contaminant analysis Articles | Environmental XPRT

Why evaluate hydraulic fluid compatibility?

When introducing a new control fluid to hydraulic systems, it is important to ensure that the new liquid or mixture is of equal or superior quality to the previous fluid. If the new mixture is incompatible, precipitate may form and result in an overall inferior fluid. This can speed up clogging or damage the system. When a manufacturer of construction machinery releases a new line of bulldozers ...

Sep. 7, 2017

By Sterlitech Corporation

Green supply chain parameters for a Canadian petroleum refinery company

This research studies environment dimensions of Canadian petroleum refinery companies. It proposes an analysis of the supply chain and focuses on specific actions related to the following: reduction of contaminants; analysis of the operations process; development of parameters and characteristics that can evolve into a benchmarking system for measuring greenness efforts of petroleum refineries. ...

Apr. 16, 2007

By Inderscience Publishers

Effects of an environmentally relevant polychlorinated biphenyl (PCB) mixture on embryonic survival and cardiac development in the domestic chicken

A 58‐congener polychlorinated biphenyl (PCB) mixture based on contaminant analysis of spotted sandpiper eggs collected along the Upper Hudson River, New York in 2004 was used to study in ovo PCB effects on cardiac development in the domestic chicken. Fertile eggs were injected prior to incubation with the following doses of the PCB mixture: untreated, sham, 0.0, 0.03, 0.08, 0.30, 0.50, 0.70, ...

Feb. 15, 2013

By John Wiley & Sons, Ltd.

Identify plastic contaminants using Microscopy Imaging | Spectroscopy Solutions

Engineered plastic components are ubiquitous in modern society. Plastics have the advantage of lowering cost, reducing parts count and weight, and providing ultimate industrial design flexibility as complicated functional shapes can be easily produced. Engineered plastic components can be filled or reinforced with carbon or other fibers to increase rigidity and strength. Figure 1: IR spectra ...

Sep. 6, 2018

By Specac Limited

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 ...

Jun. 1, 2017

By Applied Spectra, Inc. (ASI)

A possible sanitary risk analysis approach for contaminated sites: fundamentals, computer worksheet implementation, preliminary application

Within the increasing (legislative and applicative) attention to absolute risk analysis for contaminated sites at Italian level, as a University research study and exercise, the definable 'ARA-CoSSSLs' absolute risk analysis approach for human health protection ('Absolute Risk Analysis for Contaminated Sites', on 'Soil Screening Levels' basis) has been derived (as an initial, simplified version) ...

Jul. 23, 2007

By Inderscience Publishers

Source identification of sudden contamination based on the parameter uncertainty analysis

It is important to identify the source information after a sudden water contamination incident occurs in a water supply system. The accuracy of the simulation model's parameters determines the accuracy of the source information. However, it is difficult to obtain the true value of these parameters by existing methods, so reduction of the errors caused by the uncertainty of these parameters is ...

Jul. 13, 2016

By IWA Publishing

Building and breaking a bridge of trust in a Superfund site remediation

Trust is widely recognised as a key variable in perceptions and decision-making about environmental risks. However, most considerations of trust treat it as a simple two-agent relationship. Based on an analysis of a contaminated site cleanup in New Jersey, we identify a more complex construction of trust formed between multiple stakeholders. We refer to this construction as 'bridging'. In the ...

Feb. 22, 2008

By Inderscience Publishers

The Analysis of Trace Elements in Boric Acid by ICP-MS

Until now, the trace analysis of aluminum in boric acid has not been feasible by ICP-MS due to spectroscopic interference by boron oxide and hydroxide. This note describes the use of an ultrasonic nebulizer with membrane desolvator to eliminate both the matrix and water from the sample, thereby removing the interferences. The detection limit obtained for aluminum in 1% boric acid was less than 50 ...

Dec. 1, 1997

By Teledyne CETAC Technologies

Microbiological assessment of private drinking water supplies in Co. Cork, Ireland

The microbiological quality of 75 private drinking water supply boreholes in Co. Cork, Ireland was assessed in order to determine the incidence of contamination and the potential pathways of such contamination. Microbiological analysis was carried out using the membrane filtration technique for the recovery of thermotolerant (faecal) coliforms. The sanitary protection of the supplies was ...

Dec. 1, 2011

By IWA Publishing

Identifying regional groundwater risk areas using a WWW GIS model system

To evaluate the National Agricultural Pesticide Risk Analysis (NAPRA) WWW system (http://pasture.ecn.purdue.edu/~napra), NAPRA WWW predicted nitrate and atrazine losses to shallow groundwater were compared with well nitrate and atrazine data within Indiana. The NAPRA system correctly categorised 84% of the 'High' and 'Very High' nitrate observations, although the predicted nitrate losses are ...

Apr. 24, 2006

By Inderscience Publishers

Organics in boiler water condensate

With the wide use of high efficiency boilers and current high-pressure boilers in industry today limiting condensate analysis to the more traditional parameters can result in very expensive repairs. Condensate return should be the highest quality least expensive water that most systems can generate. Boiler operators do not want to lose this or have it contaminated. Condensate return analysis has ...

Nov. 17, 2008

By LAR Process Analysers AG

Moment analysis for compounds undergoing sequential chain reactions with first-order decay

Temporal and spatial moment analysis of onedimensional equations governing fate and transport of parent compounds along with their transformation products is useful for parameter estimation of model parameters, and for understanding the average attributes of contaminant behavior. The objective of this paper is to present analytical expressions for the lower order moments of members in a ...

Oct. 11, 2005

By Springer-Verlag GmbH

Logistic regression analysis to estimate contaminant sources in water distribution systems

Accidental or intentional contamination in a water distribution system (WDS) has recently attracted attention due to the potential hazard to public health and the complexity of the contaminant characteristics. The accurate and rapid characterization of contaminant sources is necessary to successfully mitigate the threat in the event of contamination. The uncertainty surrounding the contaminants, ...

Jul. 1, 2011

By IWA Publishing

The Alberta Swan Hills Special Waste Treatment Centre expansion: environmental concerns

This article examines the establishment and recent expansion of the high technology special Waste Management Treatment Centre at Swan Hills, Alberta. The focus is on a number of deficiencies in the expansion application and potential negative environmental impacts that may have been inadequately assessed by the review process then existing. These concerns include weaknesses in site geology, ...

Sep. 17, 2009

By Inderscience Publishers

A Novel Approach to Increase Sample Throughput on a CVAA Mercury Analyzer using an Injection Valve

ABSTRACT Mercury determination in soil plays a crucial role in agri‐ culture, environmental status, and human health. The de‐ tection of mercury allows for long‐term and short‐term analysis of each of these systems, and it gives information on specific sources of mercury contamination. The analysis of soil yields quantitative data for water quality, air quali‐ ty, ...

Apr. 20, 2016

By Teledyne CETAC Technologies

Social amplification of risk and environmental collective activism: a case study of Cobalt-60 contamination incident in Taiwan

This paper employs an integrated framework – social amplification of risk – to study the incident of Cobalt-60 radioactive contamination in residences in Taiwan. Here, local collective actions were briefly resident-driven and the broader movement was subsequently dominated by activists who had never been directly impacted. The author utilises a qualitative case study that draws upon in-depth ...

Feb. 22, 2008

By Inderscience Publishers

Sequential extraction combined with isotopic analysis as a tool for studying lead contamination from mining activity

Tailings deposits generated from mining activities constitute a potential risk to the environment through leaching of potentially toxic elements hosted by a variety of minerals present in the mine-waste materials. In the present work, in an attempt to study the potential mobility of lead in different type of Pb-Zn ore concentrate residues and its environmental impact, a sequential extraction ...

Dec. 2, 2009

By Inderscience Publishers

Development of quality objectives for contaminated sites: state of the art and new perspectives

Local soil contamination, mainly associated with industrial facilities (both in operation and after closure), uncontrolled (industrial and/or municipal) waste landfills, mining and diffused leaching underground storage tanks and pipelines, is an actual and relevant environmental priority in Europe. Different approaches have been applied in the European countries during the past few years to ...

Jan. 30, 2007

By Inderscience Publishers

A fuzzy multi-criteria decision analysis approach for the management of petroleum-contaminated sites

This paper presents an effective Fuzzy Multi-Criteria Decision Analysis (FMCDA) approach for contaminated site management. The development was based on: selecting eight criteria for remedial alternative evaluation and determining the weight of criteria importance under uncertainty; addressing various uncertainty issues in remedial alternative assessment process using a fuzzy-set approach based on ...

Aug. 2, 2010

By Inderscience Publishers

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