Mercury methylation in paddy soil: source and distribution ...

We compared the source and distribution of Hg species in different compartments of the rice paddy during a complete rice-growing season at two different typical Hg-contaminated mining sites in Guizhou province, China: an abandoned site with a high Hg concentration in soil but a low concentration in the atmosphere and a current-day artisanal ...

اقرأ أكثر

methane systems: A case study on the Songhe mine field ...

Overview of the Songhe mine field Geological conditions The Songhe mine field is located in Liupanshui city of western Guizhou Province and covers an area of approximately 32 km2. The tectonic setting lies on the northeastern limb of the Tucheng syncline and shows uniclinal structure with a strike of approximately 60 NW and a

اقرأ أكثر

Distribution and dispersion of heavy metals in the rock ...

12%Research area. The research areas are located in Sansui County (26°47′–27°04′N, 108°32′–109°04′E) southeast of Guizhou Province, China (Fig. 1).They are typical black rock series vanadium mine that contained a variety of associated HMs (Ag, Ba, Co, Cu, Ga, Mo, Ni, and Pb); the concentrations of vanadium pentoxide (V 2 O 5) in rock samples range from 0.07 to …

اقرأ أكثر

Feasibility Study of CMM Utilization for Guizhou Nengfa ...

4.3.1 Thickness and Distribution. ... (CMM) drained and recovered from a mine located in Guizhou Province, of the People's Republic of China. Raven Ridge Resources (RRR) met with the Guizhou Mine Safety Bureau (GMSB) to discuss potential candidate mines for this feasibility study. The selection process was based on a list of

اقرأ أكثر

Predicting the Potential Distribution of Perennial Plant ...

Considering the distribution of C. chinensis in different periods and under different climate scenarios, the relatively stable suitable areas of C. chinensis were mainly distributed in Yunnan, Guizhou, Hubei and Chongqing, and these regions should be given priority when establishing conservation sites …

اقرأ أكثر

‪bo meng‬ - ‪Google Scholar‬

Mercury methylation in paddy soil: source and distribution of mercury species at a Hg mining area, Guizhou Province, China L Zhao, CWN Anderson, G Qiu, B Meng, D Wang, X Feng Biogeosciences 13 (8), 2429-2440, 2016

اقرأ أكثر

Distribution, Development and Utilization of CBM from ...

Natural Gas Geoscience ›› 2011, Vol. 22 ›› Issue (2): 367-372. doi: 10.11764/j.issn.1672-1926.2011.02.367. Previous Articles Distribution, Development and Utilization of CBM from Longchang Coal Mine in Qianxi County, Guizhou Province

اقرأ أكثر

Analysis of Precipitation Variation Characteristics and ...

Abstract: Based on the precipitation data of 34 meteorological stations in Guizhou Plateau from 1960 to 2016, the study analyzed the spatial-temporal distribution of precipitation and its barycenter shift in Guizhou Plateau at different time scales using the Co-Kriging method, Mann-Kendall trend test method, the climate tendency rate and barycenter model.

اقرأ أكثر

Distribution of mercury species in the soils from ...

The distributions of mercury (Hg) in the soils-crops system from weathered coal mine spoils and environmental impacts on the study area in Shuicheng, Guizhou Province, China were studied. Hg and methyl mercury in soils and the crops from weathered coal mine soils were measured using cold vapour atomic fluorescence technique. and the occurrence mode of Hg was analyzed using the BCR method.

اقرأ أكثر

Distribution and transfer of potentially toxic metal(loid ...

2 Institute of Land Resources Survey and Plan of Guizhou Province, Guiyang 550004, China. 3 Institute of Mountain Resources of Guizhou Province, Guizhou Academy of Sciences, Guiyang 550001, China. 4 College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China. Electronic address: [email protected].

اقرأ أكثر

Mercury methylation in paddy soil: source and distribution ...

Mercury methylation in paddy soil: source and distribution of mercury species at a Hg mining area, Guizhou Province, China Lei Zhao1,2, Christopher W. N Anderson3, Guangle Qiu2, Bo Meng2, Dingyong Wang1, and Xinbin Feng2 1College of Resources and Environment, Southwest University, 400716 Chongqing, P.R. China

اقرأ أكثر

Safety hazards in coal mines of Guizhou China during 2011 ...

Since 2000, there have been nearly 400 coal and gas outburst accidents in Guizhou province (Guizhou Coal Mine Safety Supervision Bureau, 2015, Zhang et al., 2021). According to these analysis, a coal mine accident was analyzed: The Xinhua coal mine in the Liuzhi mining area of Guizhou province is a newly built mine on 2014.

اقرأ أكثر

Mercury Methylation in paddy soil: Source and distribution ...

1 1 Mercury Methylation in paddy soil: Source and distribution of 2 mercury species at a Hg mining area, Guizhou Province, China 3 4 L. Zhao1,2, C.W.N. Anderson3, G.L. Qiu2, B. Meng2, D.Y. Wang1, and X. B. Feng2 5 6 1College of Resources Environment, Southwest University, Chongqing 400716, P. R. China 7 2State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese ...

اقرأ أكثر

Minerals | Free Full-Text | Occurrence of Sesquioxide in a ...

Guizhou Province has abundant phosphate resources and the identified reserves rank the second in China . Most of phosphate ore in Guizhou are marine sedimentary deposits, which is of various types, rich in small shelled animal fossils and algae and associated with other available resources such as rare earth elements, uranium [28,29,30].

اقرأ أكثر

Characteristics of human papillomaviruses distribution in ...

HPV distribution varies geographically considerably. Effective HPV prevention and treatment strategies should be specialized based on local HPV distribution characteristics [5]. There is little data about HPV distri-bution characteristics in Guizhou, China. Guizhou is a province …

اقرأ أكثر

(PDF) Fractionation, distribution and transport of mercury ...

Fractionation, distribution and transport of mercury in rivers and tributaries around Wanshan Hg mining district, Guizhou Province, Southwestern China: Part 2 – Methylmercury

اقرأ أكثر

Mercury distribution and speciation in water and fish from ...

Mercury distribution and speciation in water and fish from abandoned Hg mines in Wanshan, Guizhou province, China. Qiu G(1), Feng X, Wang S, Fu X, Shang L. Author information: (1)State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, PR China.

اقرأ أكثر

Mobilisation and transport of arsenic and antimony in the ...

Arsenic and antimony distribution in water, sediment, soil and plants in the Yata gold mine and surrounding area, southwestern China, was investigated, so as to elucidate the mobilisation, transport, and distribution of As and Sb in mine environments.While oxidation of sulfide minerals mobilises both As and Sb, gold extraction by cyanidation is found to mobilise a large amount of Sb.

اقرأ أكثر

Guizhou - Wikipedia

Guizhou / ɡ w eɪ ˈ dʒ oʊ / (Chinese: ; alternately Kweichow) is a landlocked province in the southwest region of the People's Republic of China.Its capital and largest city is Guiyang, in the center of the province.Guizhou borders the autonomous region of Guangxi to the south, Yunnan to the west, Sichuan to the northwest, the municipality of Chongqing to the north, and Hunan to the ...

اقرأ أكثر

Fractionation, distribution and transport of total mercury ...

The Wanshan mercury (Hg) mining area in Guizhou, China, was one of the world's largest Hg producing regions. Numerous tailings containing mine quarry or calcines still remain, leaching Hg to local rivers and streams and potentially impacting the local population. This study focuses on the regional distribution and temporal variation of aqueous Hg fractions in the 5 main watercourses draining ...

اقرأ أكثر

Distribution of Mercury Species in the Soils from ...

Distribution of Mercury Species in the Soils from Weathered Coal Mine Spoils and Crops in Shuicheng,Guizhou Province,China SONG Wen1,HE Tian-rong2,PAN Lu-sheng1(1.College of Resources and Environmental Engineering,Guizhou University,Guiyang 550003,China;2.Key Laboratory of Karst Environ-ment and Geohazard Prevention,Guizhou University,Guiyang ...

اقرأ أكثر

Elimination of coal and gas outburst risk of low ...

2.1 | Basic conditions of the coal mine Shihuatian Coal Mine is located in Zunyi County, Guizhou Province, China (Figure 1), subordinated to Chongqing Nantong Coal Industry Co., Ltd. The geological resources reserve of the mine is 3.906 × 10 7 tons in which the designed usable reserve is 2.169 × 10 7 tons and the recoverable reserve

اقرأ أكثر

ACP - Spatial distribution of mercury deposition fluxes in ...

The legacy of long-term mining activities in Wanshan mercury (Hg) mining area (WMMA), Guizhou, China including a series of environmental issues related to Hg pollution. The spatial distribution of gaseous elemental mercury (Hg 0 ) concentrations in ambient air were monitored using a mobile RA-915 + Zeeman Mercury Analyzer during daytime and ...

اقرأ أكثر

(a) Sketch map showing the distribution of bauxite ...

(a) Sketch map showing the distribution of bauxite deposits in Guizhou province (After Li et al., 2014); (b) Paleostructure map of Duyun movement in central Guizhou (from Deng et al., 2010a,b); (c ...

اقرأ أكثر

Distribution characteristics and risk of heavy metals and ...

The Wanshan mercury (Hg) mine in Guizhou Province is one of the main Hg-producing mines in China, resulting in serious Hg pollution in soil and wastewater. Therefore, the present study is mainly aimed to investigate the current degree of heavy metal pollution and compared the microbial diversity in …

اقرأ أكثر

Distribution characteristics and potential pollution ...

The concentrations of Cd, Pb, and Zn in the sediments of the LX and MS reservoirs in the former artisanal zinc smelting area in northwestern Guizhou exceeded the soil background values in Guizhou Province. The distribution characteristics for each metal in the vertical direction of the sediment column were generally similar, and the sediment ...

اقرأ أكثر

Mercury distribution and speciation in water and fish from ...

Mercury distribution and speciation in water and fish from abandoned Hg mines in Wanshan, Guizhou province, China Sci Total Environ . 2009 Sep 1;407(18):5162-8. doi: 10.1016/j.scitotenv.2009.06.007.

اقرأ أكثر

Investigation on coal seam distribution and gas occurrence ...

It is divided into three high gas belts and one gas belt according to the distribution of coal mine gas in Guizhou, which contains Liupanshui—high gas zone, North Zhina Liuzhi Guiyang—high gas zone, North Guizhou—high gas zone, and East Guizhou—gas zone (Jia et al., 2014). Coalbed methane resources are mainly concentrated in five mining ...

اقرأ أكثر

The Research On Risk Assessment And Prevention And Control ...

Guizhou province has abundant coal resources,among the top location in China.Due to the development of karst landform and increase of mining depth,the water disaster has been a serious threat to safe production in coal mines,and has become a major problem restricting the economic development of coals in Guizhou province.Therefore,how to ...

اقرأ أكثر

-Spatial Distribution …

Abstract:To explore distribution characteristics and pollution degree of heavy metals in farmland around a mining area in Liupanshui, Guizhou province, surface soil was collected with farmland around mining area as the research object.Contents of Cr, Ni, Cu, Pb, Zn and As are analyzed, and their spatial distribution characteristics, heavy metals pollution and potential ecological risk and ...

اقرأ أكثر