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The hazardous substances listed in the EU Water Framework Directive (Directive 2000/60/EC of the European Parliament and of the Council establishing a framework for the Community action in the field of water policy) as priority and priority hazardous substances, HELCOM substances of specific concern to the Baltic Sea and some other pollutants which our team deemed potentially problematic for the Baltic...
The pollutants in urban storm runoff, which lead to non-point source contamination of water environment around cities, are of great concerns. The distributions of typical contaminants and the variations of their species in short term storm runoff from different land surfaces in a seaside city in South China were investigated. The concentrations of various contaminants, including organic matter, nutrients...
Cu is the most common heavy metal contaminant in the environment. The engineering and technology of construct wetland have been used to control the pollution of water due to its economy and efficiency and the hydrophytes were the most important constituents of construct wetland. In April, 2011, Cu2+ accumulation content in different parts of Zizania latifolia, Acorus calamus, Phragmites australis...
The effect of different organic acid on heavy metals removal from sludge was investigated. It indicated that the inhibition of various organic acids on heavy metals removal was substantially discrepant. To different heavy metals, the sensitivity of effect extent was followed as Pb>Cu>Zn. The organic acid with two carbonyls had no negative effect on the growth of sulfur-oxidizing bacteria. As...
The contents and characteristics of ten heavy metals in surface sediments from Yangzonghai Lake in Yunnan, China were analyzed. Ecological risk index presented by Håkanson to assess the potential ecological risk of Yangzonghai Lake was utilized. The results showed that the average concentrations of titanium(Ti), manganese(Mn), zinc(Zn), vanadium(V), chromium(Cr), copper(Cu), nickel(Ni), cobalt(Co),...
Based on the investigating the inter-tidal water environment in Qinhuangdao section, the distribution characteristics of ammonia nitrogen, chemical oxygen demand, Zn, Cd and other metal elements in the water body and the pollution characteristics of Cu, Pb, Zn and Cd in surface sediment were studied. The results showed that Cd, chemical oxygen demand and ammonia nitrogen are the main pollutants in...
So far many toxicologic studies are made earlier; we studied the acute toxicity estimation related to some specific identified freshwater zooplanktons of Paradip (Harbour City) area of Jagatsingpur District, Orissa, India which is situated on the bank of Mahanadi River. The study area is prone to heavy metal pollution because mineral based industries in relation to zinc, lead and cadmium are common...
Estuaries are biologically productive and diverse coastal areas that are also vital to commerce, transportation, and recreation activities. In this paper, we demonstrate the potential of the hyperspectral data for monitoring heavy metal pollution such as zincum(Zn) and plumbum(Pb) in estuary. A series of methods were used to manage the basical spectral reflectance and the sensitive bands for estimation...
Sewage irrigation is one of the methods to solve water shortage in north China Plain. The wastewater usually come from urban domestic and industrial sewage, inappropriate sewage irrigation can pollute soil and crops by heavy metal depositing. Thereby impact on health of humanbeing indirectly. This paper try to monitor the impact of heavy metal on wheat leaves by hyperspectral remote sensing. Results...
The present study was conducted to investigate the heavy metals (HMS) removal from aqueous solutions in Complex ecosystem filter (CEF) with vermiculite substrate. Experimental results showed that the CEF was highly effectively in removal of HMS and the average removal rates of Cu2+, Zn2+, Pb2+ and Cd2+ were 81.60%, 80.55%, 83.20% and 62.21% respectively, under the hydraulic loading of 2.0m3/m2.d....
With the Tessier Five-step Continuous Extracting Method, the thesis studied the form distribution of heavy metals in the sediment samples collected from Mochou Lake, Xuanwu Lake and Qinhuai River in Nanjing, analyzed the correlation between leaching contents of heavy metals and various forms and between content of organic matter and leachability of heavy metals and between organic matter and organic...
The water system of Fen River in Shanxi province has upstream, midstream and downstream three sections, which are separately located in Jingyou, Jiexiu, Xiaodian, Hongtong, Linfen and Hejin, six sampling points are disposed there for the sake of collecting the samples of the filtered water and suspended matter, and measuring heavy metal contents. The measurement results show that heavy metal exist...
The concentration of eighteen nutrients and heavy metals in E. crassipes collected from different sites in the North Zhejiang, China was concurrently studied. The concentration of the elements in whole plants was in the order of K (14896.92 μg g-1)>P (5775.78 μg g-1)>S (5596.38 μg g-1)>Ca (2368.92μg g-1)>Pb (2380.03 μg g-1)>Mn (852.90 μg g-1)>Fe (782.63 μg g-1) >Al (456.26 μg...
Yunfu pyrite deposit bearing thallium (Tl) with proven reserves of three million tons' Tl in Guangdong Province, China has been extensively exploited since 1970. This study investigated contamination levels of Tl and other trace metals in ecosystem such as soils, surface waters, vegetables and crops in the area near the deposit. Results show that Tl in these samples nearby has greatly enriched and...
Twelve samples of surface sediment in Nanhu Lake, Wuhan city were collected and the concentrations of Organic Matter (OM), Total Nitrogen (TN), Total Phosphorus (TP), ammonia nitrogen (NH4+-N) and nitrate nitrogen (NO3--N) were determined; the average result were 6.58%, 3972, 1712, 897 and 20mg/kg separately. Cd, Hg, As, Cu, Pb, Cr and Zn were determined too; and the average value were 0.46, 0.140,...
Characterization of urban stormwater runoff was carried out in commercial, residential and cultural and educational zones during 2009 rainy season in Tianjin. The pH, DO, BOD5, COD, TOC, TSS, TN, TP, NH3-N, As, Pb, Zn, Cd, LAS and fecal coliforms in stormwater runoff were analyzed. The ranges of arithmetic mean concentration of COD, TSS, TN, LAS and fecal coliforms were 67-331 mg/L, 134-480 mg/L,...
The objective of this study was to evaluate the spatial distribution, pollution extent and sources of heavy metal in Nansi Lake. Twenty six surface sediments were selected for determination of the total metal content. High concentrations of heavy metals including Cu, Cd, Pb, Zn, Cr, Fe and Mn, ranged from 3.15 to 230000 mg/kg-dry weight (dw). Clustering analysis was used to classify the monitoring...
The research reveals the distribution and correlation of heavy metals in groundwater of sewage irrigation area in Guangdong province. 14 groundwater samples were collected in August 2008, and the groundwater samples were filtrated through 0.45 μm membranes and acidified in the field. Determinations of Cd, Cu, Zn, Pb, Ni, and Cr in all the samples were performed using ICP-OES, and determinations of...
Yundang Lake is an important area for living and traveling in Xiamen Island. Severe pollution and sedimentation have been found in the lake, and then the dredging is needed. In order to assess the pollution level of dredged material, sediments from 6 stations in the Yundang Lake were sampled for heavy metal contamination, speciation analysis, and adsorption-desorption experiment in April 2003. Heavy...
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