Beijing Geo engineering Design and Research Institute

Beijing, China

Beijing Geo engineering Design and Research Institute

Beijing, China

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Zhu X.,Capital Normal University | Tang L.,Beijing Geo engineering Design and Research Institute | Ji H.,Capital Normal University | Ji H.,Chinese Academy of science | And 2 more authors.
Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae | Year: 2010

Contents and sources of heavy metals (As, Hg, Cd, Cr, Cu, Mn, Ni, Pb, Ti and Zn) in the sediments of northern Beijing were researched in this article. We collected 17 samples from the basin of the Chao River, Bai River and Miyun Reservoir and 5 samples were from Wenyu River. Contents of As and Hg in the sediments were analyzed by AAS. Cd, Cr, Cu, Mn, Ni, Pb, Ti and Zn were analyzed by ICP-OES. The results showed that the heavy metals were not obviously enriched in sediments, whereas the enrichment of Hg, Cd, Cr and Zn were relatively high in some sediments. Correlation analysis indicated that significant correlations existed among Hg, Cd, Cr and Zn (r > 0.06; p < 0.01), however, Hg had no significant correlations with Cr, Mn, Ni, Pb and Ti. Principal component analysis was applied to estimate the sources of heavy metals. Results showed that the first three components accounted for 38%, 23% and 17% of the total variance. The first principal components included Hg, Cd, Zn and Cu, which were considered to come from developed industry and mining. The second principal components included As and Mn, which are likely from agricultural contamination and sewage. The third principal components included Cr, Ni and Ti, which were considered to come from rock weathering and soil erosion.


Gao Y.,University of Science and Technology Beijing | Guo X.,University of Science and Technology Beijing | Ji H.,University of Science and Technology Beijing | Ji H.,Chinese Academy of science | And 6 more authors.
Atmospheric Research | Year: 2016

Beijing, as the capital of China, is one of the most populous cities in the world. With the fine particulate matter pollution being increasingly serious, daily exposure to hazardous ingredients caused more and more attention. Current research concerning risk evaluation in Beijing was relative less. In November, 2013, samples were collected in seven different functional areas of Beijing, so as to better understand the risk to human health caused by particle matter pollution in this region. PM2.5 pollution in rural and urban Beijing was relative high under haze-fog days in comparison with non haze-fog value. Zn and Ba showed the highest concentration levels among non-carcinogenic metals. The non-carcinogenic metal concentration at all the sites ranged in the same order: Ce, Pb, Cu, V and Sb. Higher ring PAHs (with four to six rings) were the dominant species and constituted more than 90% of the σ14PAHs. Pb (4.34 × 10-4 for men, 3.73 × 10-4 for women) presented the maximum risk level for non-carcinogenic heavy metals in the whole study area. While, risk levels of Cr at residential areas, schools, Olympic Park and rural countryside exceeded the limit for adults. In haze-fog days, the carcinogenic PAH risk level in each functional area ranged in the order: rural countryside > inner suburban district > Olympic Park > city central > schools > ecological reserve > residential areas. To some extent, benzo(a)pyrene may had a potential risk to adults, and other carcinogenic PAHs were all under average risk acceptance. © 2016 Elsevier B.V.


Li Q.,University of Science and Technology Beijing | Ji H.,University of Science and Technology Beijing | Ji H.,Chinese Academy of science | Qin F.,University of Science and Technology Beijing | And 4 more authors.
Environmental Monitoring and Assessment | Year: 2014

Mining has been carried out upstream of Miyun Reservoir, Beijing, for several decades, and has caused metal emissions to the environment, threatening human health. We conducted a soil survey to assess metal contamination in this area and to determine distribution of heavy metals in the particle size. We attempted to determine the possible sources of the metals and the significance of metals in the fine particle fractions to soil risk assessments. Thirty-four soil samples were collected, and eight samples were partitioned into seven size fractions. Most of the metal concentrations in the soils were higher than the background levels in Beijing, and the metal concentrations and total organic matter (TOC) contents generally increased as the particle size decreased. Each metal except Hg significantly positively correlated with the TOC. The metals in the coarse-grained soils were mainly derived from parent materials, but the metals in the fine fractions were mostly anthropogenic. Statistical analyses showed that there were three metal sources: Cd, Cu, Hg, Pb, and Zn had anthropogenic sources; Co, Cr, Ni, and V had mixed anthropogenic and natural sources; and As and Be had natural sources. The trace metals were primarily in the clay and fine silt fractions, and they might pose health risks through the inhalation of resuspended soil particles (PM10 and PM2.5). The elevated accumulation factors, enrichment factors, and ecological risk indices for the metals in the fine fractions suggest that risk assessments should be based on the fine particle size. © 2014, Springer International Publishing Switzerland.


Gao Y.,University of Science and Technology Beijing | Guo X.,University of Science and Technology Beijing | Li C.,University of Science and Technology Beijing | Ding H.,University of Science and Technology Beijing | And 4 more authors.
Environmental Science and Pollution Research | Year: 2015

In recent years, the fine particulate matter pollution has become increasingly serious in Beijing, the capital of China. Being considered as an environment-friendly district of Beijing, current research concerning air pollution in Miyun area was relatively less. From August 24, 2013 to September 29, 2013, 24-h samples were collected in the urban and rural areas of Miyun, Beijing, so as to better understand the sources contributing to PM2.5 and the risk to human health in this district. The data obtained showed that daily PM2.5 mass concentrations ranged from 35.33 to 318.71 μg m−3 in the urban sampling site, which however were between 12.62 and 292.33 μg m−3 in the rural sampling site. At least 23.5 and 41.2 % of the monitoring data, respectively, exceeded the limit value. The mass concentrations of a number of PM2.5 elements fluctuated significantly in the decreasing order of Zn, Ba, Sr, Cu, Pb, Cr, V, Ni, Sb, and Cd. The daily contribution of three cations (NH4+, K+, and Na+) and four anions (F−, Cl−, NO3−, and SO42−) to PM2.5 mass simultaneously varied from 27.51 to 44.04 % and from 29.54 to 46.14 %. In addition, significant linear correlations between main constituents of the ions (SO42−, NO3−, and NH4+) at both sites indicated that the majority of NH4+ was probably in the form of ammonium sulfate and ammonium nitrate. The risk levels of carcinogenic heavy metals detected in survey region occurred in the order of Cr, Cd, and Ni, of which, Cr may have a potential risk to the environment. High risk levels of both carcinogenic and non-carcinogenic heavy metals were easy to occur on haze–fog days. © 2015 Springer-Verlag Berlin Heidelberg


Zhu X.,Capital Normal University | Ji H.,Capital Normal University | Ji H.,University of Science and Technology Beijing | Chen Y.,Capital Normal University | And 3 more authors.
Environmental Monitoring and Assessment | Year: 2013

Heavy metals concentrations in surface sediments from Miyun Reservoir were determined to evaluate the pollution and identify the sources. The average content of metals in sediments from Miyun Reservoir followed the order Al>Fe>Ti>Mn>V>Zn>Cr>Ni>Cu>Pb>As>Cd>Hg, and the most mean values were lower than the globe average shale. Heavy metals concentrations at the inflow area of Baihe were higher than those at the inflow area of Chaohe. Heavy metals pollution assessment was carried out by factor enrichment (EF), geoaccumulation index (I geo), and potential ecological risk (RI). The EF values for all heavy metals except Hg, Cd, and Cr at several sites were lower than 3, suggesting low anthropogenic impact on the metals level. The I geo values of Pb indicated that half of the sites were unpolluted to moderately polluted and mainly located in the Baihe area of the reservoir. The RI showed that heavy metals of Miyun Reservoir were low potential risk, however, Hg approached or belonged to moderate ecological risk at sites of M5, M7, and M13. Correlation analysis and principal component suggested that Ni, Cu, V, Zn, Mn, Cr, Ti, and Pb were derived from soil erosion in upper reaches of the reservoir, while Fe, Cd, Hg, As, and partial Pb originated from anthropogenic sources, particularly industrial mining and gold tailings. © 2012 Springer Science+Business Media Dordrecht.


Huang X.,University of Science and Technology Beijing | Zhu X.,Capital Normal University | Tang L.,Beijing Geo Engineering Design and Research Institute | Ji H.,University of Science and Technology Beijing | Ji H.,Capital Normal University
Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae | Year: 2012

The distribution and cumulative characteristics of heavy metals in different mines and surrounding soil caused by ore dressing and smelting activities were different. In order to investigate the geochemical characteristics and pollution status of heavy metals in the upstream areas of Miyun Reservoir, the soil samples from typical gold and iron mines were analyzed by the geochemical method and the Geoaccumulation Index was used to evaluate the pollution status of heavy metals. The results showed that, the metal concentrations in the Gold and Iron mine soil samples exceeded the background levels in Beijing except for As, and the content of heavy metal in gold mine soil was higher than that of iron mine soil. Moreover, correlation analysis indicated that significant correlations existed among Pb, Zn(p<0.01), Cr, OM(p<0.05) and Cu, while significant negative correlations existed among Pb(p<0.01), Hg(p<0.05) and pH in gold mine soil. There were no significant correlations among metals in iron mine soil. In addition, heavy metals in gold mine tailings were significantly higher than those in iron ore tailings, which was consistent with the soil pollution status in mines. The Geoaccumulation Index suggested that heavy metals in both soil samples were very serious and the pollution degree of gold mine was higher than that of iron mine. The pollution degrees of gold mine soil samples was ordered as Pb>Hg>Cd>Cr>Cu>Zn>Co>As, while Pb>Cd>Cr>Co>Cu>Zn>Hg>As for iron mine soil samples. The results can provide scientific basis for the effective monitoring and management of heavy metal pollution in different metal mines within this region.


Huang X.-X.,University of Science and Technology Beijing | Zhu X.-F.,Capital Normal University | Tang L.,Beijing Geo engineering Design and Research Institute | Ji H.-B.,University of Science and Technology Beijing | And 2 more authors.
Zhongguo Huanjing Kexue/China Environmental Science | Year: 2012

The distribution characteristics and potential ecological risk of heavy metals in a iron mine soil of the upstream area of Miyun Reservoir, Beijing were investigated by the enrichment factor and risk assessment code (RAC). The results showed that, the metal concentrations in the iron mine soil samples exceeded the background levels in Beijing, with As, as an exceptions; the ore dressing and smelting activities in this iron mine had definitely impacted the downstream water and the soil environment. The enrichment factor suggested that the enrichment of Cd, Pb, and Cr were very serious, which posed a remarkable pollution level. Furthermore, the analysis of chemical speciation indicated that heavy metals appeared mainly associated with the residual fraction in the soil, and the exchangeable fractions of Cd was the highest (2.88%~21.15%) among these elements. The RAC showed that Cd posed a medium ecological risk, whereas Pb posed no risk. The degrees of ecological risk descended in the order Cd>Mn>Zn>Cu>Co>Cr>Pb.


Gao Y.-X.,Capital Normal University | Feng J.-G.,Beijing Geo Engineering Design and Research Institute | Tang L.,Beijing Geo Engineering Design and Research Institute | Zhu X.-F.,Capital Normal University | And 3 more authors.
Huanjing Kexue/Environmental Science | Year: 2012

Environmental pollution and risk assessment of heavy metals in soils of iron and gold mine areas of Miyun Reservoir upstream in Beijing were researched in this article. Soil and sediment samples were collected around the mine areas. The contents and extractable contents of heavy metals(Cd, Mn, Zn, Cu, Pb, Ni, V, Cr) were analyzed. Heavy metal contamination was evaluated by the Tucker3 model and risk assessment code (RAC). The results showed that the concentration of most heavy metals in mine areas were exceeded the soil background of Beijing. The fractions of heavy metals in soils were analyzed by BCR sequential extraction procedure. The results showed that exchangeable fraction content for Mn accounted for 20%-30% of the total concentration; exchangeable and Fe-Mn fractions contents for Zn, Cd, Pb respectively accounted for about 17%-24%, 10%-23%, 30%-45% of the total concentration; residual fraction contents for Cr, Ni, V accounted for more than 80% of the total concentration. The Tucker3 model further demonstrated that potential hazards of heavy metals in mine areas. The risk indices were 0.03%-55.18% and 3.94%-67.16% from Mn in soils of iron and gold mine areas of Miyun Reservoir upstream. The risk assessment of Mn had a high potential ecological risk. Other metals had a low potential ecological risk. The conclusion will provide scientific basis in mine environmental pollution control and protection of Miyun Reservoir in Beijing.


Qin F.,University of Science and Technology Beijing | Li Q.,University of Science and Technology Beijing | Ji H.,University of Science and Technology Beijing | Ji H.,Capital Normal University | And 2 more authors.
Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | Year: 2014

This paper researched and evaluated geochemical characteristics and granularity effect of Rare Earth elements in the bulk and size graded soils from iron ore areas along the Chao River. The concentrations of 15 REEs, i.e. La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y were evaluated by inductively coupled plasma mass spectrometry (ICP-MS). The result showed that the metal concentrations in soil samples, whose mean values changed obviously, exceed those of background levels in mainland China. The trend of the relationship between the concentrations of REEs and size grade was consistent, namely, the concentration of REEs increased with decrease of particle size. With standardization of the soils by six Leedy chondrite average of Masuda (1973), the distribution patterns of REEs was consistent, being the right dip type of light rare earth enrichment, Eu negative anomaly obviously, Ce slight loss, which is mainly controlled by the terrigenous. The change characteristics of REE were closely related to the adsorption of clay minerals and mineral composition of size grade. This conclusion provides a scientific basis for rare earth elements being selected as tracers. It also provides reference for the further study of REEs in various particle size fractions internationally.


Qin F.,University of Science and Technology Beijing | Ji H.,University of Science and Technology Beijing | Ji H.,Chinese Academy of science | Li Q.,University of Science and Technology Beijing | And 4 more authors.
Journal of Geochemical Exploration | Year: 2014

This study examines the distributions and potential environmental risk posed by trace elements in various particle size fractions. Element concentrations in soil samples from the study site exceed those of background levels in Beijing, except for Pb and As. The element concentrations generally increased with the decrease of particle size. Both correlation and linear analyses showed positive correlations between element concentrations and organic matter content. The PCA and CA analyses showed that: (1) Cu, Co, Zn, Cd, and V originated from mixed sources; (2) Be, Pb and As came from natural sources and were mainly affected by weathering and erosion of parent rock material; (3) Cr, Ni, and Ba resulted from fine particle pollution; and (4) Hg originated from anthropogenic sources, mainly driven by mining, beneficiation, smelting and acid mine drainage. The Enrichment Factor and Potential ecological harm-indices suggested that the enrichment degree of RI and Er i, increased with the decrease of the particle size, especially for Hg and Cd. This conclusion provides a scientific basis for the prevention of environmental pollution from mining and the protection of the Miyun Reservoir in Beijing. It also provides reference for the further study of trace elements in various particle size fractions internationally. © 2013 Elsevier B.V.

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