contaminant sampling Articles
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Materials used in Wildco Van Dorn bottles
Metal parts are 304 or 316 stainless steel and are rugged, durable and lack contaminating organics. Nonmetals are flexible, blue polyurethane; rigid, white ASA plastic with silicone gasket; transparent acrylic; and opaque PVC. Internal parts are nonmetallic. Plastic samplers may use some external metal parts for durability and rigidity. Alpha™ seal – Blue, flexible polyurethane ...
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Histochemical properties and trace element concentrations in Parietaria L.from urban sites (Palermo, Italy)
We examined leaf and pollen histochemical properties in Parietaria L. and measured trace element concentrations in urban sites in Palermo, Sicily, affected by different stress valence levels. Urban pollution affects histochemistry macro-, micro-, and toxic element concentrations in Parietaria. We therefore decided to determine whether this plant can be used as a simple biomonitor or ...
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Evaluation of an MPN test for the rapid enumeration of
Pseudomonas aeruginosa in hospital watersIn this study, the performance of a new most probable number (MPN) test (Pseudalert®/Quanti-Tray®) for the enumeration of Pseudomonas aeruginosa from hospital waters was compared with both international and national membrane filtration-based culture methods for P. aeruginosa: ISO 16266:2006 and UK The Microbiology of Drinking Water – Part 8 (MoDW Part 8), which both use ...
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Contaminated Soil Sampling Method
What is Contaminated Soil Sampling? Use of a proper contaminated soil sampling method is vital to obtain a representative sample of soil waste. A representative sample of soil waste is necessary to accurately characterize (hazardous or non-hazardous) your stabilized waste piles. If improperly conducted, valuable time and resources may be wasted by contractors, generators and consultants. The ...
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Best Known Method for Clean Fluid Sampling to Get Consistent Measurements During Offline Particle Analysis
Abstract A complete chemical quality monitoring program includes data gathered from the time chemicals are received all the way to the point of process. Throughout this monitoring program, the best known method (BKM) which provides optimal data quality and time resolution is continuous in-line monitoring. However, physical and environmental challenges posed by some chemicals and how they are ...
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Evaluating cost when selecting performance reference compounds (PRCs) for the environmental deployment of polyethylene passive samplers
A challenge in environmental passive sampling is determining when equilibrium is achieved between the sampler, target contaminants, and environmental phases. A common approach is the use of performance reference compounds (PRCs) to estimate target contaminant sampling rates and indicate degree of sampler equilibrium. One logistical issue associated with using PRCs is their sometimes exorbitant ...
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A case of enzyme immunoassay validation for the determination of clenbuterol residues in bovine urine
Using the method of standard addition, a commercial EIA for qualitative screening of clenbuterol in bovine urine was validated. The method was robust on the influence of external factors. The recovery was 167.86% and CCβ 618.86 ng/L, and should be considered by presentation of quantitative results. Due to high crossreactivity, high responses are expected in test samples, contaminated with other ...
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Chemical Pollutants in Water Emerge
Recent advances in contaminant identification methodologies, sampling instrumentation, and analytical chemistry have caused an explosion of knowledge about the presence of previously undetected organic micropollutants. While it doesn’t follow that the mere presence of chemical contaminants results in harm, public health experts, regulators, and others aren’t sitting idly ...
By Acta Group
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Low-Flow Groundwater Sampling- Techniques Improve Sample Quality and Reduce Monitoring Program Costs
Ground water is often sampled to determine its water chemistry, to see if the water is acceptable for human consumption, or to sec if industrial activity may have caused contamination. Sampling ground water from monitoring wells has traditionally involved "purging" the well to remove stagnant water that may not be representative of in situ ground water quality. Regulatory guidance often ...
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Optimized Molecular Contamination Monitoring for Lithography
Abstract A new approach to monitoring molecular contamination in lithography is presented. Recent technical advances have made it feasible to perform continuous real-time monitoring with significant advances in sensitivity and stability while minimizing sample tubing effects. These improvements are realized by using a small, low-cost monitor that is dedicated to monitoring a single location. ...
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Remediation of PCE belowgrade in an active alley southside Chicago, IL
Under contract to Malcolm Pirnie, TRS Group, Inc. (TRS) designed, installed and operated the ERH remediation system at this dry cleaner facility in an active alley behind a shopping mall. The goal of the remediation project was to reduce tetrachloroethene (PCE) concentrations in soil to less than 11 milligrams per kilogram (mg/kg). While site soil also contained other chlorinated volatile organic ...
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Featured Article on Laser Ablation Chemical Analysis – LIBS, LA-ICP-MS/OES, and LAMIS
Laser ablation is a powerful approach to chemical analysis because of its versatility. It has advantages in chemical analysis including direct characterization of solids, no chemical procedure of dissolution, which reduces the risk of contamination or sample loss, analysis of very small samples not separable from solution analysis, and determination of spatial distribution of elemental ...
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Evaluation Of Toxic Effects Exhibited By Organic Pollutants Present In Soil
Abstract: Bioassays are widely applied to measure toxic effects of aquatic samples such as surface water and groundwater, leachates and elutriates, as well as sediments, sludges, and soils. Contrary to (eco)toxicity tests, which translate single chemical concentrations into toxic effects (dose-response relationship giving NOEC, EC50, etc.), bioassays are applied to samples from contaminated ...
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Monitoring radioactivity in nuclear and radiological emergency in a European perspective: aims and means
After the Chernobyl nuclear power plant accident, European countries have further enhanced their capacity and infrastructure for monitoring radioactivity in their environment. This paper gives a summary of the most commonly used techniques relevant to routine and nuclear and/or radiological emergency conditions, followed by a discussion of the various network types (routine, emergency ...
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Titanium as an indicator of residual soil on arid-land plants
Titanium (Ti) has been suggested as a soil contamination indicator for plant samples slated for trace element analysis because it is abundant in soil but not in plants. Based on results from our survey of regional soils and plants for cesium (Cs), we sought to confirm Ti as a valid soil contamination indicator reasoning that there are three sources of Ti associated with plant samples: (i) ...
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Comparative evaluation of collectors for metal removal by precipitation/flotation
This paper describes a comparative evaluation of collectors for metal removal by precipitation/flotation in samples of wastewaters from an electroplating industry. Precipitation/flotation was found to be successful over a great range of pH (3-12). The toxic metal ions lead (II), nickel (II), tin (II), iron (II) and aluminium (III) were stripped from contaminated industrial samples to ...
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Drinking Water Analysis Guide
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 government agencies, universities, consensus method ...
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TECTA B16 Success Story - Tampa Bay SWTP - Case Study
TECTA Automated Microbiological Testing System Being Used Successfully at a Surface Water Treatment Plant in Tampa, FL. The TECTA automated microbiological testing system has received an enthusiastic welcome, where it is being used for operational testing for E. coli and Total Coliform bacteria in both raw and fi nished water samples. The TECTA system has the unique capability to continuously ...
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A Compact, Low-Power In-Situ Flow Analyzer for Marine Applications
A New Tool for In-Situ Analysis is Implemented On an Automated Buoy in the Mediterranean Sea Continuous monitoring of highly dynamic systems like coastal waters requires frequent sampling in a precise place in order to catch short-term events that might have a strong impact on the ecosystem, such as exceptional phytoplankton blooms or changes caused by storms. The lack of monitoring systems that ...
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The sample preparation process with an homogenizer, everything about the quality of sampling
The sampling process is essential for the preparation of samples in sectors such as food, cosmetics, pharmaceuticals, and clinics. This process is divided into several sections, and, the first of them, is sample preparation. The homogenization is a sample preparation process widespread in the microbiology field. Before performing an analysis, the sample is homogenized in order to obtain a ...
By IUL S.A.
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