environmental samples Articles

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Shimadzu Guide to US EPA Method 8260 for analysis of volatile organic compounds in groundwater and solid waste

by Shimadzu Scientific Instruments Inc  (Jul. 1, 2015)

Environmental contamination has been at the forefront of government policy and regulation since the US EPA was established in 1970. Over the years the US EPA has developed, published, and updated multiple methods for analysis of environmental pollutants, and single-quadrupole gas chromatography-mass spectrometry (GC/MS) has long been the ...

Surface Decontamination of Zinc Compounds (Elemental Zinc Powder (Zn), Zinc Oxide (ZnO), and Zinc Acetate (Zn(O2CCH3)2) by DeconGel 1101

by METIS Scientific  (Jun. 29, 2015)

Abstract Surface decontamination efficacy determination of DeconGel™ 1101 on stainless steel, carbon steel, and concrete surfaces contaminated with zinc compounds (elemental zinc powder (Zn), zinc oxide (ZnO), and zinc acetate (Zn(02CCH3)2)) was performed with ICP-OES (Inductively Coupled Plasma-Optical Emission Spectroscopy) according to ...

Water monitoring for remediation - Case Study

by Ecotech Pty Ltd  (Jun. 12, 2015)

Customer: Rainbow Group and T95C Application: Portable water sampling Background: Established in 1985, Rainbow Group are environmental demolition and civil engineering contractors based in Padstow, NSW. Their services include construction, excavation, demolition, remediation and water treatment. Rainbow Group has a renowned ...

Evolution of Data Management at Antea Group

by EarthSoft, Inc  (Jul. 2, 2015)

Background Antea Group (Delta Environmental) thrived in the atmosphere of the 90’s UST boom Retail petroleum focused for many years Project teams were local/regional with little resource sharing An Enterprise Solution was needed Began with EQuIS on a remote desktop platform Enterprise was ...

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 ...

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 ...

Decontaminating Groundwater Sampling Devices

by QED Environmental Systems, Inc.  (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 ...

SupelMIP SPE for Sample Cleanup and Analysis of Food and Environmental Contaminants

by Sigma-Aldrich Co., LLC  (Sep. 5, 2013)

MIP SPE was successfully used for extraction of multiple classes of food and environmental contaminants from difficult matrices, such as egg, oil and flour. • Six nitroimidazoles were extracted from egg and milk with recoveries typically over 90%. • Among NSAIDs compounds, acidic compounds gave good recoveries between 100-115% while ...

Fast Analysis of Environmental Samples, Using Solid-Phase Microextraction (SPME)

by Sigma-Aldrich Co., LLC  (Dec. 31, 1998)

Solid Phase MicroExtraction (SPME) is an alternative to conventional sample extraction techniques. In SPME, analytes establish an equilibrium between the sample matrix and a stationary phase coated on a fused silica fiber (Figure A). The fiber is thermally desorbed in the injection port of the GC, which transfers the analytes into the capillary ...

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