Genesis of arsenic/fluoride-enriched soda water: A case study at Datong, northern China

Wang, Yanxin; Шварцев, С. Л.; Su, Chunli

doi:10.1016/j.apgeochem.2008.12.015

Cited by 171 publications

(63 citation statements)

References 9 publications

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“…The concentrations of dissolved Fe and Mn range between 155 and 3592 μg/L, and between 20 and 772 μg/L, respectively. The concentration of total Fe varies from 447 to 5033 μg/L, being relatively high levels compared with those in Datong basin, Shanxi (Guo and Wang, 2005;Wang et al, 2008). Fluoride concentrations in the shallow aquifer is relatively great, varying from 0.40 to 3.36 mg/L, with 21% of the samples exceeding WHO standard for F -concentration (1.5 mg/L) in drinking water, which is proposed to be the cause of endemic fluorosis.…”

Section: Trace Elements and Organic Components Of Water Samplesmentioning

confidence: 95%

Environmental geochemistry of high arsenic groundwater at western Hetao plain, Inner Mongolia

Deng

et al. 2008

Front. Earth Sci. China

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Environmental geochemistry of high arsenic groundwater at Hetao plain was studied on the basis of geochemical survey of the groundwater and a core sediment. Arsenic concentration in groundwater samples varies from 76 to 1093 μg/L. The high arsenic groundwater mostly appears to be weakly alkaline. The concentrations of NO -3 and SO 2 -4 are relatively low, while the concentrations of DOC, NH þ 4 , dissolved Fe and sulfide are relatively great. Analysis of arsenic speciation in 21 samples shows that arsenic is present in the solution predominantly as As(III), while particulate arsenic constitutes about 10% of the total arsenic. Methane is detected in five samples with the greatest content being 5107 μg/L. The shallow aquifer in Hangjinhouqi of western Hetao plain is of strongly reducing condition. The arsenic content in 23 core sediment samples varies from 7.7 to 34.6 mg/kg, with great value in clay and mild clay layer. The obvious positive relationship in content between Fe 2 O 3 , Mn, Sb, B, V and As indicates that the distribution of arsenic in the sediments may be related to Fe and Mn oxides, and the mobilization of Sb, B and V may be affected by similar geochemical processes as that of As.

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Section: Trace Elements and Organic Components Of Water Samplesmentioning

confidence: 95%

Environmental geochemistry of high arsenic groundwater at western Hetao plain, Inner Mongolia

Deng

et al. 2008

Front. Earth Sci. China

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“…Over the past two decades, major efforts have been made to study the environmental geochemistry of geogenic arsenic (Nickson et al 1998;Smedley and Kinniburgh 2002;Wang et al 2009;Gao et al 2011). Anthropogenic sources have become increasingly important in bringing As concentrations up to harmful levels in air, water, food, and forage (Blssen and Frimmel 2003;Yudovich and Ketris 2005;Romero et al 2006;Roychowdhury et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Fractionation and speciation of arsenic in fresh and combusted coal wastes from Yangquan, northern China

Gao

Wang

2011

Environ Geochem Health

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In this study, the content and speciation of arsenic in coal waste and gas condensates from coal waste fires were investigated, respectively, using the digestion and sequential extraction methods. The fresh and fired-coal waste samples were collected from Yangquan, which is one of the major coal production regions in northern China. High-performance liquid chromatography-inductively coupled plasma-mass spectrometry (HPLC-ICP-MS) was used to determine the concentrations of four major arsenic species [As(III), As(V), monomethylarsonic acid (MMA) and dimethylarsenic acid (DMA)] in the extracts, while ICP-MS was used to measure total As content. Arsenic content in the investigated coal wastes and the condensate ranges between 23.3 and 69.3 mg/kg, which are higher than its reported average content in soils. Arsenic in coal waste exists primarily in the residual fraction; this is followed in decreasing order by the organic matter-bound, Fe-Mn oxides-bound, exchangeable, carbonates-bound, and water-soluble fractions. The high content of arsenic in the condensates indicates that combustion or spontaneous combustion is one of the major ways for arsenic release into the environment from coal waste. About 15% of the arsenic in the condensate sample is labile and can release into the environment under leaching processes. The water extractable arsenic (WEA) in the fresh coal waste, fired coal wastes, and the condensate varied between 14.6 and 341 μg/kg, with As(V) as the major species. Furthermore, both MMA and DMA were found in fresh coal wastes, fired coal wastes, and the condensate.

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“…Furthermore, As adsorbed to iron hydrates may mobilize under the reducing conditions prevailing in deeper parts of the aquifer (Thomas et al 2008;Kim et al 2012). As a result of groundwater extraction and/or vertical flows within the aquifer, solubilized As and F may be pushed up to more shallow parts (Wang et al 2009) where they remain in solution after coming into contact with oxidizing conditions (CONA-GUA 2008;Brito-Castillo et al 2010;Scanlon et al 2009). In our study, spatial analysis of surface sediments showed greater As content near the sources of As-rich rocks in the south-central part of the area (Fig.…”

Section: Discussionmentioning

confidence: 97%

Arsenic and Fluoride Variations in Groundwater of an Endorheic Basin Undergoing Land-Use Changes

Gómez

Alarcón-Herrera

Gutiérrez

et al. 2014

Arch Environ Contam Toxicol

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The salt content of soil and water in endorheic basins within arid areas greatly restrict agricultural activities. Despite this limitation, these lands are increasingly used to accommodate new settlements and/or agricultural practices. This study focuses on the Laguna El Cuervo closed basin of northern Mexico and its underlying aquifer, which has been found to contain high concentrations of arsenic (As) and fluoride (F). The spatial distribution of As and F, their variations with time, and the impact of drought conditions and land-use changes were investigated using well data collected from a total of 27 wells in 2007, 2010, and 2011 (As data also collected in 2005). Four of these wells were used as monitoring wells. Data also included the As content of 140 surface sediments. Results showed that 54.5 % of the wells surpassed the As limit for drinking water of 0.025 mg L(-1) and that 89.0 % surpassed he F limit of 1.5 mg L(-1). Spatial analyses identified the areas in the center of the basin with the highest content of contaminants. Principal component and correlation analyses showed a co-occurrence of As and F with r = 0.55 for the 2011 data and 0.59 for the combined data. In contrast, the relationship of As and F concentrations to droughts and changes in land use were not as clearly shown, possibly because of the short time this area has been monitored. The high As and F concentrations in the groundwater may be limiting the availability of water within this basin, especially considering the greater groundwater demand foreseen for the future. Water-conservation practices, such as drip irrigation and artificial groundwater recharge, should be considered to maintain groundwater levels supportive of agricultural practices.

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Genesis of arsenic/fluoride-enriched soda water: A case study at Datong, northern China

Cited by 171 publications

References 9 publications

Environmental geochemistry of high arsenic groundwater at western Hetao plain, Inner Mongolia

Environmental geochemistry of high arsenic groundwater at western Hetao plain, Inner Mongolia

Fractionation and speciation of arsenic in fresh and combusted coal wastes from Yangquan, northern China

Arsenic and Fluoride Variations in Groundwater of an Endorheic Basin Undergoing Land-Use Changes

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