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To study the spatial distribution characteristics of 10 heavy metals(As, Hg, Mo, Cd, Cr, Zn, Cu, Mn, Pb, Ti) in the soil of Dexing area, Semi-variance function is used to quantitatively describe the structural features of the spatial distribution and map the content distribution. The analysis shows, in addition to cadmium and lead, other elements fit relatively well, which reflects a good spatial...
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),...
The research reveals the mobility and distribution of heavy metals (Cd, Cu, Zn, Mn, Ni, and Cr) in soil of sewage irrigation area in Pearl River Delta. Samples were collected from topsoil (0-10cm) and subsoil (30-40cm), and the total concentration and available concentration of heavy metals were extracted by HNO3-HF-HClO4 and DTPA respectively. The mean total concentrations for all of the heavy metals...
A set of sixty six surface sediment samples were collected from the beach area and its adjacent region in Central part of Tamil Nadu State, SE Coast of India. The samples were analyzed for organic carbon, carbonates, texture of sediments and Partially Extracted Trace Metals (PETMs) (As, Ba, Be, Cd, Co, Cr, Cu, Fe, Mn, Pb, Sr, V, Zn). The results indicate that the organic carbon and carbonates in the...
Most of the metal-based phases formed in the process of sludge incineration are toxic and their emissions need to be strictly controlled. The sludge incineration tests using tubular furnace were carried out to study the distribution of heavy metals under different operating conditions. The emphasis has been on the study of the behavior of the potentially most harmful metals present in the sludge in...
130 wet deposition events were observed at the summit of Mt. Tai (East China, 1534 a.s.l) in China during Jan. 2005 to Dec. 2008. Zn, Al, Mn, Fe, Pb, Cu, Ni, Cr, As, and Cd were determined by ICP-MS to evaluate the characteristics of heavy metals in wet deposition at Mt. Tai region. The concentrations of these metals are generally higher at Mt. Tai than the concentrations observed at other monitoring...
Sludge can be used in agriculture as a fertilizer and soil conditioner. But heavy metals are one of the important factors affecting the sludge for agricultural purpose. In this study, the concentration of Zn, Cu, Pb, Cr, Mn and Ni in seven kinds of sludge from Guangzhou were analyzed and the chemical speciation of heavy metals in the five kinds of sludge were studied. The results showed that the concentration...
Soils and dominant plants were surveyed in the Siding mineland area. Based on the determination of heavy metal concentration of soil from 8 sections and 14 dominant plant species in different parts, the potential ecological risk was assessed using the Hakanson Index Method. The results indicated that the soil of Siding mineland area was seriously contaminated by Pb and Zn. The risk index values of...
The content of metal in the commercially soybean was investigated in Jinzhou City, Liaoning Province, such as Mn,Cu,Mg,Zn,Ca,Co,V,Pb,Cr and Cd. The sample was digested with nitrate and high-chlorine acid. The content of the metal was determined with atomic absorption spectrophotometry. The results showed that the content of Mn,Cu,Fe,Mg,Zn,Ca,Co and V was rich. While the content of Pb, Cr and Cd of...
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 metals 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...
A series of urban wastewater in one WWTP of Xi'an, China was picked to investigate the mechanism of representative heavy metals removal by the wastewater treatment plant (WWTP). Under determine the six different heavy metals(Cu, Zn, Mn, Cr, Hg, As) and SS concentrations of the effluent of the fine screen, sand chamber, oxidation ditch and secondary sedimentation settler, it is wished to find the kinetics...
Samples of hybrid fish (Catla catla ♂ AND × Labeo rohita ♀) were collected during 2006. The contents of chromium, copper, iron, manganese, nickel and zinc in the edible tissue were determined by flame atomic absorption spectrophotometry (FAAS). Among the metal analyzed, Cu, Ni and Zn were the most abundant while Cr and Mn were below the detection limit. Iron was detected in few samples. The correlation...
This paper presents a investigation of pollution originating from coal ash in Jingangshan thermal power station Jiangxi province China. About half of coal ash obtained by coal combustion in the power plant is mixed with ash-flushing water (most of the ash-flushing water from Ganjiang river) and transported to the ash field through the pipeline. In order to assess pollution caused by leaching of some...
For assessment on heavy metals environmental security in coal gangue, coal gangue samples were collected from Xinwen mineral area which lay in Shandong Province of China. Tessier extractive experiments were carried out to check the heavy metals' chemical species. Results showed that the chemical species of heavy metal distribution ranking sequence generally is residuahorganic combinative>Fe-Mn...
The remains of zooplankton subfossil and sediment characteristics were examined from a macrophyte dominated shallow lake Wuliangsuhai in Inner Mongolia, China, in order to study past limnological changes. The lake began to switch to eutrophication gradually in the middle 1980s, creating a Transitional Sediment Layer (TSL, about 17 cm depth) that can be visually used to separate sediments derived from...
In recent years, it draws people's attention to the high frequency of fog and haze. Shijiazhuang is a city where fog and haze have high frequency. This article takes the inhalant particles of fog and haze in the urban district in Shijiazhuang as the main research target, according to the data of the analyzed chemical elements in particles of fog and haze, four main sources of inhalant particles are...
PM2.5 was collected at Shanghai urban and suburban sites from April 2005 to March 2006. ICP-AES (inductively coupled plasma-atomic emission spectrum) was used to investigate mass concentration of 17 elements (K, Na, Ca, Mg , As, Cu, Zn, Pb, Cd, Cr, Al, Fe, Mn, Ba, Sr, Ni, Se) in whole sample and soluble fraction of Shanghai PM2.5. Our results claimed total elements in Shanghai PM2.5 increased gradually...
In this paper, a hybrid progressive algorithm to recognize type II diabetic based on hair mineral element levels is proposed. Hair samples of 244 cases (Table 1) are collected from 51 healthy persons (one case each person), 47 unchecked diabetics (one case each person) and 73 checked diabetics (two cases each person). 8 hair elements (Mg, Ca, Fe, Cu, Zn, Se, Cr and Mn) are measured. The hybrid progressive...
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