Heavy metal

Heavy metal. Waste sludge from electroplating system contains high content of heavy metals. killed or decomposed by sufficiently high concentration of heavy metal [1-3].. Currently, heavy metal rich sludge is mainly treated by solidification then disposed/land filled and incineration. However, in Vietnam treatment and utilization of the heavy metal rich sludge has not sufficiently been studied and implemented.

Nghiên cứu, xác định hàm lượng một số nguyên tố kim loại nặng trong thịt bán tại thị trường Hà Nội bằng phương pháp phổ hấp thụ nguyên tử

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Determination of the optimal condition and determination of some heavy metal ions by atomic absoroption spectroscopy and performed by 6300 Shimadzu (Japan). building the standard line to determine some heavy metal ions: Cd, Cu, Pb… 4. The contents of some heavy metal ions in 48 samples of well- meat, samples of– pig meat samples (in market in Hanoi have been analysed. Three heavy metal ions Cu, Pb and Cd in , Nghia Tan Maket, Cau giay Maket, Bach Khao Market have been determined.

Phân tích dạng kim loại Ni, Cu, Zn trong trầm tích sông Nhuệ - Đáy

nguyen thanh nga-kluan.doc

Correa (2005), “Metal speciation and environmental impact on sandy beaches due to El Salvador copper mine, Chile”, Marine Pollution Bulletin, 50, PP.62–72.. Gómez-Parra (2002), “Influence of the Aznalcóllar mining spill on the vertical distributionof heavy metals in sediments from the Guadalquivir estuary (SW Spain. Marine Pollution Bulletin, 44, PP.39-47.. Forstner (1984), “Heavy metals in the Hydrocycle”, Springer, 349, PP.2..

NGHIÊN CỨU ĐÁNH GIÁ HIỆN TRẠNG VÀ KHẢ NĂNG Ô NHIỄM MỘT SỐ KIM LOẠI NẶNG TRONG VÙNG TRỒNG RAU VEN ĐÔ HÀ NỘI

INFORMATION ON DOCTORAL THESIS.doc

Research results about contamination of heavy metal in water, soil, sediment and vegetable are precious material for environmental protection in vegetable cultivation outskirt areas of Hanoi.

Effects of using wastewater as nutrient sources on soil chemical properties in peri‐urban agricultural systems

McGrath, Effects of heavy metals from sewage sludge on soil microbes in agricultural ecosystems, in S.M. Hagedorn, Effects of domestic waste‐water spray irrigation on denitrification rates, Journal of Environmental Quality . Lester, Heavy metal content of vegetables irrigated with mixtures of wastewater and sewage sludge in Zimbabwe: Implications for human health, Agriculture, Ecosystems &.

Toxicity of Surface Water Contamianted with Arthropogenic Pollutants to Micro-Crustacean, Daphnia magna

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Prior to the chemical analyses, the surface water from Xuanhuong lake was thawed then sub-samples were taken and prepared for cyanobacterial toxin, microcystin, heavy metal and herbicide/pesticide analyses. Xuan Huong lake (left) with sampling site (the longer arrow and right).. Pesticides/ herbicides from the surface water were analyzed by adding 100 mL water sample into 250 mL glass then extracted by the solvent (n-hexane and dichromethane).

Nghiên cứu tính chất của các chất lỏng Ion và ứng dụng trong phân tích điện hóa

Ping, J., et al.(2011), Evaluation of Trace Heavy Metal Levels in Soil Samples Using an Ionic Liquid Modified Carbon Paste Electrode. Gardas(2009), Thermophysical Properties of Ionic Liquids.. Torres(2000), Influence of chloride, water, and organic solvents on the physical properties of ionic liquids. Shamsipura, M., et al.(2010), Room-temperature ionic liquids as electrolytes in electroanalytical determination of traces of 2-furaldehyde from oil and related wastewaters from refining processes.

Tổng hợp và nghiên cứu khả năng hấp phụ - xúc tác của hệ composit FeOx/oxit graphen

G, Li J, Ren X, Chen C, Wang X (2011), “Few-layered graphene oxide nanosheets as superior sorbents for heavy metal ion pollution management”, Environ. “Removal of Pb(ii) ions from aqueous solutions on few-layered graphene oxide nanosheet”", Dalton Trans, 40, pp. “Preconcentration of U(vi) ions on few-layered graphene oxide nanosheets from aqueous solutions”, Dalton Tran, 41, pp

Effects of biosolids application on soil chemical properties in peri-urban agricultural systems

Linden, Long-term effects of biosolids applications on heavy metal bioavailability in agricultural soils, Journal of Environmental Quality . Aguilar, Application of biosolids to degraded semi-arid rangeland:

Nghiên cứu xác định lượng vết asen trong môi trường nước bằng phương pháp von-ampe hòa tan

Information_on_doctoral_thesis.doc

“Development Of Mercury-free Metal Film Electrode For Stripping Voltammetric Measurement Of Trace Heavy Metals”. Proceedings of The International Conference on Analytical Sciences and Biotechnology, Hanoi, pp. Hoang Thai Long, Duong Van Hau, Nguyen Van Hop, Hoang Tho Tin, Tu Vong Nghi (2009). “Gold film electrode preparation and activation methods for the determination of arsenic by differential pulse anodic stripping voltammetry”. Hoang Trong Sy, Hoang Thai Long, Le Thi Anh Phuong (2010).

The distribution of peanut-worm (Sipunculus nudus) in relation with geo-environmental characteristics

It means that, the sea water surrounding peanut-worm flats is not yet polluted by heavy metals.. Similarly, the content of heavy metals in sediments of peanut-worm flats (Table 3) shows that the content of most elements (as adsorbed. So, the sediments in peanut-worm flats in Quang Ninh are still not yet polluted by heavy metals.. The distribution of peanut-worm in relationship with geo-environment factors.

Ảnh hưởng của ô nhiễm kim loại nặng lên sự biến động năng lượng dự trữ và hoạt tính enzyme glutathione S-transferase của cá Chép (Cyprinus carpio) và cá Rô Phi (Oreochromis niloticus) trong lưu vực sông Nhuệ - Đáy

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Ecological risk assessment of heavy metals in sediment and human health risk assessment of heavy metals in fishes in the middle and lower reaches of the Yangtze River basin

The Structure of Liquid PbSiO3: Insight from Analysis and Visualization of Molecular Dynamics Data

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However, the structure and dynamics of rarefied [25] and densified silicate glasses containing heavy-metal oxides, as far as the authors know are still in debate.. The present contribution is a molecular dynamics (MD) [26] study of the structure of rarefied and densified lead-silicate glass of the PbSiO3 composition. Distribution of coordination units SiO x (left) and PbO x (right) as a function of pressure.

Molecular Orbitals of Transition Metal Complexes

Figure 1.8) of the nonbonding and antibonding MO (σ M−Lig. is directly linked to the strength of the interaction between the ligand orbitals and those on the metal. The d n notation for the electronic configuration of the metal assumes, however,. What is the oxidation state of the metal centres in the following binuclear complexes: (1) [Re(CO) 5 ] 2 . Initial analysis of the metal–ligand orbital interactions. We now turn to the interactions that involve the d orbitals of the metal centre.

Molecular Orbitals of Transition Metal Complexes

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Sythesize and investigate the catalytic activity of three-way catalysts based on mixed metal oxides for the treatment of exhaust gases from internal combustion engine

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Moreover, some transition metal oxides (Co, Ce, Cu, Fe, W, and Mn) could be used for treating CO [48-52].

Sythesize and investigate the catalytic activity of three-way catalysts based on mixed metal oxides for the treatment of exhaust gases from internal combustion engine

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Figure 3.50 showed the activity of precious catalyst and metal oxides supported on Al2O3. Moreover, an equal activity to noble catalyst sample is already obtained for the MnCoCe sample containing only 20-30% active phase on the support.

Sythesize and investigate the catalytic activity of three-way catalysts based on mixed metal oxides for the treatment of exhaust gases from internal combustion engine

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Synthesize and investigate the catalytic activity of three-way catalysts based on mixed metal oxides for the treatment of exhaust gases from internal combustion engine Nguyen The Tien 78 Catalytic activity of MnCoCe 1-3-0.75 aged in different conditions is shown in Figure 3.35. It can be seen that MnCoCe 1-3-0.75 aged in air containing 27% steam (2) can convert 85% C3H6 at 150 oC and the conversion increase when temperature increase.

Reseach on the removal of hexavalent chromium from aqueous solution by iron nanoparticles

Mallouk Thomas, Surface Chemistry and Electrochemistry of Supported Zerovalent Iron Nanoparticles in the Remediation of Aqueous Metal Contaminants, Chem

Nghiên cứu tổng hợp TiO2 và khả năng ứng dụng để xử lý Cr6+ trong nước thải = Reseach on synthesis of TiO2 and application for Cr6+ treatment in wastewater

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