trace Hg analysis Articles

Toxic effects from heavy metals (Pb, As, Se, Cd, Bi, Sn, Tl, and Hg) have been characterized in medical literature for decades. Originally, complex extractions were performed to isolate the poisonous components from the complex biological matrices: blood, serum, urine and tissues. Recently, optical emission and atomic absorption spectroscopy techniques were developed to determine these toxic ...

Dec. 31, 2005

By Buck Scientific Inc

Characteristics of Mercury What is Mercury? Mercury is a naturally occurring silver-colored metallic element noted for its occurrence as a liquid at room temperature and toxic to living organisms. This silvery, opaque liquid metal is very dense, yet has a high surface tension that causes it to form tiny perfect spheres in the pores of the rocks it is found in. It is ...

May 30, 2007

By HORIBA Europe GmbH

Specific parts (fruits and seeds) 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 ...

Mar. 4, 2010

By Inderscience Publishers

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. 24, 2011

By Inderscience Publishers

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. 30, 2010

By Inderscience Publishers

The globalization of food markets and the relative ease with which food commodities are transported between countries, means that consumers are increasingly concerned about the origin of the foods they eat. The food and drink industry is constantly striving to attain improved quality and security for its products. The demands of nutritional value for the consumer and the protection of food brands ...

Aug. 6, 2017

By Specac Limited

We apply the chemical speciation model WHAM/Model VII to investigate the distribution of metal species of Fe(III) and the divalent cations of Ni, Cu, Zn, Cd, Hg and Pb, in the water column of estuaries and coastal areas. We compare, for the same locations, measured and modelled free ion and organically bound metal concentrations. The modelled free ion calculations show varying levels of ...

Nov. 11, 2014

By John Wiley & Sons, Ltd.

Removal of trace mercury from aqueous solution by Mn (hydr)oxides formed in situ during coagulation with poly-aluminum chloride (PAC) (in situ MnOx combined with PAC) was investigated. The efficiency of trace mercury removal was evaluated under the experimental conditions of reaction time, Mn dosage, pH, and temperature. In addition, the ionic strength and the ...

Jun. 7, 2015

By IWA Publishing

Introduction The basis of modern oil analysis is the use of optical emission spectroscopy (OES) to measure the ppm (parts per million) levels of wear metals, contaminants and additives in oil samples. Whatever else an oil lab may measure, a multi-elemental analysis is the core of in-service oil analysis. This paper gives an overview of Rotating Disc Electrode Elemental Spectroscopy and its ...

Dec. 20, 2016

By Spectro Scientific

The effect of age and gender on major, minor and trace element contents in the intact rib-bone of 84 apparently healthy 15?58 year-old citizens (38 females and 46 males) of a non-industrial region in the Central European part of Russia was investigated by Instrumental Neutron Activation Analysis (INAA) and Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The summary of ...

Jun. 29, 2010

By Inderscience Publishers

Abstract. An Xact 625 ambient metals monitor was tested during a three-week field campaign at the rural, traffic-influenced site Härkingen in Switzerland during summer of 2015. The objective was to characterize the handling and operation of the instrument, evaluate the data quality by intercomparison with other independent measurements, and test its applicability for aerosol ...

Jan. 18, 2017

By Cooper Environmental Services

The atmosphere may act as an important source of chemical elements for the Atlantic Forest, one of the hottest world biodiversity hotspots. However, chemical responses for chemical element availability are not expected to be equal for each plant species. In this sense, the present work encompasses a baseline study for biomonitoring purposes based on the identification of different strategies of ...

Jun. 29, 2010

By Inderscience Publishers

Markus Furger1,*, María Cruz Minguillón2, Varun Yadav3, Jay G. Slowik1, Christoph Hüglin4, Roman Fröhlich1, Krag Petterson3, Urs Baltensperger1, André S. H. Prévôt1 1Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen 5 PSI, Switzerland 2Institute of Environmental Assessment and Water Research (IDAEA), Consejo Superior de ...

May 22, 2017

By Cooper Environmental Services

Isaac Plains Coal Mine Isaac Plains is an open cut coal mine, in Northern Queensland, Australia. The Isaac Plains Project operates under an Environmental Authority (EA). One of the environmental monitoring requirements which must be met is monitoring water. These include potable water, mine affected water, natural creek flows, water releases, groundwater and the receiving environment. The ...

Jul. 5, 2013

By ANDalyze, Inc.

Monitoring of inorganic environmental pollutants is an ongoing challenge for analytical chemists. To establish the quality of different compartments of our environment (atmosphere, indoor air, water basins, soil, biota) in general a relatively large number of samples must be taken from a given location over the entire duration of sampling.29,30,31 ...

Aug. 2, 2017

By Specac Limited

Tekran provides trace-level mercury analytical and monitoring technology for a variety of applications including laboratory-based sample analysis, continuous point-source emissions and ambient air monitoring. This article focuses on and highlights the results of an application of Tekran’s Ambient Air Mercury Speciation System. In contrast to most other heavy metals, mercury (Hg) and mercury ...

Feb. 14, 2012

By Tekran Instruments Corporation

In recent years, mercury levels in the environment and in the food chain have risen substantially mainly due to human activities. As a long-range pollutant it can affect areas located thousands of kilometers away from its original source of emission. It’s no wonder then that the regulatory pressure to monitor mercury emissions grows stronger.  Before diving ...

Feb. 11, 2018

By Gasmet Technologies Oy

C1.1 | Halogens and Sulfur in Coals and their Influence on Co-benefit Mercury Capture Bernhard Vosteen | President, Vosteen Consulting Gmbh Not only the range of the coal mercury content itself, but also the range of the native halogen and sulfur contents in coal are of great influence on co-benefit mercury capture, wet and dry. The ...

Sep. 20, 2011

By Energy, Utility & Environment Conference (EUEC)

Sulfur compounds are reactive, corrosive to pipes, and destructive to catalysts in petroleum refineries. Sulfur emission are strictly regulated globally. When released into the atmosphere sulfur dioxide converts to sulfuric acid resulting in adverse effects on human health and the environment. Sulfur detection is found useful in many other industries; therefore, detection of sulfur compounds in ...

Nov. 22, 2016

By Restek Corporation