heavy metal contamination of soil pdf

... profile distribution patterns of each heavy metal are site specific, with no consistent distribution pattern correlating with soil depth The toxicity and bioavailability of heavy metals in soils ... more data related to heavy metal contamination around mining sites where various types of metals are extracted In the present study, we assessed the influence of heavy metal contamination on lowland ... problem of heavy metal pollution of watercourses in the area, indicating the need for further investigation and monitoring of fluctuations of water quality with seasonal changes Key words: contamination,

Ngày tải lên: 14/12/2017, 17:55

... Assessment of trace metal contamination of soil in a landfill vicinity: A southern Africa case study Joan Nyikaa*, Ednah Onyaria, Megersa Dinkab and Bhardwaj Shivanic a University of South Africa, ... 18, 2020 Available online February 18, 2020 Keywords: Contamination Landfill Trace metals Indices Pollution Soil ABSTRACT Contamination of soils by trace elements is a worldwide concern and has ... Results and Discussion 2.1 Trace Metal Content of soils The descriptive statistics of assayed trace elements of various sampling sites are presented in Table The means of all trace elements exceeded

Ngày tải lên: 27/05/2020, 04:21

... Properties of Agricultural Soil 68 4.3.2 Heavy Metal Concentration of Soil 70 4.3.3 Mobility of Heavy Metal 71 4.3.4 Adsorption Isotherm 75 4.3.5 Leaching Heavy Metals ... Properties of the Paddy Soil 103 5.3.2 Heavy Metal Concentration in the Soil 105 5.3.3 Heavy Metal Association with Soil Fractions 108 5.3.4 Heavy Metal Adsorption Capacity of Paddy ... HEAVY METAL POLLUTION OF WATER AND SEDIMENTS IN THE RIVERS OF HANOI, VIETNAM, AND ITS EFFECTS ON THE QUALITY OF AGRICULTURAL SOIL AND CROPS Nguyen Thi Lan Huong 2008 HEAVY METAL POLLUTION OF

Ngày tải lên: 15/12/2020, 00:13

... purification of natural aquatic resources, 285 Heavy metal accumulation of Danube river aquatic plants – indication of chemical contamination substratum and littoral zone Permanent monitoring of chemical ... heavy metals Many studies had researched the use of macrophytes as indicators of metals bioaccumulation [6-8] However, while macrophytes are useful biomonitors, the bioconcentration of metals ... and biophysical mechanisms of uptake and accumulation of heavy metals into various * E-mail: pajevics@ib.ns.ac.yu aquatics plants and also, the effect of accumulated metals persistent in plant

Ngày tải lên: 02/11/2022, 11:35

... Properties of Agricultural Soil 68 4.3.2 Heavy Metal Concentration of Soil 70 4.3.3 Mobility of Heavy Metal 71 4.3.4 Adsorption Isotherm 75 4.3.5 Leaching Heavy Metals ... Properties of the Paddy Soil 103 5.3.2 Heavy Metal Concentration in the Soil 105 5.3.3 Heavy Metal Association with Soil Fractions 108 5.3.4 Heavy Metal Adsorption Capacity of Paddy ... HEAVY METAL POLLUTION OF WATER AND SEDIMENTS IN THE RIVERS OF HANOI, VIETNAM, AND ITS EFFECTS ON THE QUALITY OF AGRICULTURAL SOIL AND CROPS Nguyen Thi Lan Huong 2008 HEAVY METAL POLLUTION OF

Ngày tải lên: 07/06/2023, 16:10

... fission of a heavy mass nuclide 16 1.4 Production of 241Am and Pu isotopes in a neutron flux 18 1.5 Location of Idaho National Laboratory (INL) and the... assembly for FTA of a soil ... of DOCTOR OF PHILOSOPHY WASHINGTON STATE UNIVERSITY Department of Chemistry AUGUST 2006 UMI Number: 3233279 3233279 2006 UMI Microform Copyright All rights reserved. This microform ... INVESTIGATION OF RADIOLOGICAL CONTAMINATION OF SOIL SAMPLES FROM IDAHO NATIONAL LABORATORY By ROSARA FAITH PAYNE A dissertation submitted in partial fulfillment of the requirements

Ngày tải lên: 13/11/2014, 09:24

... After determining the heavy metal profile in the sediment, it was concluded that there was probably leaching of heavy metals into the underlying soils The concentration of heavy metals found were ... effect of about 20 years of stormwater infiltration on the receiving soil of an infiltration basin The basin had a surface area of over 7,400 m2, a volume of over 30,800 m3, and a depth of about ... comprised 95% of the heavy metals The concentrations of metals, nutrients, and hydrocarbons dropped Contamination due to Stormwater Infiltration 25 Weiss, LeFevre and Gulliver University of Minnesota

Ngày tải lên: 16/12/2021, 15:05

... irregular discharge of industrial sewage in the study area, are also important causes of soil heavy metal contamination The reasons for the irregular distribution of soil heavy metal contamination ... Modernization of Agriculture from the State Council of China, the monitoring of soil heavy metal contamination and the treatment of related soil pollution are important elements of food safety ... artificial effects on soil heavy metal contamination, it is suitable for the evaluation of soil heavy metal contamination in industrial and mining gathering areas However, the evaluation of Igeo is only

Ngày tải lên: 04/12/2022, 10:38

... concentrations of heavy metals were found in the topsoil and resulted in higher levels of heavy metals in the subsurface soil (25 to 50 cm), for example, the concentration pattern of heavy metals on ... RESULTS AND DISCUSSION A Occurrence of heavy metals in two different soil layers Table presents the concentrations of heavy metals in two different soil layers of four different sampling sites including ... was partly due to the impact of the landfill leachate, properties of soil, and heavy metals [8], [42], [43] The occurrence of heavy metals could be also from the use of fertilizers and pesticides

Ngày tải lên: 20/01/2021, 16:39

... the heavy metal speciation that affected by environmental conditions 2) What is the main speciation of heavy metal in the soil and sediment 3) What is the heavy metal concentration in the soil ... Speciation of heavy metals in soils and sediments An account of the improvement and harmonization of extraction techniques undertaken under the auspices of the BCR of the Commission of the European ... sustainable use of natural resources The contamination of sediments, soils, and biota by heavy metals are of major concern, especially in many industrialized countries, because of their toxicity,

Ngày tải lên: 27/05/2021, 09:07

... monitoring as bioindicator of heavy metal accumulation Eight sampling sites, selected by different history of heavy metal (HM) exposure, were chosen to be sampled for soil, nettle leaves, and newly ... quantitative sentinel of predicted free lead concentrations in soil? Appl Soil Ecol 2003, 22:159–165 Notten MJ, Oosthoek AJ, Rozema J, Aerts R: Heavy metal concentrations in a soil- plant-snail food ... activity, application of sewage sludge, and irrigation of waste water [2] HM pollution of the soil is often less visible and direct than other types of land pollution (e.g., garbage, refuse, littering),

Ngày tải lên: 02/11/2022, 09:01

... one of the primary factors at least in the oak decline of 1911-1920. Also in other parts of Europe, drought was part of the primary causal com- plex of the decline of ... osmotic pressure of leaves from oaks differing in the degree of damage; iii) biomasses of living and dead fine roots of oaks differing in the degree of damage. It was ... table I), mainly due to different soil texture. In Neuenburg, the dense clay layer of the subsoil was covered by a layer of sandy soil which was about 50 cm thick

Ngày tải lên: 08/08/2014, 18:21

... LIST OF PUBLICATIONS 155 iv SUMMARY As a result of increased industrial and urban activities, the occurrence of heavy metal contaminants has been dramatically augmented Heavy metal ... ADSORPTIVE REMOVAL OF HEAVY METAL IONS FROM AQUEOUS SOLUTIONS ZHANG LINZI (B Eng., Xi’an Jiaotong University) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CIVIL AND ENVIRONMENTAL ... DEVELOPMENT OF MULTIFUNCTIONAL MEMBRANES FOR VISUAL DETECTION AND ADSORPTIVE REMOVAL OF HEAVY METAL IONS FROM AQUEOUS SOLUTIONS ZHANG LINZI NATIONAL UNIVERSITY OF SINGAPORE 2012 DEVELOPMENT OF MULTIFUNCTIONAL

Ngày tải lên: 09/09/2015, 17:52

... Effects of temperature 19 2.7 Effects of initial solution pH 19 2.8 Photocatalytic recovery of metals 20 ii 2.9 Effects of the electron donor on photocatalytic reductions 20 2.10 Role of oxygen ... WITH ORGANIC WASTE AND HEAVY METAL FROM SEMICONDUCTOR INDUSTRY ZOU SHUAIWEN (B Eng., Tsinghua University) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING DEPARTMENT OF CHEMICAL & BIOMOLECULAR ... National University of Singapore for funding this research i TABLE OF CONTENTS Page ACKNOWLEDGEMENTS i TABLE OF CONTENTS ii SUMMARY v NOMENCLATURE vii LIST OF FIGURES viii LIST OF TABLES xi CHAPTER

Ngày tải lên: 28/11/2015, 13:45

... Netherlands, pp 1–25 Yadav S (2010) Heavy metals toxicity in plants: an overview on the role of glutathione and phytochelatins in heavy metal stress tolerance of plants S Afr J Bot 76: 167–179 ... www.plant.org Copyright © 2015 American Society of Plant Biologists All rights reserved Ethylene and Plant Tolerance to Heavy Metals excessive metals in a wide range of plant species (Maksymiec, 2007; Peñarrubia ... mutant ↓ Inhibition of root elongation ↓ Inhibition of root elongation ↓ Inhibition of leaf biomass ↓ Root diameter Maintenance of pigment content; ↓ leaf senescence Optimization of ethylene level;

Ngày tải lên: 12/12/2017, 06:27

... Heavy metals contamination is more dominating in agricultural fields near by industrial areas because of large consumption of acidifying compounds and metal ores in Heavy metal pollution of soil ... value of 0.69 TF = CPlant / DTPA CSoil Where, CPlant is the concentration of heavy metals in plants and DTPA CSoilis the Di ethylene thiamine penta acetic acid concentration of heavy metals in soil ... removal of metals by food crops (vegetables and cereals) grown at the wastewater irrigated soil and heavy metals leaching into the deeper layers of soil may be a reason of low concentration of heavy

Ngày tải lên: 13/01/2020, 03:42

... composition of the clay and organic matter may also influence the levels of heavy metals in soils (Barona and Romero, 1996) Heavy metals are very harmful due to their non biodegradable nature Soil organic ... Location and study area The present study of depth wise distribution of heavy metals in different soil series of Hisar district of Hisar division in the state of Haryana in northwestern India (Table ... The average abundance order of heavy metal contents were: Cr>Zn>Pb>Ni> Cu>Co>Cd The calcariccambisol enriched with all heavy metals, except Cd The distribution of heavy metal with depth varies according

Ngày tải lên: 13/01/2020, 08:24

... concentration of heavy metals in the effluent, Ce (mg/L) is the equilibrium concentration of heavy metals remaining in the effluent, v (L) is the volume of effluent solution used and m (g) is the mass of UMC ... the sorption of metals from the automobile effluent Fig Influence of pH on the adsorption of heavy metals from the automobile effluent pH was observed Considering the affinity of UMC for metal ions, ... adsorbent dose on the removal of heavy metals from the effluent at (A) 300 K, (B) 313 K and (C) 323 K Sorption of heavy metals on montmorillonite adsorption trend of the metal ions may be attributed

Ngày tải lên: 13/01/2020, 19:52

... selected heavy metals under AAS as follows; Remediation of metals by the organisms at neutral pH Effect of contact times Uptake of metal by the organisms (analyzed by cell disruption method) Effect of ... the heavy metals toxicity by Bacillus sp and Aeromonas sp concluding that the persistence of these isolates in the presence of the respective heavy metals may be as a result of the possession of ... any metal contamination The Fe2+ is oxidized to Fe3+ in presence of nitric acid 2ltrs of a stock solution of each metal ions was prepared in distilled water and acidified with HNO3 (10-20 ml of

Ngày tải lên: 17/06/2020, 14:38

... 6 62 30 HEAVY METAL CONTAMINATION IN SOILS OF URBAN HIGHWAYS 309 Figure 4. Cluster analysis. Figure 5. XRD pattern of XS1 taken from 1–5 cm depth. HEAVY METAL CONTAMINATION IN SOILS OF URBAN ... location of Cincinnati and the positions of sampling stations (After Sansalone et al., 1998). HEAVY METAL CONTAMINATION IN SOILS OF URBAN HIGHWAYS 311 TABLE VI Amount of metals in the runoff compared ... much from metal parts of vehicles, which is a continuing source. Using the event mean concentrations of heavy metals in the run- off (Table I), which would represent the amount of heavy metal coming...

Ngày tải lên: 16/03/2014, 00:25