Heavy metals in groundwater from the Wolonghu coal mine, northern Anhui Province, China and their hydrological implications

2014 ◽  
Vol 9 (1) ◽  
pp. 79-87 ◽  
Author(s):  
Linhua Sun ◽  
Herong Gui ◽  
Weihua Peng
Keyword(s):  
Heavy Metals ◽  
Coal Mine ◽  
Water Source ◽  
Water Quality Assessment ◽  
Quality Standard ◽  
Anhui Province ◽  
Iron Hydroxides ◽  
Deep Aquifers ◽  
And Cluster Analysis ◽  
Inrush Water

Groundwater is important for either resource usage or safety of coal mining in north China. In this study, concentrations of eight kinds of heavy metals (Pb, Cd, Cu, Ni, Cr, Zn, Fe and Mn) in groundwater from three deep aquifers in the Wolonghu coal mine, northern Anhui Province, China have been analyzed for water quality assessment and water source identification. The results suggest that the groundwater have different concentrations of heavy metals among aquifers, which might be the results of different occurrence forms of heavy metals (e.g. Pb, Cd, Cu and Cr were adsorbed by iron hydroxides) and different kinds of water rock interactions (e.g. Mn and Zn originated from carbonate rocks). In comparison with the groundwater quality standard of China and WHO, most of them cannot be used for drinking directly but must be treated before drinking, especially the Pb, Cd and Fe contents. Moreover, hydraulic connection between aquifers has been identified by plots of factor scores and cluster analysis, which is similar to the results obtained by previous studies. Moreover, discriminant analysis demonstrated that heavy metals can be used for identification the source of inrush water in coal mines.

Heavy Metal Pollution of Soil around the Gangue Hill: A Case Study from Zhuxiangzhuang Coal Mine, Northern Anhui Province, China

2011 ◽  
Vol 356-360 ◽  
pp. 114-118
Author(s):  
Xiang Hong Liu ◽  
Lin Hua Sun ◽  
Song Chen
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Statistical Analysis ◽  
Coal Mine ◽  
Multivariate Statistical Analysis ◽  
Anhui Province ◽  
Multivariate Statistical ◽  
And Cluster Analysis ◽  
Cu And Zn

Heavy metal concentrations of soils around two gangue hills from Zhuxiangzhuang coal mine, northern Anhui province, China had been determined by using X-Ray Fluorescence, and the calculation of enrich factor and index of geo-accumulation, as well as multivariate statistical analysis (including principle component analysis and cluster analysis) had been brought out to light: V, Cr, Fe, Cu and Zn of soils are unpolluted when normalize to soil environmental background value of China. However, when normalized to their minimum concentrations, Zn is light pollution. Two sources of heavy metals have been identified by using multivariate statistical analysis, including lithogenic (V and Fe) and anthropogenic (Cr, Cu and Zn). The soils from the area between two gauge hills have the highest degrees of heavy metals pollution relative to other areas, implying that the method in the Zhuxianzhuang coal mine is useful for environmental protection.

Application of Rare Earth Elements for Water Source Discrimination in Renlou Coal Mine, Northern Anhui Province, China

2011 ◽  
Vol 99-100 ◽  
pp. 1195-1198
Author(s):  
Lin Hua Sun
Keyword(s):  
Rare Earth ◽  
Coal Mine ◽  
Earth Element ◽  
Water Source ◽  
Wall Rock ◽  
Anhui Province ◽  
Rock Composition ◽  
Source Discrimination ◽  
Limestone Aquifer ◽  
Limestone Aquifers

Rare earth element (REEs) concentrations were measured for groundwater and wall rock samples from two aquifers (sandstone and limestone aquifers) in Renlou coal mine, northern Anhui Province, China. The results indicate that groundwater from these two aquifers are rich in REEs as expressed by their Nd concentrations (0.012 and 0.008 μg/L). They all show heavy REEs enrichment with low NdRN/YbRN ratios (0.35 and 0.40) when normalized to their aquifer rocks. Y- Ho fractionation are only observed for groundwater from limestone aquifer with high Y/Ho ratio (97 in average), whereas groundwater from sandstone aquifer have low Y/Ho ratios (24 in average). The former is considered to be related to the release of Y and Ho from calcite with different partition coefficient. The similarity of some REEs between groundwater and aquifer rock, as well as the different rock composition of aquifers, provide possibility for discrimination of water sources by using REEs, and Y/Ho ratios and Eu anomalies are expected to be useful in Renlou coal mine.

Trace Metal Concentrations in Deep Groundwater in Renlou Coal Mine, Northern Anhui Province, China

2012 ◽  
Vol 209-211 ◽  
pp. 1952-1955
Author(s):  
Lin Hua Sun
Keyword(s):  
Coal Mine ◽  
Water Source ◽  
Anhui Province ◽  
Metal Concentrations ◽  
Source Discrimination ◽  
Drinking Water Standard ◽  
Groundwater Samples ◽  
Icp Ms ◽  
Limestone Aquifers ◽  
Different Sources

Concentrations of six types of metals (including Cr, Co, Ni, Cu, Zn and Pb) in twelve groundwater samples from two different aquifers (coal bearing and limestone aquifers) in Renlou coal mine in northern Anhui Province, China have been analyzed by using ICP-MS and processed by statistical analysis for tracing their sources. The results indicate that the concentrations of metals are as follows: Cu(6.68 mg/L)> Cr(2.39 mg/L)> Ni(1.03 mg/L)> Zn(0.882 mg/L)> Co(0.569 mg/L)> Pb(0.116 mg/L). Concentrations of Cr, Ni, Cu and Pb are several times (47.8, 51.5, 3.3 and 8.0, respectively) higher than the drinking water standard of WHO, and indicating that these groundwater cannot be used for drinking directly. Two components (eigenvalues higher than one) have been obtained by using factor analysis with a total variance explanation of 88.7%, and two sources for metals in the groundwater have been identified that Cr-Cu and Co-Ni-Pb are originated from different sources. Moreover, the differences of metal concentrations between groundwater in these two aquifers suggest that they can be used for water source discrimination.

Hydro-Geochemistry of Deep Aquifers in Coal Mines in Northern Anhui Province, China: Implications for Water Rock Interaction and Water Source Discrimination

2012 ◽  
Vol 524-527 ◽  
pp. 604-607
Author(s):  
Lin Hua Sun ◽  
He Rong Gui ◽  
Man Li Lin
Keyword(s):  
Discriminant Analysis ◽  
Major Ions ◽  
Coal Mines ◽  
Water Source ◽  
Anhui Province ◽  
Rock Interaction ◽  
Source Discrimination ◽  
Deep Aquifers ◽  
Chemical Signatures ◽  
Groundwater Samples

Thirty-eight groundwater samples from three deep seated aquifers (the Quaternary, the Coal bearing and the Taiyuan Fm aquifers) had been collected from three coal mines in northern Anhui Province, China for analyzing their major ions, and the statistical methods (correlation, cluster and discriminant analysis) had been processed for evaluating the source of ions and relationship between aquifers. The results suggest that: (1) the chemical signatures of the groundwater are mainly controlled by dissolution of plagioclase, K-feldspar and calcite; (2) the aquifers had been mixed with each other, especially the mixing between the Quaternary aquifer and the Taiyuan Fm aquifer. Discriminant analysis has produced two functions and a diagram, which can be used for water source discrimination.

scholarly journals Statistical analyses of groundwater chemistry in the Qingdong coalmine, northern Anhui province, China: implications for water–rock interaction and water source identification

2021 ◽  
Vol 11 (2) ◽  
Author(s):  
Kai Chen ◽  
Linhua Sun ◽  
Jiying Xu
Keyword(s):  
Source Identification ◽  
Major Ions ◽  
Chemical Constituents ◽  
Water Source ◽  
Anhui Province ◽  
Rock Interaction ◽  
Ion Concentrations ◽  
Major Ion ◽  
Inrush Water ◽  
Water Rock Interaction

AbstractHydrochemistry of groundwater is important in coal mines because it can be used for understanding water–rock interaction and inrush water source identification. In this study, major ion concentrations of groundwater samples from the loose layer aquifer (LA), coal-bearing aquifer (CA) and Taiyuan Formation limestone aquifer (TA) in the Qingdong coal mine, northern Anhui province, China, have been analyzed by a series of statistical methods for identifying the source of chemical constituents in groundwater and the source of inrush water. The results indicate that the mean concentration of the major ions in the LA were ordered as follows: HCO3− > SO42− > Na+ + K+  > Cl− > Ca2+ > Mg2+ > CO32−, whereas average values of the CA in decreasing order are SO42−, Na+ + K+, HCO3−, Cl−, Ca2+, Mg2+ and CO32−, and the major ion concentrations of the TA have the following order: SO42− > Na+ + K+ > Ca2+  > HCO3− > Cl− > Mg2+ > CO32−, and most of the samples are Na-SO4 and Ca-SO4 types. TDS content in water increases with aquifer depth, whereas the pH values ranged from 7.1 to 8.9, indicating a weak alkaline environment. Two sources (weathering of silicate minerals and dissolution of evaporate minerals) have been identified by principal component analysis responsible for the chemical variations of the groundwater, and their contribution ratios have been quantified by Unmix model. Moreover, based on the Q-mode cluster and discriminant analyses, the samples with known sources have been identified correctly to be 95.7% and 97.6%, respectively, and the samples with unknown sources have been determined with high probability (78–100%).

scholarly journals Heavy metals «versus» clay minerals in the quaternary sediments of the Cortegaça beach formation (Ovar, Portugal)

1999 ◽  
pp. 19-25
Author(s):  
A. Machado ◽  
A. P. Silva ◽  
Fernando Rocha ◽  
Celso Gomes
Keyword(s):  
Heavy Metals ◽  
Clay Fraction ◽  
Fine Fraction ◽  
Absorption Spectrometry ◽  
Thin Layers ◽  
Beach Sand ◽  
Iron Hydroxides ◽  
X Ray Diffraction ◽  
Sedimentary Sequences ◽  
And Cluster Analysis

The site under study (Cortegaça beach) belongs to the Ovar municipality and is part of an extensiveregion characterized by flat terrains, consisting mainly of old beach and dunar deposits. Coastal erosionhad exposed the so called Cortegaça beach formation showing the following three sedimentary sequences,from the basis to the top: 1) greenish sandy clay; 2) sand layers with marked cross-bedded showing ontop a bioturbated podzol; 3) bioturbated beach sand and dune sand. The main goal of the present paper isthe establishment of relationships between heavy metals nature and content with the mineral composition,particularly of the clay component, of those sediments. The study of the fine fraction (less than 38 mm)of forty samples collected along three profiles has been carried out. X-ray diffraction was used for mineralogicaldeterminations, whereas atomic absorption spectrometry was used for the determination of theheavy metals: Cu, Ni, Co, Zn, Pb, Cd, Mn and Cr. Mineralogical studies made evident a gradual verticalevolution marked by the following main features: 1) dominance of quartz and phyllosilicates in the finefraction associated to discrete amounts of feldspar and other accessory minerals; evaporite mineralsand iron hydroxides are particularly important in some thin layers; 2) general dominance of illite overkaolinite in the clay fraction with oscillations of the illite/kaolinite content. As regards with heavy metalscontent the following facts deserve to be emphasized: 1) Pb and Cu are more concentrated in thesandy layers showing cross-bedded, whenever iron hydroxides are enriched; 2) Zn, Cr and less clearly,Ni, Co and Cd behave differently of Pb and Cu; 3) Mn is clearly enriched at the top of the 3rd sequence.For the typification and hierarchization of the relationships between the mineralogical and the chemicalvariables geostatistical analysis has been carried out using, in particular, both Principal ComponentsAnalysis and Cluster Analysis.

Experimental investigation on water quality standard of Yangtze River water source heat pump

2012 ◽  
Vol 66 (5) ◽  
pp. 1103-1109 ◽  
Author(s):  
Zenghu Qin ◽  
Mingwei Tong ◽  
Lin Kun
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
River Water ◽  
Heat Pump ◽  
Yangtze River ◽  
Water Source ◽  
Quality Standard ◽  
Heat Pumps ◽  
The Yangtze River ◽  
Water Conditions

Due to the surface water in the upper reaches of Yangtze River in China containing large amounts of silt and algae, high content of microorganisms and suspended solids, the water in Yangtze River cannot be used for cooling a heat pump directly. In this paper, the possibility of using Yangtze River, which goes through Chongqing, a city in southwest China, as a heat source–sink was investigated. Water temperature and quality of the Yangtze River in the Chongqing area were analyzed and the performance of water source heat pump units in different sediment concentrations, turbidity and algae material conditions were tested experimentally, and the water quality standards, in particular surface water conditions, in the Yangtze River region that adapt to energy-efficient heat pumps were also proposed. The experimental results show that the coefficient of performance heat pump falls by 3.73% to the greatest extent, and the fouling resistance of cooling water in the heat exchanger increases up to 25.6% in different water conditions. When the sediment concentration and the turbidity in the river water are no more than 100 g/m3 and 50 NTU respectively, the performance of the heat pump is better, which can be used as a suitable river water quality standard for river water source heat pumps.

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