environmental samples Articles

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Sustainable sampling of native bromeliads for environmental monitoring

by Inderscience Publishers  (Jun. 30, 2010)

By analysing the leaves of bromeliads, the availability of chemical elements in the atmosphere can be assessed. However, sampling steps affect the reliability of using such plants for environmental quality studies. This paper describes a novel and sustainable sampling methodology for conservation units, in which small discs (6 mm diameter) of ...

Concentration and solvent recovery of environmental samples in dichloromethane

by BÜCHI Labortechnik AG  (Feb. 2, 2015)

Environmental samples are usually extracted with an organic solvent which is then concentrated prior to final analysis. In this short note, initial conditions and evaporation settings for the parallel concentration of samples dissolved in dichloromethane (DCM) having different starting volumes are presented. These settings have been optimized for ...

Ambient Air Sampling Methods

by Perfect Pollucon Services  (May 3, 2015)

Pollutants are nothing but any substance that may present in an atmosphere in such a concentration that it may harmful to surrounding, living organism or human being. Sampling and analysis of air pollutants is known as Air quality monitoring and it is major part of environmental monitoring. There are many advanced types of ambient air ...

Decontaminating Groundwater Sampling Devices

by QED Environmental Systems  (Jan. 1, 1997)

These studies are the second part of a two year project that examines decontaminating groundwater sampling devices. In the first year, the efficiency of various decontamination protocols was tested using small test pieces of materials that are commonly used in groundwater sampling devices. Those tests showed that a hot detergent wash and rinse ...

Biodegradation Tests for Wastewater Samples

by Challenge Technology  (Jan. 1, 2003)

Biodegradation Tests for Wastewater Samples Biodegradation tests usually involve comparison of the oxygen uptake of a test sample – or gas production for anoxic or anaerobic tests – to that for a readily biodegradable control substrate (usually acetic acid, ethanol, or aniline). While biodegradation characteristics can vary among chemical types ...

A new approach based on polynomial functions for measuring the acute toxicity of environmental samples

by Inderscience Publishers  (Jan. 30, 2007)

In this paper, a new mathematical approach for the estimation of acute toxicity in environmental samples is proposed. The concentration of pollutant or the amount of sample producing the inhibition of 50% of the living organisms used for the test (EC50) is determined by means of Polynomial Functions (PF) applied to the experimental x ...

A simple, efficient method for the separation of humic substances and DNA from environmental samples

by American Society for Microbiology  (Dec. 1, 1997)

Three different gels (Sepharose 4B, Sephadex G-200, and Sephadex G-50) were evaluated as a means of removing humic contaminants from DNA extracts of environmental samples. Sepharose 4B gave superior separation of DNA from humics, and DNA purified in this way showed consistently greater amplification than DNA purified by the other ...

Book Review: Fundamentals of Environmental Sampling and Analysis by Chunlong Zhang

by Inderscience Publishers  (Nov. 21, 2008)

Fundamentals of Environmental Sampling and Analysis, by Chunlong Zhang. New York, John Wiley and Sons, 2007. 436pp. ISBN 978-0-471-71097-4Keywords: book ...

Detection of Bacillus anthracis spores in postal and environmental samples in cases of suspected bioterrorism

by Inderscience Publishers  (Nov. 8, 2007)

From October 2001 to the end of 2004, a series of postal samples containing material suspected of containing Bacillus anthracis spores were examined. Environmental samples from dwelling places of some addressees and laboratory areas, including equipment, were also examined. Classical culture methods for isolation and identification were slightly ...

Book Review: Field Sampling: Principles and Practices in Environmental Analysis

by Inderscience Publishers  (Jul. 31, 2006)

Field Sampling: Principles and Practices in Environmental Analysis, by Alfred R. Conkling Jr. Marcel Dekker, 2004. 354pp. ISBN 0-8247-5471-9Keywords: book ...

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