Showing results for: organics analyzer Articles
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Mathematical modelling of nanoparticle biodistribution: extrapolation among intravenous, oral and pulmonary administration routes
In this study, a physiological-based mathematical model was developed to describe and compare the absorption, distribution, metabolism, and elimination (ADME) of nanoparticles after intravenous (IV), oral, and pulmonary exposure. The development of the model was based on physiological principles, compartmental analysis, and mathematical modelling. The human body was separated into compartments ...
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Functions of COP side-events in climate-change governance
Side-events are the most visible venue for civil society involvement in international climate negotiations. The many varied functions that side-events fulfil for participants and organizers are identified and analysed for their contributions generally as well as for their contribution to the negotiation process. The analysis is based on two surveys of over 2,000 side-event participants and ...
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Assessing toxicity of contaminants in riverine suspended sediments to freshwater mussels
The Clinch River in Virginia and Tennessee, USA, is well known for its diverse native freshwater mussel assemblages; however, notable declines in mussel populations in recent decades have prompted much concern and subsequent research. The authors examined the toxicity of recently‐deposited sediments on juveniles of the freshwater mussel Epioblasma brevidens, by collecting time‐integrated ...
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ASSET Laboratories Las Vegas - Case Study
ASSET Laboratories is a full-service environmental analytical laboratory. A wide range of analytical services is available at ASSET Laboratories including the organic and inorganic analyses of water, groundwater, storm water, wastewater, soil and hazardous waste samples. They are using Nutech 8900DS Preconcentrator and 3603 Autosampler at their lab in Las Vegas. ...
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Characterization of organic fouling in reverse osmosis membranes by headspace solid phase microextraction and gas chromatography–mass spectrometry
Adsorption of organic substances on reverse osmosis (RO) membrane surfaces may form an organic film on the membrane, known as organic fouling, and cause flow-rate loss. This problem is mostly unavoidable as no pretreatment method exists for perfect removal of possible foulants, including organic compounds resulting from undesirable bioactivity. Understanding the characteristics of fouling ...
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The influence of reaction conditions in the oxidation of organic compounds of nuclear laundry water by ozone
This paper presents a summary of degrading organic compounds of nuclear laundry water by ozonation in different conditions of pH, hydrogen peroxide and ultraviolet radiation. The degradation of organic compounds was analysed by chemical oxygen demand (COD), total organic carbon (TOC) and biochemical oxygen demand (BOD). The optimal degradation conditions were at pH 7 with ozone, UV radiation and ...
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Measuring total organic carbon in wastewater
The continuous TOC analysis of industrial waste water is known to be problematic especially, when the TOC analyser is used as a spill monitor for heavily polluted waste water containing a high-load of particles. Thus, most operators require analysers that enable accurate TOC (total organic carbon) measurements. But do they really get those? Common analysers suffer from clogging and blockages due ...
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Impact of catchment properties on aquatic chemistry in the rivers of Latvia
The relationships between land use characteristics and aquatic chemistry (nutrient concentrations, major inorganic ions and indicators of organic matter concentrations) were analyzed to determine factors controlling the runoff of dissolved substances, spatial variability of water chemical composition and possible impacts of pollution sources in Latvia. Groups of factors were found to determine ...
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Analysis of build-up of heavy metals and volatile organics on urban roads in gold coast, Australia
Urban water quality can be significantly impaired by the build-up of pollutants such as heavy metals and volatile organics on urban road surfaces due to vehicular traffic. Any control strategy for the mitigation of traffic related build-up of heavy metals and volatile organic pollutants should be based on the knowledge of their build-up processes. In the study discussed in this paper, the ...
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Laboratory study on the impact of pH and salinity on the fluorescence signal of Natural Organic Matter (NOM) relevant to groundwaters from a Canadian Shield sampling site
Fluorescence spectroscopy with the spectral resolution routine PARAFAC is a leading tool to analyze Natural Organic Matter (NOM) in waters. This routine resolves spectra into humic-, fulvic- and protein-like components, which helps interpret the NOM dynamics in environmental systems. This work is one of the first systematic studies dealing with the impact of chemical perturbations on the ...
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Achieving ppt Levels of environmental volatiles with a new Headspace Sampler
Introduction This study focuses on the Versa Automated Headspace Analyzer and its ability to analyze Volatile Organic Compounds (VOCs) in water at the part per trillion (ppt) level. Read the full article Click ...
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Choosing the appropriate TOC analyzer for your application?
Abstract In choosing a Total Organic Carbon (TOC) analyzer, among the many factors that need to be given consideration are not only the current instruments and their accessories available on the market, but specifically to their method of sample oxidation in relation to the sample matrix. Different oxidation techniques may affect the analytical data due to the components within the sample matrix. ...
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Materiality Case Study: Carnival Corporation & plc
In 2014, Carnival Corporation & plc conducted an analysis to reevaluate the significant economic, environmental and social aspects of its operations, to further assess the relative impacts of these aspects, as well as to determine the required components to transition from GRI-G3.1 to GRI-G4 sustainability reporting. Known as a “materiality assessment”, this analysis enables the ...
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Baseline groundwater quality in unconventional oil and gas fields
In recent years, expansion of unconventional oil and gas production has prompted significant interest in potential impacts on drinking water resources. In many cases, water quality investigations rely on access to landowner water wells to develop baseline data prior to drilling; respond to spills, complaints, or incidents; or evaluate potential impacts due to drilling, completion, hydraulic ...
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4 Best Practices for Leading Metrics
The ECA Academy shared that in 2016, most GMP inspection deficiencies involved quality systems—more specifically, the Corrective and Preventive Action (CAPA) process. A closer look revealed that root cause analysis and impact assessment are still a challenge for many organizations. These organizations struggle with taking measures to prevent recurrence of adverse events. A possible ...
By EtQ, LLC
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BCORP: Towards An Ethical, Sustainable And Technological Economy
The business ecosystem is changing and is beginning to focus on an alternative economy. The mission of companies is no longer limited to maximizing their profits, but now new values are beginning to prevail focused on building a more equitable, more inclusive and more sustainable economy for the planet… and for people. In this sense, companies from all over the world have embarked on a ...
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Sustainable Business Model Innovation: A Brief Overview
For years, the business sector and the government have shared a co-dependent relationship. To put it more precisely, almost all countries decided to adopt a capitalistic model while they were designing their economic structures, which automatically elevated the importance of organizations, businesses, industries, and enterprises. The growth and development of society are highly dependent on the ...
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TOC Determination in Solid Samples using the Suspension Method
The TOC content in solids plays an important role in the classification of soils, sludges and sediments. According to the German Ordinance on Environmentally Compatible Storage of Waste from Human Settlements, TOC in solid materials is one of the key parameters for the characterization of wastes as part of the acceptance control of landfills. This important control measure requires a fast and ...
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Trace organics removal using three membrane bioreactor configurations: MBR, IFAS-MBR and MBMBR
Seventeen pharmaceutically active compounds and 22 other trace organic pollutants were analysed regularly in the influent and permeate from a semi-real plant treating municipal wastewater. The plant was operated during 29 months with different configurations which basically differed in the type of biomass present in the system. These processes were the integrated fixed-film activated sludge ...
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What is in e-cig liquid?
In a recent white paper, Restek corporation identified a simple methodology for the simple comparison of e-cigarette liquids using GC-MS and GC-FID. E-cigarettes have been a fairly recent phenomenon. An alternative to smoking tobacco, e-cigarettes work by vaporizing a liquid which is then inhaled by the user. Despite only being available to the market for a few years, e-cigarettes are thought to ...
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