environmental samples Articles

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Drinking Water Analysis Guide

by Shimadzu Scientific Instruments Inc  (Aug. 3, 2015)

Public Water Systems (PWS), regulated by the United States Environmental Protection Agency (USEPA), provide drinking water to 90% of Americans. Water systems and laboratories testing drinking water for Safe Drinking Water Act (SDWA) compliance must be certified and must use USEPA approved methods, which are developed by the USEPA, other ...

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 ...

National Mixed Rigid Plastic Bale Composition Study

by Association of Postconsumer Plastics Recyclers (APR)  (Aug. 4, 2015)

Executive Summary - Summer 2015 Overview of the APR Rigid Plastics Recycling Committee The Association of Post Consumer Plastics Recyclers (APR), North America’s largest alliance of plastics reclaimers, represents companies totaling over 94% of the post-consumer plastic recycling processing capacity.   APR is constantly seeking ...

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  (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 ...

Theoretical Considerations on the use of solid-phase microextraction with complex environmental samples

by Southern California Coastal Water Research Project Authority (SCCWRP)  (Jan. 1, 2002)

Untitled Document The equations governing the use of equilibrium solidphase microextraction (SPME) for environmental samples with complex heterogeneous matrices were derived in terms ...

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 ...

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