Trace Element Articles | Environmental XPRT

A Trace of Arsenic

The cans of baby formula invaded Brian Jackson’s Dartmouth College lab late in 2010. His team picked up an armful of popular brands at the food co-op in Hanover, N.H. Then another armload. Eventually Jackson had a cabinet full of the brightly labeled canisters. Today, he still keeps a few in his office. Not as clutter — that’s not his style. He just likes to keep his toxicology ...

Oct. 1, 2013

By Freytech Inc.

Definition and Number of Subsamples for Using Mosses as Biomonitors of Airborne Trace Elements

Abstract We collected 50 subsamples of the moss Scleropodium purum from each of three sampling sites and determined the concentrations of As, Cd, Cu, K, Hg, Ni, Pb, Se, and Zn in each subsample. We then calculated the number of subsamples required to determine significant differences in the mean concentrations of two sampling sites. We found that to differentiate between an uncontaminated ...

Nov. 18, 2005

By Springer

Atmospheric concentration and fluxes of trace elements in Visakhapatnam City of India

Airborne PM10 samples were collected during winter and summer at three different sites in a coastal city, Visakhapatnam, India. Average individual trace element concentrations fluctuated between 19 ng m−3 (Cd) and 4,802 ng m−3 (Zn). Average trace element concentrations for winter were observed ...

Apr. 1, 2013

By Inderscience Publishers

How are trace elements mobilized during the postweaning fast in northern elephant seals?

Northern elephant seal (Mirounga angustirostris) pups undergo a substantial intertissue reorganization of protein, minerals, and other cellular components during their postweaning development, which might entail the mobilization of associated contaminants.The authors investigated the changes in concentrations of 11 elements (Ca, Cd, Cr, Cu, Fe, Hg, Ni, Pb, Se, V, and Zn) in a longitudinal study ...

Jul. 26, 2012

By John Wiley & Sons, Ltd.

The scalp hair as a monitor for trace elements in biomonitoring of atmospheric pollution

The chemical element contents in scalp hair of 80 apparently healthy 15- to 58-year-old citizens (36 females and 44 males) of a non-industrial region in the Central European part of Russia were investigated by Instrumental Neutron Activation Analysis (INAA) and Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The summary of statistics, arithmetic mean, standard deviation, ...

Apr. 25, 2011

By Inderscience Publishers

Leaves of Lolium multiflorum as indicators of airborne trace element distribution in Central Italy

Ambient air contains particles, ranging from sub-micrometric aerosols to clearly visible dust and sand grains. Plants during evolution developed the ability to maximise light interception and CO2 assimilation and also the efficiency to collect the airborne pollutants. Therefore, plant tissues have been used as indicators of trace elements air pollution. Lolium multiflorum leaves were used as a ...

Jun. 30, 2010

By Inderscience Publishers

Leaching of nutrients and trace elements from stockpiled Turkey litter into soil

Received for publication December 10, 2007. In addition to nutrients, poultry are fed trace elements (e.g., As) for therapeutic purposes. Although a large proportion of the nutrients are assimilated by the birds, nearly all of the As is excreted. Hence, turkey litter constituents can leach into the soil and contaminate shallow ground water when it is stockpiled uncovered on bare soil. This study ...

Mar. 25, 2009

By Soil Science Society of America (SSSA)

Speciation of major, minor and trace elements in River Nile mud

Nile mud sediment samples were collected from the bottom of the main stream of the River Nile at Aswan (Governorate) and ten other sites along the river. The samples were analysed using various acid extraction systems. Atomic absorption spectrophotometry was used for multi-element determination, and chromic acid was used for organic matter determination. Values of 0.08-0.89%, 0.4-8.5 ppm, ...

Sep. 16, 2009

By Inderscience Publishers

Risk indicator for agricultural inputs of traCE elements to Canadian soils

Received for publication April 27, 2008. Trace elements (TEs) are universally present in environmental media, including soil, but agriculture uses some materials that have increased TE concentrations. Some TEs (e.g., Cu, Se, and Zn) are added to animal feeds to ensure animal health. Similarly, TEs are present in micronutrient fertilizers. In the case of phosphate fertilizers, some TEs (e.g., Cd) ...

Mar. 25, 2009

By Soil Science Society of America (SSSA)

The use of assemblage models to describe trace element partitioning, speciation and fate: A review

The fate of trace elements in soils, sediments and surface waters is largely determined by their binding to reactive components of which organic matter, metal oxides and clays are considered most important. Assemblage models, combining separate mechanistic complexation models for each of the reactive components, can be used to predict the solid‐solution partitioning and speciation of trace ...

May 26, 2014

By John Wiley & Sons, Ltd.

Determination of Trace Elements in Lead for Battery Applications using Atomic Absorption Analysis

Sample and Standard Preparation procedures for Trace Elements in Lead [1] Preparation of Lead (Pb) Samples: Drill Pb metal to make small pieces. Weigh 2.0 grams of these pieces on a balance. Place the sample in a 400ml Pyrex breaker and add 10ml H2O, 2.5 grams of tartaric acid and 7ml HNO3. Warm on a hot-plate until the sample dissolves. Dilute to 100ml in a volumetric flask with water (H2O). ...

Jan. 1, 2006

By Buck Scientific Inc

Seasonal movement of trace-element discharge in a typical south-Indian suburban community

Four conventional activated sludge sewage treatment plants (STPs) in Southern India were chosen to investigate the occurrence of major ions and trace metals in dissolved fraction of the wastewater. Samples were collected from inlet and outlet of STPs during the pre-monsoon and monsoon seasons. Except for a few elements (Mn, Mo and Ni), the concentrations of the rest increased at the outlet of ...

Dec. 18, 2017

By IWA Publishing

INAA and AAS study of essential trace elements in ayurvedic Indian medicinal plants

Specific parts (leaves and fruits) of different medicinal plants often used in Indian ayurvedic system were analysed for 18 elements (K, Mn, Na, Fe, Zn, Cu, Co, Br, Sm, Cl, La, Al, Cr, Ca Cd, Ni, Pb and Hg) by employing instrumental neutron activation analysis (INAA) and atomic absorption spectroscopy (AAS) techniques. The samples were irradiated with thermal neutrons in a nuclear reactor and the ...

Aug. 31, 2010

By Inderscience Publishers

Linking trace element variations with macronutrients and major cations in marine mussels Mytilus edulis and Perna viridis

Marine mussels have long been used as biomonitors of contamination of trace elements, but little is known whether variation in tissue trace elements is significantly associated with those of macronutrients and major cations. Here, we examined the variability of macronutrients and major cations and their potential relationships with bioaccumulation of trace elements. We analyzed the ...

Apr. 21, 2015

By John Wiley & Sons, Ltd.

Influence of carbon and lipid sources on variation of mercury and other trace elements in polar bears (Ursus maritimus)

In the present study, the authors investigated the influence of carbon and lipid sources on regional differences in liver trace element (As, Cd, Cu, total Hg, Mn, Pb, Rb, Se, and Zn) concentrations measured in polar bears (Ursus maritimus) (n = 121) from 10 Alaskan, Canadian Arctic, and East Greenland subpopulations. Carbon and lipid sources were assessed using δ13C in muscle tissue and fatty ...

Sep. 16, 2012

By John Wiley & Sons, Ltd.

Analyses of trace elements on quartz surfaces in sulfidic mine tailings from Kristineberg (Sweden) a few years after remediation

Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has been applied to determine the elemental composition of the surface layer, as well as of the first interior layer, of quartz grains from the mine tailings from Kristineberg (northern Sweden) in order to determine concentration gradients between these two layers. The quartz grains were collected from the oxidized and ...

Dec. 1, 2003

By Springer

Fractionation of uranium and other trace elements in soil samples collected in selected regions of the Republic of Kazakhstan

To determine the specific chemical forms of trace elements and to study of their mobility/availability in soil, samples collected in the Republic of Kazakhstan were analysed using the revised BCR protocol. A study was made with dependence of the mobility of different elements of interest on digestion procedures for collected soil samples and Standard Reference Material. The concentrations of the ...

Oct. 15, 2012

By Inderscience Publishers

Geochemistry of trace elements in paddy (rice) soils of Sri Lanka – implications for iodine deficiency disorders (IDD)

Iodine Deficiency Disorders (IDD) are a common health problem prevalent in the wet zone of Sri Lanka with a prevalence of >25 of the population. In comparison, in the dry zone of Sri Lanka IDD occurs in ...

Feb. 1, 2005

By Springer

Determination of trace elements composition in dawadawa, a food condiment used in West and Central Africa

Dawadawa, obtained by alkaline fermentation of the matured dawadawa pod, is a culinary product used to enhance taste, flavour and intensify meatiness in soups, sauces and other dishes in West and Central Africa. It is believed to cure cholera, stomachache, diarrhea, bronchitis, pneumonia, leprosy, hypertension, and pain in the bones. The trace element contents of the fermented dawadawa pods were ...

Jan. 3, 2012

By Inderscience Publishers

Use of mosses to study atmospheric deposition of trace elements: contributions from investigations in Norway

This paper presents essential features of biomonitoring work carried out in the author's laboratory during more than 25 years using various analytical techniques for the determination of over 50 elements. A substantial part of this work concerns large-scale deposition surveys in Norway using the moss Hylocomium splendens, where five nationwide surveys have been carried out since 1977. ...

May 22, 2008

By Inderscience Publishers

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