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 & 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

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.

Modified Sine Wave Inverters vs Pure Sine Wave Inverters

Most everyday appliances and commercial tools run on AC power. This is fine if you’re connecting the device to a wall outlet that provides AC power. But what if you want to use power from a DC source, like a solar-powered generator or a car battery? In such cases, individuals need to use an inverter – a device that converts DC power to AC power. There are several types of ...

May 11, 2017

By Larson Electronics LLC

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)

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

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.

$A solution to fracturing water supply and disposal issues$

A solution to fracturing water supply and disposal issues

“Water, water, everywhere, Nor any drop to drink.” –The Rime of the Ancient Mariner, Samuel Taylor Coleridge Many topics of conversation among oil and gas industry professionals are predictable – oil price trends, the “great shift change” imperiling the available workforce, and production quotas and caps from OPEC. Yet one pressing topic among those developing ...

May 15, 2017

By Fairmount Santrol

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)

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

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)

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.

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)

Results of heavy metals and other water quality levels in tap water from Çan sourced from Ağı Dağı (Mt. Ağı) (Çanakkale, Turkey)

In this study, the concentrations of heavy metals Pb, Cu, Zn, Cd, Ni, Fe, Mn and Cr were determined using an inductively coupled plasma and optical emission spectrophotometer (ICP-OES), and water quality parameters pH, temperature, and conductivity were measured using the YSI 556 MPS water probe. The water samples were collected monthly from five different street tap water points sourced from ...

Jan. 4, 2016

By IWA Publishing

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

Contamination levels assessment of heavy metals in road dust deposited in various types of urban traffic: a case study of Hassi Messaoud City (Algeria)

This study identified the levels and sources of heavy metal contamination in road dust from busy traffic areas in Hassi Messaoud, Algeria. A total of 13 sampling sites, including three traffic rotaries, tow highways, three downtown areas, four circulation roads and one background area, were selected for this study. The contamination levels of the heavy metals in the road dust were evaluated ...

Jan. 7, 2015

By Inderscience Publishers

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