polycyclic aromatic hydrocarbon Articles
-
Evaluating the aquatic toxicity of complex organic chemical mixtures: Lessons learned from polycyclic aromatic hydrocarbon and petroleum hydrocarbon case studies
Experimental designs for evaluating complex mixture toxicity in aquatic environments can be highly variable and, if not appropriate, can produce and have produced data that are difficult or impossible to interpret accurately. We build on and synthesize recent critical reviews of mixture toxicity using lessons learned from 4 case studies, ranging from binary to more complex mixtures of primarily ...
-
Achieve Exceptional Resolution of PAHs, Including Several Isomer Sets Using SLB®-ILPAH Capillary GC Columns
originally published in Supelco®'s Analytix Reporter Journal Issue 1 2018 by Merck KGaA, Darmstadt, Germany Visit SigmaAldrich.com/ar-reg Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous in the environment. They belong to a group known as persistent organic pollutants (POPs). Monitoring is important because they are identified as carcinogens. Multiple isomers exist, which are ...
-
Screening of organic contaminants in urban snow
Snowmelt is known to cause peak concentrations of pollutants, which may adversely affect receiving water quality. High concentrations of metals and suspended solids in snow have been reported, whereas studies on organic pollutants are rare. This study aims at investigating the occurrence of anthropogenic organic compounds in urban snow in Gothenburg (Sweden). The most frequently detected organic ...
-
Heavy metals, PAHs and toxicity in stormwater wet detention ponds
Concentrations of 6 different heavy metals and total polycyclic aromatic hydrocarbons (PAHs) were determined in stormwater runoff and in the pond water of two Danish wet detention ponds. The pond water samples were analyzed for toxic effects, using the algae Selenastrum capricornutum as a test organism. Stormwater and pond water from a catchment with light industry showed high levels of heavy ...
-
An approach for calculating a confidence interval from a single aquatic sample for monitoring hydrophobic organic contaminants
The use of passive sampling devices (PSDs) for monitoring hydrophobic organic contaminants in aquatic environments can entail logistical constraints that often limit a comprehensive statistical sampling plan, thus resulting in a restricted number of samples. The present study demonstrates an approach for using the results of a pilot study designed to estimate sampling variability, which in turn ...
-
Elimination of trace organics in an MBR/RO system for water reuse
An intensive programme for detection of trace organics was performed in a membrane bioreactor (MBR) plant in Almuñécar (south of Spain) over 1 year. The compounds investigated included 15 pharmaceutically active compounds, 12 polycyclic aromatic hydrocarbons and eight other compounds (nonylphenols, linear alkylbenzene sulphonates and phthalates). The MBR operated with two lines in ...
-
Quantifying the concentration of crude oil microdroplets in oil–water preparations
Dissolved constituents of crude oil, particularly polycyclic aromatic hydrocarbons (PAHs), can contribute substantially to the toxicity of aquatic organisms. Measured aqueous concentrations of high–molecular weight PAHs (e.g., chrysenes, benzo[a]pyrene) as well as long‐chain aliphatic hydrocarbons can exceed the theoretical solubility of these sparingly soluble compounds. This is attributed to ...
-
Detection of semi-volatile organic compounds (SVOCs) in surface water, soil, and groundwater in a chemical industrial park in Eastern China
China is suffering from serious water and soil pollution, especially in the North China Plain. This work investigated semi-volatile organic compounds (SVOCs) in surface water, groundwater and soil within a chemical industrial park in Eastern China, for which the volatile organic compound (VOC) results have been previously reported. A total of 20 samples were collected from the field, and ...
-
Profile: Some Factors Affecting SPME Analysis and PAHs in Philadelphia`s Urban Waterways
The main points covered in the paper are (1) to clarify some important aspects of the analytical method with solid phase micro extraction (SPME) and (2) to demonstrate a way of studying persistent organic pollutants in aquatic environment. These points are particularly interesting because the development of environmental science largely depends on the development of suitable analytical methods ...
-
Priority substances in combined sewer overflows: case study of the Paris sewer network
This study was undertaken to supply data on both priority pollutant (PP) occurrence and concentrations in combined sewer overflows (CSOs). A single rain event was studied on 13 sites within the Paris sewer network. For each sample, a total of 66 substances, including metals, polycyclic aromatic hydrocarbons (PAHs), pesticides, organotins, volatile organic compounds, chlorobenzenes, phthalates and ...
-
Development of a low‐density polyethylene‐containing passive sampler for measuring dissolved hydrophobic organic compounds in open waters
A passive water sampler with low‐density polyethylene (LDPE) as the sorbent phase was built and field‐tested for sensing freely dissolved concentrations of hydrophobic organic compounds (HOCs) in fresh and coastal water. Based on the measured LDPE–water partition coefficients (Kpew) of 12 polycyclic aromatic hydrocarbons (PAHs) and dichlorodiphenyltrichloroethane (DDT) and its seven metabolites, ...
-
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 ...
-
Multispecies acute toxicity evaluation of wastewaters from different treatment stages in a coking wastewater‐treatment plant
Coking wastewater contributes approximately 5% of the total discharge volume of industrial wastewaters every year in China. The toxicity of coking wastewater to aquatic organisms is still unknown. The authors evaluated the toxicity of wastewater from different treatment stages in a coking wastewater treatment plant, South China, using 5 test species belonging to different trophic levels: ...
-
Using a modified dredging elutriate testing approach to evaluate potential aquatic impacts associated with dredging a large freshwater industrial Harbour
Potential adverse impacts to the aquatic environment should be minimized whenever possible during an environmental dredging project by selecting realistic and technically feasible environmental targets. These targets need to balance short term impacts with the longer term benefit of removing contaminated sediments from the environment. Environmental dredging is part of the planned remediation ...
-
Can roadway design air quality impacts
In recent years, a consensus has emerged that exposure to traffic emissions increases risks of adverse health effects for populations living, working, or going to school near large roadways.1-4 Near-roadway air pollution is characterized by elevated levels of trafficgenerated compounds compared to overall urban background levels with the gradual decrease in concentrations within several hundred ...
-
A Dynamic Site Investigation: Adaptive Sampling and Analysis Program for Operable Unit 1 at Hanscom Air Force Base, Bedford, Massachusetts
Abstract In this study, field analytical instrumentation and methods were used to support a risk assessment study at the airfield at Hanscom Air Force Base (HAFB, Bedford, Massachusetts). The site investigation is part of an ongoing effort to determine contaminant risk to ground water from soil. The field tools supported a dynamic workplan/adaptive sampling and analysis demonstration. Over a ...
-
European Union emission inventory report 1990–2009 under the UNECE Convention on Long-range Transboundary Air Pollution (LRTAP)
This report and its accompanying data are provided by the European Commission (on behalf of theEuropean Union) as an official submission to the secretariat for the Executive Body of the LRTAP Convention. The report provides information on the formal institutional arrangements that underpin the European Union's emission inventory (Chapter 1);emission trends reported by Member States, and the ...
-
European Union emission inventory report 1990–2010 under the UNECE Convention on Long-range Transboundary Air Pollution (LRTAP)
This document is the annual European Union (EU) emission inventory report under the United Nations Economic Commission for Europe (UNECE) Convention on Long-range Transboundary Air Pollution (LRTAP) (UNECE, 1979). The report and its accompanying data are provided as an official submission to the Executive Secretary of UNECE by the European Commission on behalf of the EU as a Party. The report is ...
-
TESTEX AG, Zürich, Switzerland - Case Study
"The SpeedExtractor in combination with Syncore®makes day-to-day work in the laboratory easier due to unmatched ease of use and efficiency. The parallel design of both instruments allows for fast analysis during a working day. It is the key for cost-efficient analytical methods at a high quality level, performed in a short time.” Customer name Dr. Saverio Iozza, Team Leader, TESTEX AG ...
By BUCHI
-
Effect of activated carbon or biochars on toxicity of different soils contaminated by mixture of native polycyclic aromatic hydrocarbons and heavy metals
Activated carbon (AC) and biochars (BCS and BCW) were added to the soils sampled from areas of strong anthropogenic influence at doses of 0.5, 1, 2.5 or 5% (w/w) and incubated for two months. At the end of this period, the toxicity of the soils was measured. The effect of AC and biochars on the toxicity of the soils varied based on soil, type of amendment, dose and test organism. For most of ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you