Heavy Metal Level Articles on Environmental XPRT

Heavy Metals in Waste

Untitled Document Summary and discussion The aim of this report has been to demonstrate the existing knowledge regardng the harmful effects of heavy metals, the ...

Jan. 1, 2002

By European Commission, Environment DG

Heavy metal levels in tap water in Batina Region, Oman

Most household in Batina depend on private wells for their fresh water supplies. The quality of such water is not regulated or tested by authorities and, therefore, consumers' health might be at risk if water is contaminated. We assessed the contribution of some heavy metals to water pollution. Water samples from 364 houses were collected and analysed for levels of lead, chromium, nickel and ...

Nov. 8, 2007

By Inderscience Publishers

Heavy metal removal - Case Study

KDF 55 and 85 Provide Non-Chemical Water Treatment Media for Lead Removal and Other Heavy Metal Removal from Water In New Jersey's mercury contaminated groundwater - KDF media have been removing mercury to levels below the MCL since 1992. Redox media, non-chemical water treatment remove up to 98% of water-soluble cations (positively-charged ions) of lead, mercury, copper, nickel, chromium, and ...

May 25, 2016

By KDF Fluid Treatment, Inc.

Heavy metal & hydrocarbon contaminated sludge

Solidification of Heavy Metal & Hydrocarbon Contaminated Sewage Sludge Client: North Lanarkshire Council Project Managers: Jacobs Challenge: The former sewage treatment works were decommissioned in the 1970’s. It is thought that during the closure process, demolition material originating from the ...

Oct. 23, 2012

By Soilutions Ltd

A quick guide to oil analysis for engine test applications

Reliability testing is a very important component of new engine development. Engineers need to fully understand and chart the engine lifetime performance under a variety of conditions before mass production may be considered. Many important performance data parameters are collected in real time through the many different types of sensors that are connected to the engine in the test cell and oil ...

Jun. 23, 2017

By Spectro Scientific

Bioaccumulation of heavy metals in some fauna and flora

Bioaccumulation of heavy metals in fauna and flora in the Ijaw area of the Niger Delta of Nigeria were investigated. The fauna-molluscs and crustacea, and flora Hibiscus esculentus and vernonia amygdalina were selected for this study. Results show that Molluscs and crustacea accumulate considerable amounts of heavy metals. Higher levels of all the metals determined Hg, Pb, Cr, Cu, Ni, and Zn were ...

Mar. 20, 2007

By Center for Environment and Energy Research & Studies (CEERS)

Physiological sensitivity of freshwater macroinvertebrates to heavy metals

Macroinvertebrate species traits, such as physiological sensitivity, have successfully been introduced in trait‐based bioassessment approaches and are important predictors of species sensitivity in the field. The authors ranked macroinvertebrate species according to their physiological sensitivity to heavy metals using toxicity data from acute laboratory assays. Rankings for each of the heavy ...

May 3, 2012

By John Wiley & Sons, Ltd.

Accumulation of heavy metals in the bottom sediments of the Irkutsk Reservoir

The chemical composition of the bottom sediment, and more particularly the heavy metals content, reflects human developments and impacts on the catchment and reservoir's natural environment. The bottom sediments of the reservoir retained by the Irkutsk Dam have been analysed. The reservoir is mainly supplied by water from Lake Baikal. The following amounts of heavy metals have been found in the ...

Oct. 7, 2013

By Inderscience Publishers

Spectroscopic study of the interaction of heavy metals with organic acids

The ongoing progress in spectroscopic methods of analysis has resulted in a growing interest in the nature of pollutants and hence the possibility of controlling their levels in the environment. This paper describes a study of the fate of some pollutants in both soil and water at two selected areas in the north of Cairo, Egypt. Samples were collected from Shoubra Elkhima and Kafr ElSheikh during ...

Nov. 6, 2008

By Inderscience Publishers

Survey of Heavy Metals in the Catfish Synodontis Clarias

Elevated levels of heavy metals in the catfish Synodontis clarias can be a good indication of pollution of an aquatic ecosystem due to anthropogenic influence. The concentrations of Zn, Cd, Pb, Mn and Ni were determined in Synodontis clarias caught along a section of Taylor Creek and its associated tributaries. Samples were collected bimonthly between July 1999 and June 2000 in five stations. The ...

Jan. 1, 2007

By Center for Environment and Energy Research & Studies (CEERS)

Occurrence of Tributyltin Compounds and Characteristics of Heavy Metals

Surface sediment samples were collected from Tanzanian major commercial ports and studied for the distribution and behavior of tributyltin (TBT) compounds and heavy metals. The content of TBT in sediments ranged from ND3670 ng (Sn) g1dry wt (1780 ± 1720) (Mean ± SD) at Zanzibar and from ND16700 ng (Sn)g1 dry wt (4080 ± 7540) at Dar es Salaam ports, respectively. Maximum TBT levels were ...

Jan. 1, 2007

By Center for Environment and Energy Research & Studies (CEERS)

Heavy Metals Water Testing Powered by DNA

Water pollution is a worldwide problem affecting developing and developed countries alike. Heavy metal contaminants are one prevalent type of water pollutant. They are persistent in the environment once d is charged and removal from source waters is necessary to ensure a clean drinking water supply. The problem of heavy metal pollution arises from several sources. Heavy metals such as uranium can ...

Jan. 1, 2012

By ANDalyze

ANDalyze - Real Time Testing for Heavy Metals - Whitepaper

Whitepaper on DNAzyme heavy metals testing technology. Water pollution is a worldwide problem affecting developing and developed countries alike. Heavy metal contaminants are one prevalent type of water pollutant. They are persistent in the environment once discharged and removal from source waters is necessary to ensure a clean drinking water supply. The problem of heavy metal pollution arises ...

Jul. 11, 2012

By ANDalyze

Evaluation of toxicity of heavy metals for Escherichia coli growth

Iron is an essential nutrient for living agents due to its noticeable activity in electron transport reactions in biological systems, but its insolubility and reactivity lead to problems of poor availability and toxicity, respectively (Andrews, 1998). Due to insolubility of this element at physiological pH all living agents have involved to use iron transport systems and storage proteins. ...

May 21, 2008

By University of Tehran

Preliminary assessment of heavy metals levels of soils of an oil field in the Niger Delta, Nigeria

Abstract: This communication presents the results of preliminary investigation of the characteristic levels of heavy metals in surface soils of an oilfield in the Niger Delta. The results indicate higher concentration of the following metals: Cd, Pb, Cu; Ni, Zn, Cr, Mn and Hg in soils around the gas plant than the pipeline areas. There is a significant temporal and spatial variation in the ...

Apr. 13, 2006

By Center for Environment and Energy Research & Studies (CEERS)

Plasma carotenoid levels are not directly related to heavy metal exposure or reproductive success in three insectivorous passerines

The authors measured plasma carotenoid levels in three insectivorous bird species, the pied flycatcher (Ficedula hypoleuca), the blue tit (Cyanistes caeruleus), and the great tit (Parus major) in metal‐polluted and unpolluted sites around a copper smelter. Their aim was to determine whether there was interspecific, age‐related, or yearly variation in carotenoid levels and their responses to the ...

Apr. 28, 2012

By John Wiley & Sons, Ltd.

Heavy Metal Monitoring Around the Nesting Environment of Green Sea Turtles in Turkey

Abstract The concentrations of Cd, Pb, Fe, Cr, Ni, Se, Sb, As and Cu were investigated in the nesting environment of green turtles in Mediterranean Sea near Kazanlı, Mersin-Turkey. Tissues of plants growing on the beach and the adjacent environment, beach sand, sea ground sediment, sea grass as well as the egg shells from the nests were analyzed and the results showed no significant ...

Dec. 31, 2005

Studies on Heavy Trace Metal Ions in Industrial Waste Effluents in Pakistan

The impairment of water quality due to introduction of industrial pollutants is a major problem faced by big industrial cities. The uncontrolled release of waste effluents to large water bodies have deleterious effects both on water quality and aquatic life. In our country, Karachi, the largest industrial city, is facing a similar problem. The aim of the present work is to determine the levels of ...

Jun. 1, 2000

Seasonal Fluctuation in Heavy Metal Pollution in Iran`s Siahroud River

Abstract BackgroundThe management of its available water resources has become a key issue for Iran. During the last few decades, the water quality of Siahroud River in the coastal plain of the Caspian Sea in Gilan Province in Northern Iran has significantlydegraded. The scarcity of water has been compounded by rapid population growth and increasing pollution from ...

Jun. 27, 2005

By Soil Conservation and Watershed Management Research Institute (SCWMRI)

Simulating building downwash of heavy metals by using virtual sources: methodology and results

When simulating concentration fields in the direct vicinity of plants emitting heavy metals by using the bi–Gaussian model IFDM and the reported emissions, the simulated concentrations were much lower than the measured ones. Detailed analysis of these results showed that this was due to building downwash. We show that it is possible for a bi–Gaussian model to simulate correct ...

Oct. 13, 2012

By Inderscience Publishers

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