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Environmental organic chemistry

TL;DR: An Introduction to Environmental Organic Chemicals is given in this article, where the authors present an overview of the main steps in the development of these processes, including the following: Sorption I: General Introduction and Sorption Processes Involving Organic Matter. Sorption II: Partitioning to Living Media - Bioaccumulation and Baseline Toxicity.
Abstract: Preface. Part I: Introduction. 1. General Topic and Overview. 2. An Introduction to Environmental Organic Chemicals. Part II: Equilibrium Partitioning Between Gaseous, Liquid, and Solid Phases. 3. Partitioning: Molecular Interactions and Thermodynamics. 4. Vapor Pressure. 5. Activity Coefficient and Solubility in Water. 6. Air-Organic Solvent and Air-Water Partitioning. 7. Organic Liquid-Water Partitioning. 8. Organic Acids and Bases: Acidity Constant and Partitioning Behavior. 9. Sorption I: General Introduction and Sorption Processes Involving Organic Matter. 10. Sorption II: Partitioning to Living Media - Bioaccumulation and Baseline Toxicity. 11. Sorption III: Sorption Processes Involving Inorganic Surfaces. Part III: Transformation Processes. 12. Thermodynamics and Kinetics of Transformation Reactions. 13. Chemical Transformations I: Hydrolysis and Reactions Involving Other Nucleophilic Species. 14. Chemical Transformations II: Redox Reactions. 15. Direct Photolysis. 16. Indirect Photolysis: Reactions with Photooxidants in Natural Waters and in the Atmosphere. 17. Biological Transformations. Part IV: Modeling Tools: Transport and Reaction. 18. Transport by Random Motion. 19. Transport Through Boundaries. 20. Air-Water Exchange. 21. Box Models. 22. Models in Space and Time. Part V: Environmental Systems and Case Studies. 23. Ponds, Lakes, and Oceans. 24. Rivers. 25. Groundwater. Appendix. Bibliography. Index (Subject Index, Compound Index, List of Illustrative Examples).
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Journal ArticleDOI
TL;DR: The slow pace of hazardous waste remediation at military installations around the world is causing a serious delay in conversion of many of these facilities to civilian uses as discussed by the authors, which is a serious problem.
Abstract: The civilian, commercial, and defense sectors of most advanced industrialized nations are faced with a tremendous set of environmental problems related to the remediation of hazardous wastes, contaminated groundwaters, and the control of toxic air contaminants. For example, the slow pace of hazardous waste remediation at military installations around the world is causing a serious delay in conversion of many of these facilities to civilian uses. Over the last 10 years problems related to hazardous waste remediation have emerged as a high national and international priority.

17,188 citations

Journal ArticleDOI
25 Aug 2006-Science
TL;DR: There are three scientific challenges in addressing water-quality problems caused by micropollutants, and usage and disposal strategies should aim to minimize introduction of critical pollutants into the aquatic environment.
Abstract: The increasing worldwide contamination of freshwater systems with thousands of industrial and natural chemical compounds is one of the key environmental problems facing humanity. Although most of these compounds are present at low concentrations, many of them raise considerable toxicological concerns, particularly when present as components of complex mixtures. Here we review three scientific challenges in addressing water-quality problems caused by such micropollutants. First, tools to assess the impact of these pollutants on aquatic life and human health must be further developed and refined. Second, cost-effective and appropriate remediation and water-treatment technologies must be explored and implemented. Third, usage and disposal strategies, coupled with the search for environmentally more benign products and processes, should aim to minimize introduction of critical pollutants into the aquatic environment.

2,951 citations

Journal ArticleDOI
TL;DR: In this paper, the main anthropogenic sources of polycyclic aromatic hydrocarbons (PAHs) and their effect on the concentrations of these compounds in air are discussed.

2,217 citations


Cites background from "Environmental organic chemistry"

  • ...The octanol–water partitioning coefficient (Kow) is related to the solubility of an organic compound in water [28]....

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  • ...Figure 5 Relationship between vapor pressure and molecular weight for typical PAHs [28]....

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  • ...Consequently, such unstable structural arrangement allows several physical and chemical processes to act on the compound [28]....

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Journal ArticleDOI
TL;DR: Understudied areas of emerging contaminant (EC) research in wastewaters and the environment are identified, and direction for future monitoring is recommended, and the fate and impact of ECs in all exposed environmental compartments are studied.

1,939 citations


Cites background from "Environmental organic chemistry"

  • ...established between the biomass or sediment and the aqueous medium for a specific EC, the net exchange between the two phases (and removal from the aqueous phase) will be zero (Schwarzenbach et al., 2003)....

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  • ...For example, if equilibrium is established between the biomass or sediment and the aqueous medium for a specific EC, the net exchange between the two phases (and removal from the aqueous phase) will be zero (Schwarzenbach et al., 2003)....

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Journal ArticleDOI
TL;DR: Field adsorption experiments using PP virgin pellets demonstrated significant and steady increase in PCBs and DDE concentrations throughout the six-day experiment, indicating that the source of PCBs, DDE, and nonylphenols is ambient seawater and that adsor adaptation to pellet surfaces is the mechanism of enrichment.
Abstract: Plastic resin pellets (small granules 0.1−0.5 centimeters in diameter) are widely distributed in the ocean all over the world. They are an industrial raw material for the plastic industry and are unintentionally released to the environment both during manufacturing and transport. They are sometimes ingested by seabirds and other marine organisms, and their adverse effects on organisms are a concern. In the present study, PCBs, DDE, and nonylphenols (NP) were detected in polypropylene (PP) resin pellets collected from four Japanese coasts. Concentrations of PCBs (4−117 ng/g), DDE (0.16−3.1 ng/g), and NP (0.13−16 μg/g) varied among the sampling sites. These concentrations were comparable to those for suspended particles and bottom sediments collected from the same area as the pellets. Field adsorption experiments using PP virgin pellets demonstrated significant and steady increase in PCBs and DDE concentrations throughout the six-day experiment, indicating that the source of PCBs and DDE is ambient seawater...

1,481 citations