Huzhou Environmental Monitoring Center

Huzhou, China

Huzhou Environmental Monitoring Center

Huzhou, China
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Peng X.,Nankai University | Shi G.-L.,Nankai University | Zheng J.,Huzhou Environmental Monitoring Center | Liu J.-Y.,Nankai University | And 4 more authors.
Science of the Total Environment | Year: 2016

To understand the influence of quarry mining dust on particulate matter, ambient PM2.5 and quarry mining dust source samples were collected in a city near quarry facilities during 2013-2014. Samples were subject to chemical analysis for dust-related species (Al, Si, Ca, Fe, Ti), tracer metals, carbon components and water-soluble ions. Seasonal variations of PM2.5 and its main chemical components were investigated. Distinctive seasonal variations of PM2.5 were observed, with the highest PM2.5 concentrations (112.42 μg m-3) in fall and lowest concentrations in summer (45.64 μg m-3). For dust-related species, mass fractions of Si and Al did not show obvious seasonal variations, whereas Ca presented higher fractions in spring and summer and lower fractions in fall and winter. A combined receptor model (PMF-CMB) was applied to quantify the quarry mining dust contribution to PM2.5. Seven sources were identified, including quarry mining dust, soil dust, cement dust, coal combustion vehicles, secondary sulfate and secondary nitrate. On a yearly average basis, the contribution of quarry mining dust to PM2.5 was 6%. The contribution of soil dust to PM2.5 was comparable with cement dust (13% and 13%, respectively). Other identified sources included vehicle, secondary sulfate, secondary nitrate and coal combustion, which contributed 23, 15, 9 and 18% of the total mass, respectively. Air mass residence time (AMRT) analysis showed that northeast and southeast regions might be the major PM2.5 source during the sampling campaign. The findings of this study can be used to understand the characteristics of quarry mining dust and control strategies for PM2.5. © 2016 Elsevier B.V.


Wang Y.,Tongji University | Qiu Y.-L.,Tongji University | Fei Y.,Huzhou Environmental Monitoring Center | Li L.,Tongji University | And 4 more authors.
Huanjing Kexue/Environmental Science | Year: 2011

Concentrations of representative organochlorines (OCs), including organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in a batch of farmed mandarin fish from a cultivation pond in Wujiang City, Jiangsu Province, were determined with GC-ECD. Meanwhile, a preliminary human health risk assessment was conducted. Results showed that, the concentrations of dichlorodiphenyltrichloroethanes (DDTs), hexachlorocyclohexanes (HCHs), hexachlorobenzene (HCB) and PCBs in the farmed mandarin fish were in the range of 1.3-4.57 ng/g, 0.13-1.24 ng/g, 0.07-0.44 ng/g and 0-5.22 ng/g, respectively, with an average value of 2.96, 0.40, 1.27 and 0.7 ng/g, respectively. These values were far below the corresponding residue limits set by China's Ministry of Health and the U. S. Food and Drug Administration, and at the low end of the global pollution bar. Referring to the reference values given by USEPA Integrated Risk Information System, calculated non-carcinogenic hazard ratios (HRs) of DDTs, HCB and PCBs were all <1 and carcinogenic HRs of DDTs, HCHs, HCB and PCBs were all >1.The results indicated that DDTs, HCHs and HCB in farmed mandarin fish did not have negative human health influence, but existed potential carcinogenic risk to humans. Compared to rural residents, urban residents were more vulnerable to DDTs, HCHs, HCB and PCBs threats.


Cheng B.,Tongji University | Qiu Y.,Tongji University | Li L.,Tongji University | Zhu Z.,Tongji University | And 3 more authors.
International Conference on Challenges in Environmental Science and Computer Engineering, CESCE 2010 | Year: 2010

The South Taihu Lake receive localized metal pollution from the factories nearby. The aim of this study was to find out the heavy metal accumulation in South Taihu Lake. Concentration of some heavy metals (Cu, Zn, Cr, Ni, Pb, Cd) were determined in sediments samples. Heavy metal levels were analyzed by ICP. Concentrations varied significantly from different sampling sites. The results showed that the metal level in sediment were comparable to the limits proposed by China Environmental Quality Standard for Soils (GB 15618-95), with the overall mean values a little higher than the standard. © 2010 IEEE.


Wang Y.,Tongji University | Qiu Y.,Tongji University | Li L.,Tongji University | Cao Y.,Tongji University | And 5 more authors.
5th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2011 | Year: 2011

Concentrations of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in a batch of aquatic organisms from Taihu Lake were determined with GC-ECD. Meanwhile, a preliminary human health risk assessment was conducted. The concentrations of hexachlorocyclohexanes (HCHs), dichlorodiphenyltrichloroethanes (DDTs), hexachlorobenzene (HCB) and PCBs were in the following ranking order: DDTs > HCHs > PCBs > HCB in snail and DDTs > PCBs > HCHs > HCB in white shrimp and silver fish, respectively. The levels of organochlorines (OCs) were in the following ranking order: snail < white shrimp < silver fish. The results may indicate the bioaccumulation of OCPs and PCBs in aquatic organisms. Referring to the reference values given by USEPA Integrated Risk Information System, calculated hazard ratios (HRs) based on contaminants' carcinogenic and noncarcinogenic health effects in adults in the general population were all <1. The results indicated that exposure of HCHs, HCB, DDTs and PCBs was unlikely to result in any adverse health effects. © 2011 IEEE.


Cheng B.,Tongji University | Qiu Y.,Tongji University | Li L.,Tongji University | Zhu Z.,Tongji University | And 4 more authors.
2010 4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010 | Year: 2010

South Taihu Lake used to get less attention in terms of environmental pollution study in the past Sediment and fish samples were collected from South Taihu Lake in 2009. Heavy met al.s were measured for both types of samples and potential health risks were evaluated. Concentration of Cu, Zn, Cr and Ni were determined for sediments samples, and Cu, Zn, Ni, Fe and Mn were determined for fish samples. It was found that the met al. levels in sediment were lower than the limits proposed by China National Environmental Quality Standard for Soils (GB 15618-95), but higher than the sediment background of Bohai Bay. Levels of determined met al.s varied significantly between male fish and female fish. Compared to Cu and Ni, Zn could accumulate easier in fish than in sediment. The determined met al. levels in fish were safe for human consumption. © 2010 IEEE.


Gao L.,Huzhou Environmental Monitoring Center | Chen J.,Huzhou Environmental Monitoring Center | Zheng J.,Huzhou Environmental Monitoring Center | Zhang H.,Huzhou Environmental Monitoring Center
Pigment and Resin Technology | Year: 2016

Purpose - The purpose of the study reported in this paper is to synthesis curcumin, which was reported to possess broad pharmacological effects and excellent dyeing properties, via Claisen-Schmidt condensation reaction catalysed by an efficient and green solid base catalyst, KF/Al2O3. Design/methodology/approach - A series of catalysts with different KF loadings and varying calcination temperatures had been prepared, characterised by Brunauer-Emmett-Taller surface area, temperature-programmed desorption with CO2 using infrared spectroscopy, X-ray powder diffraction and X-ray photoelectron spectroscopy, and tested in the Claisen-Schmidt condensation reaction. The effects of different reaction parameters such as temperature, the amount of catalyst, reactant ratio and time on the synthesis of curcumin were examined. The possibility of recycling the catalyst was also investigated in detail. Moreover, the reaction mechanism and the role of KF/Al2O3 in the synthetic process were discussed. Findings - The study provides an efficient and green solid base catalyst, KF/Al2O3, and 64.3 per cent yield of curcumin was obtained under the optimum reaction conditions. Experimental results indicate that the third reused catalyst could retain part of the catalytic activity, and the regenerated one could be reused with reasonable catalytic activity. Besides, K3AlF6 was proposed as the active site of the catalyst for the reaction by the analysis of the characterization results of KF/Al2O3. Originality/value - KF/Al2O3 was found to be an efficient catalyst for catalytic synthesis of curcumin and could be easily recycled several times. This information may be useful for further research and practical applications of curcumin. © 2016 Emerald Group Publishing Limited.


Wang F.,Zhejiang University | Yang J.,Zhejiang University | Li Y.,Zhejiang University | Yang X.,Huzhou Environmental Monitoring Center | And 2 more authors.
Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae | Year: 2013

Sediment derived phosphorus (P) is an important P source in waters. Simulation on the release of sediment P involved in most water quality models is oversimplified or lack of information, therefore couldn't effectively reflect the removal and transformation of the contaminants. In this study, a modified WASP model is developed to simulate the water quality in Tiaoxi estuary of Taihu Lake. The modification was based on sediment release dynamics under different hydraulic conditions. Results show that release rate of sediment P increased exponentially with the increase of flow velocity. Simulation results from our modified model are more accurate than the original model with default set. This study also suggests that much more attention should be paid to the release of sediment P in the simulation of water quality in the estuary.


Chen J.,Huzhou Environmental Monitoring Center | Fei Y.,Huzhou Environmental Monitoring Center | Wu J.-F.,Huzhou Environmental Monitoring Center | Ni X.-F.,Huzhou Environmental Monitoring Center | Wu H.-Y.,Huzhou Environmental Monitoring Center
Yejin Fenxi/Metallurgical Analysis | Year: 2010

The lead and manganese in the surface water was simultaneously determined by inductively coupled plasma atomic emission spectrometry (ICP-AES) with lithium chloride as sensitizer. The measuring conditions of instrument, the analytical lines and the concentration of LiCl were investigated. The results indicated that in horizontal observation, the presence of 10 g/L LiCl enhanced the spectral sensitivity of MnI279. 482 nm, MnI403. 075 nm and PbI283. 306 nm by 35 %, 41 % and 19 %, respectively. Moreover, the detection limits were all reduced. This method was applied to the determination of water quality control samples 201219 and 202508, and the results were basically consistent with the certified values, indicating that lithium chloride sensitivity enhancing-ICP-AES method was suitable for the determination of lead and manganese in surface water.


Jiang C.,Huzhou Environmental Monitoring Center | Jun Z.,Huzhou Environmental Monitoring Center | Gao L.,Huzhou Environmental Monitoring Center
Soil and Sediment Contamination | Year: 2015

To identify sources of heavy metal(loid) (HM) contamination in agricultural soils of Huzhou, surface soil samples were sampled from 89 different agricultural regions in 2012. Concentrations of heavy metal(loid)s, along with pH, total phosphorus (TP), total nitrogen (TN), and soil organic matter (SOM), were determined. Ecological risk was then assessed using a modified Hakanson ecological risk index, and the sources of contamination were determined using principal component analysis (PCA). Mean concentrations of heavy metal(loid)s were 10.26, 23.21, 83.75, 22.81, 0.25, 61.86, 33.03, and 0.15 mg kg−1 for As, Cu, Zn, Ni, Cd, Cr, Pb, and Hg, respectively. Cu, Zn, Ni, Cr, Cd, Hg, and Pb were correlated positively with TP and there were obvious positive correlations among Cu, Zn, Ni, Cr, and Cd. Risk index (RI) values varied from 39 to 1246 with a mean value of 137. Enrichment of Pb, Zn, Cu, and especially Cd can be attributed to excessive use of nitrogen and phosphorus fertilizers containing heavy metals, as well to surface irrigation and natural soil formation. While the ecological risk of most agricultural soils in Huzhou is low, it is recommended that the use of phosphate and nitrogen fertilizers be restricted and production technology be improved to reduce the heavy metal(loid) concentrations. Results suggest that the Chinese environmental quality standard for soil should be revised to better address heavy metal(loid) contamination. © 2015, Copyright © Taylor & Francis Group, LLC.


PubMed | Huzhou Environmental Monitoring Center and Nankai University
Type: | Journal: The Science of the total environment | Year: 2016

To understand the influence of quarry mining dust on particulate matter, ambient PM2.5 and quarry mining dust source samples were collected in a city near quarry facilities during 2013-2014. Samples were subject to chemical analysis for dust-related species (Al, Si, Ca, Fe, Ti), tracer metals, carbon components and water-soluble ions. Seasonal variations of PM2.5 and its main chemical components were investigated. Distinctive seasonal variations of PM2.5 were observed, with the highest PM2.5 concentrations (112.42gm(-3)) in fall and lowest concentrations in summer (45.64gm(-3)). For dust-related species, mass fractions of Si and Al did not show obvious seasonal variations, whereas Ca presented higher fractions in spring and summer and lower fractions in fall and winter. A combined receptor model (PMF-CMB) was applied to quantify the quarry mining dust contribution to PM2.5. Seven sources were identified, including quarry mining dust, soil dust, cement dust, coal combustion vehicles, secondary sulfate and secondary nitrate. On a yearly average basis, the contribution of quarry mining dust to PM2.5 was 6%. The contribution of soil dust to PM2.5 was comparable with cement dust (13% and 13%, respectively). Other identified sources included vehicle, secondary sulfate, secondary nitrate and coal combustion, which contributed 23, 15, 9 and 18% of the total mass, respectively. Air mass residence time (AMRT) analysis showed that northeast and southeast regions might be the major PM2.5 source during the sampling campaign. The findings of this study can be used to understand the characteristics of quarry mining dust and control strategies for PM2.5.

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