicate the occurrences of fluorite in the limestones of the Bambui Group as the main mineral-source for the fluoride content in the groundwater, however without identifying the specific contribution of each hydrostratigraphic unit. This work shows the results of stratigraphic studies and hydrochemical analysis of 144 deep wells and the influence of the carbonatic facies in the fluoride concentrations of the water. Fluoride concentrations are related to fluorite occurrences/mineralizations (lithostratigraphic control) and to circulation depth of groundwater (geochemical control), newly distinguishing three hydrostratigraphic units. The correlation analysis of hydrogeochemic parameters (F-, Mg2+, SO42- and electric conductivity) corroborates these grouping into three units. The probability of the contamination by fluoride, as a function of the hidroestratigraphic units, in decreasing order, seems to be: top level of the Sete Lagoas Formation; Lagoa do Jacare Formation; and botton and middle levels of the Sete Lagoas Formation.
类型	Article
语种	西班牙语
收录类别	ESCI
WOS记录号	WOS:000422366800003
WOS类目	Geology
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/329580
作者单位	[Iglesias Martinez, M.] Inst Geol & Minero Espana, Oficina Proyectos Almeria, C Real 115, Almeria 04002, Spain; [Velasquez, L. N. M.; Fantinel, L. M.; Uhlein, A.; Melo da Silva, S.] Univ Fed Minas Gerais Brasil, BR-31270901 Belo Horizonte, MG, Brazil; [Rodrigues, P. C. H.] Ctr Desenvolvimento Tecnol Nucl Brasil, BR-31270901 Belo Horizonte, MG, Brazil
推荐引用方式 GB/T 7714	Iglesias Martinez, M.,Velasquez, L. N. M.,Fantinel, L. M.,et al. Influence of geological and hydrogeological factors on the high natural fluoride concentrations in groundwaters in Bambui Group (Neoproterozoic), northern of Minas Gerais state, Brazil[J],2010,121(1):29-43.
APA	Iglesias Martinez, M.,Velasquez, L. N. M.,Fantinel, L. M.,Uhlein, A.,Melo da Silva, S.,&Rodrigues, P. C. H..(2010).Influence of geological and hydrogeological factors on the high natural fluoride concentrations in groundwaters in Bambui Group (Neoproterozoic), northern of Minas Gerais state, Brazil.BOLETIN GEOLOGICO Y MINERO,121(1),29-43.
MLA	Iglesias Martinez, M.,et al."Influence of geological and hydrogeological factors on the high natural fluoride concentrations in groundwaters in Bambui Group (Neoproterozoic), northern of Minas Gerais state, Brazil".BOLETIN GEOLOGICO Y MINERO 121.1(2010):29-43.