environmental sampling system Articles

  • Life Among The Heavy Metals

    Authors in scientific and applied works interpret the meaning of the concept "heavy metals" in different ways. Today, they include more than 40 chemical elements with an atomic mass of more than 50 atomic units. An important role in the determination of heavy metals is played by the following conditions: their high toxicity in relatively low concentrations, and the ability to bioaccumulation. ...


    By Lumex Instruments Group

  • Biodegradation Tests for Wastewater Samples

    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 and wastewater sources, typical patterns are shown ...


    By Challenge Technology

  • Decontaminating Groundwater Sampling Devices

    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 followed by hot air drying (105°C) was the most ...


    By QED Environmental Systems

  • Ground Water Sampling - A Workshop Summary

    Monitoring purposes have evolved in the past decade reflecting an increasing emphasis on assessment and remedial action performance over detection monitoring. The recognition of many potential contamination sources as well as the regulatory inclusion of a large number of sites in need of investigation have spurred this evolution in practice. New more efficient methods and tools for ...


    By QED Environmental Systems

  • Spatial variability of the Illinois soil nitrogen test: Implications for sampling in a turfgrass system

    Nitrogen fertilization of turfgrass continues to be scrutinized due to environmental concerns. Practices that reduce fertilizer inputs without sacrificing turfgrass quality are needed, but a reliable test of N status in turfgrass is not currently available. The Illinois soil N test has been developed to predict crop response to applied N by measuring the amount of amino sugar N in the soil. Amino ...

  • Setting the standards for headspace sampling by PID

    The responsiveness of PIDs to virtually all VOCs has seen them become the accepted tool for initial site entry assessment, ensuring optimal detection of unknown and often toxic or hazardous chemicals found at hazardous waste sites and chemical emergencies. The speed and accuracy of modern PID equipment means that many worker and community safety concerns during initial and ongoing operations can ...


    By Ion Science

  • Ground Water Sampling for Metal Analyses

    The Regional Superfund Ground Water Forum is a group of ground-water scientists, representing EPA’s Regional Superfund Offices, organized to exchange up-to-date information related to ground-water remediation at Superfund sites. Filtration of ground-water samples for metals analysis is an issue identified by the Forum as a concern of Superfund decisionmakers. Inconsistency in EPA Superfund ...


    By QED Environmental Systems

  • Typing of Legionella strains isolated from environmental samples in Crete, Greece, during the period 2004–2011

    In Greece, standard tests are performed in watering and cooling systems of hotels. A total of 1,494 water samples were collected during 2004–2011 from 124 hotels from four regions in Crete (Greece). Samples were tested for the presence of Legionella spp.; 103 isolates were identified and typed by polymerase chain reaction (PCR)-sequencing and sequence-based typing (SBT) (in case of ...


    By IWA Publishing

  • A Remote Automated Optical Field Sampling System based on the UniSpec-DC equipped with a Wireless System

    For remote locations, a reliable and repeatable field sampling method is needed for monitoring ecosystem processes for various scientific reasons (e.g. ground truthing, link vegetation indices to ecophysiological variables) (Claudio et al., in press; Fuentes et al., in press, Cheng et al., in press). To ensure that the data are collected continuously, and to collect the data during severe weather ...


    By PP Systems

  • Case study - Multilevel sampling and monitoring, Maryland, USA

    Challenges Volatile Organic Compounds contaminated the groundwater posing a risk to nearby private water supply wells. The traditional approach of drilling and sampling multiple boreholes did not provide adequate data to characterize groundwater flow and contaminant migration in the complex fractured bedrock. Solution Westbay System* was installed ...


  • Extracting PCDD/F from Soil and Grass Samples

    We are presenting the use of BÜCHI's Extraction Unit B-811 for isolating polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/F) from solid environmental samples (soil, grass) under standard conditions and by means of hot extraction. The extracts received will be further processed by means of an internationally recognized method and analyzed with high-resolution GC/MS in the single-ion ...


    By BÜCHI Labortechnik AG

  • The 10 Key Factors in Selecting a Stack Sampling Firm

    Summary: This document is a summary of the key factors that you should take into consideration when hiring a stack testing firm.This has been prepared in conjunction with the ASTM criteria for standard practice of testing companies.The ASTM criteria has been supplemented, based on 125 years of direct testing experience, which is the combined years of experience of the individuals that contributed ...

  • Hitting the Bull`s-Eye in Groundwater Sampling

    Many commonly used groundwater sampling techniques and procedures have resulted from methods developed for water supply investigations. These methods have persisted, even though the monitoring goals may have changed from water supply development to contaminant source and plume delineation. Unfortunately, the use of these methods can result in an incorrect understanding of the contaminant ...


    By QED Environmental Systems

  • An analysis of the factors to be considered in the creation of EMAS (eco-management auditing system) competent bodies in a sample of Baltic countries

    This paper analyses the extent to which the Eco-management Auditing System is being used in European countries and presents the results of a survey performed with competent bodies in EU countries. Results which may guide the establishment of EMAS competent bodies in the Baltic region, with a special reference to Estonia, Latvia, Lithuania and Poland are provided.Keywords: environmental ...


    By Inderscience Publishers

  • USEPA Method 8260C using the Tekmar Atomx Automated VOC Sample Prep System and a Thermo Focus/DSQ™ II GCMS

    The United States Environmental Protection Agency (USEPA) developed Method 8260 to determine the concentration of Volatile Organic Compounds (VOCs) in water and soil matrices. USEPA Methods 5030 and 50351 are used to prepare water, soil and waste samples for analysis by USEPA Method 8260. USEPA Method 8260 was recently updated from 8260B to 8260C2. In this study water and soil sample analysis ...


    By Teledyne Tekmar

  • Leader in sample preparation systems benefits from Axetris MFCs’ high dynamic range - Case Study

    Split ratio flexibility of GC injector increased 30-fold A leading manufacturer of analytical sample preparation systems in gas chromatography (GC) switched to Axetris MFCs - and in doing so, simplified their product range, while offering their customers at least 30 times more flexibility in split ratio. The market-leading dynamic range of Axetris mass flow controllers (MFCs)—with ...


    By Axetris Ag

  • Increased sample throughput for ICP-OES applied to U.S. EPA method 200.7

    The application of an SC-FAST sample introduction system to the analysis of natural and certified water samples is described. The SC-FAST system consists of an autosampler, sample loop, switching valve, high efficiency nebulizer and a glass cyclonic spray chamber to perform analysis by direct nebulization. The potential benefits of this introduction system are numerous and include: increased ...


    By PerkinElmer, Inc.

  • Low-Flow (Minimal Drawdown) Ground Water Sampling Procedures

    The Regional Superfund Ground Water Forum is a group of ground-water scientists, representing EPA’s Regional Superfund Offices, organized to exchange information related to ground-water remediation at Superfund sites. One of the major concerns of the Forum is the sampling of ground water to support site assessment and remedial performance monitoring objectives. This paper is intended to provide ...


    By QED Environmental Systems

  • WinLims for environmental laboratories

    There are many different types of environmental laboratories testing diverse and varied samples, such as soils, waters, effluents, emissions, micro swabs, etc. A large proportion of these laboratories operate on a contract basis servicing numerous client companies, whilst others would be internal laboratories providing environmental analysis for the company site or group sites. To be able to ...

  • Sample Handling Strategies for Accurate Lead-In-Soil Measurements in the Field and Laboratory

    ABSTRACT The inhomogenous lead-in-soil matrix can present serious obstacles to accurate sample collection and handling. In typical lead-in-soil measurement, particle size related errors in sampling and sample handling often exceed all other sources of error. The magnitude of error can vary widely depending on the particulate nature of the lead contaminant and the effectiveness of control ...

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