Variations in the Fluoride Level in Precipitation in a Region of Human Impact

Walna, Barbara; Kurzyca, Iwona; Siepak, J.

doi:10.1007/978-1-4020-5885-1_4

Cited by 9 publications

(11 citation statements)

References 13 publications

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“…and high concentrations of Na ? (Robertson 1986;Whittemore et al 1993;Kierdorf and Kierdorf 2000;Woo et al 2000;Earle and Krogh 2004;Nordstrom and Ball 2005;Chae et al 2006Chae et al , 2007Walna et al 2007). In fact, investigation also found that the distribution of fluorosis and the patterns of seawater intrusion in Laizhou Bay have the same trends (Chen et al 2011(Chen et al , 2012.…”

Section: Fluorine Contents Of Sedimentary Coresmentioning

confidence: 99%

The levels of fluorine in the sediments of the aquifer and their significance for fluorosis in coastal region of Laizhou Bay, China

Chen

Song

et al. 2013

Environ Earth Sci

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The levels of fluorine in sediment cores obtained from Changyi County (PZ core) and Laizhou County (TS core) are used to discuss the fluorine sources in groundwater and its enrichment dynamics. The sediments in the aquifer are mainly constituted of granite gravels. The levels of fluorine in the PZ and TS cores range from 130 to 468 mg/kg, 139-528 mg/kg, with average values of 324, 348 mg/kg, respectively, which show relatively lower levels than the national average of fluorine in the soil or sediment. Thus, the fluorosis in this area should not be attributed to the levels of fluorine in sediments. The average fluorine concentrations in the aquifer from top to bottom are 154, 139, 200, 222 mg/kg for the TS core, and 154, 130, 266, 272 mg/kg for the PZ core, respectively, which are the lowest of the cores and extremely lower levels than the fresh granites. Such a fact indicates that a vast amount of fluorine has been leached into the groundwater. Moreover, the fluorine leachability is estimated to be approximately 70 %, although the previous documents showed fluorine contents of the granite surrounding Laizhou Bay were almost equal to or even lower than the average levels of fluorine in fresh granites. Meanwhile, a simulation experiment also reveals that fluorine release from rocks increases with the addition of seawater and brine water.Therefore, the seawater intrusion may potentially enhance the fluorine leachability, and should be an important dynamic of fluorine enrichment.

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Section: Fluorine Contents Of Sedimentary Coresmentioning

confidence: 99%

The levels of fluorine in the sediments of the aquifer and their significance for fluorosis in coastal region of Laizhou Bay, China

Chen

Song

et al. 2013

Environ Earth Sci

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“…In particular, the fertilizer plant located at a distance of 10 km may cause the high correlation between F -/SO 4 2-(r=0.76 for p<0.05). A detail description of the fluoride level in precipitation has been presented in a previous paper (Walna et al 2007). Additionally, the elevated nitrate concentrations in rainwater in 2009 can be due to a nearby motorway (a distance of 5 km) and local roads (200 m).…”

Section: Resultsmentioning

confidence: 99%

“…These studies have been conducted since 1991 and confirmed significant pollution of precipitation (Walna and Siepak 1999;Walna et al , 2007Walna et al 2010).…”

mentioning

confidence: 81%

Episodes of extreme rainwater pollution and its relationship with synoptic situation (Wielkopolski National Park, Poland)

et al. 2011

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Synoptic conditions of extreme rainwater pollution episodes, evidenced by maximum values of parameters measured in the protected area of Wielkopolski National Park (western-central Poland), were analysed in this study. . It was assumed, that in winter, western advection of Atlantic air masses was the most frequent aerosol and pollution transport scenario for the investigated area. In summer the most heavily pollution occur at the intensified meridional flow over the central Europe, indicating advection of cooler air from northern Europe and the North Sea. In most of cases, the weather conditions causing extreme concentration of examined pollutants, were determined by the movement of weather fronts over considerable parts of Poland and by precipitation caused by those fronts.

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“…Seawater intrusion might alter groundwater properties, such as Na þ , HCO À 3 concentrations, hardness (TH), total dissolved solids (TDS), conductivity (Ec), and alkali pH Zhang and Dai 2001;Nin, Yu, and Jiang 2005). However, a series of studies on Fl sources and confounding factors for fluorosis in various aquifers indicated that there is a close relationship between high Fl and soft, alkaline groundwater that is depleted in Ca 2þ and enriched in Na þ (Robertson 1986;Whittemore et al 1993;Kierdorf and Kierdorf 2000;Woo et al 2000;Earle and Krogh 2004;Heikens et al 2005;Nordstrom, Ball, and McCleskey 2005;Chae et al 2006Chae et al , 2007Walna, Kurzyca, and Siepak 2007). Therefore, changes in groundwater properties due to seawater intrusion and its relationship with Fl enrichment need to focus on dynamics of high Fl in this region or other coastal areas.…”

Section: Introductionmentioning

confidence: 99%

Fluorine contents and its characteristics of groundwater in fluorosis area in Laizhou Bay, China

Chen

Song

et al. 2012

Toxicological & Environmental Chemistry

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Variations in the Fluoride Level in Precipitation in a Region of Human Impact

Cited by 9 publications

References 13 publications

The levels of fluorine in the sediments of the aquifer and their significance for fluorosis in coastal region of Laizhou Bay, China

The levels of fluorine in the sediments of the aquifer and their significance for fluorosis in coastal region of Laizhou Bay, China

Episodes of extreme rainwater pollution and its relationship with synoptic situation (Wielkopolski National Park, Poland)

Fluorine contents and its characteristics of groundwater in fluorosis area in Laizhou Bay, China

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