Screening alternative degreasing solvents using multivariate analysis

Article Abstract:

Researchers from the New Mexico State University analyzed 30 organic chemicals for its physicochemical properties and discovered that aqueous solubility, Henry's law constant, and surface tension are the most relevant factors best suited to effectively screen degreasing solvents from among the chemicals.

United States, Basic Chemical Manufacturing, Organic Chemicals, Organic compounds, New Mexico State University

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The influence of meteorology and air masses on daily atmospheric PCB and PAH concentrations at a UK location

Article Abstract:

The current method for gathering air-born PCBs and PAHs is called into question here. Gathering data over a two week period is argued to produce data that is statistically inconclusive. Instead, the authors argue for a shorter 24 hour period of gathering test data. This shorter method allows for a more precise understanding of the interaction of meteorologic actions and air-born PCBs and PAHs. Researchers sampled air at a location in Lancaster, a semirural area in England near the Irish Sea. Evidence presented suggests that PCBs are becoming well mixed in the earth's atmosphere, while PAH concentrations are influenced by ongoing primary sources.

United Kingdom, Product standards, safety, & recalls, Research and Development in the Physical, Engineering, and Life Sciences, Polychlorinated Biphenyls, Cyclic Crude and Intermediate Manufacturing, Services, not elsewhere classified, Meteorology, Pollution, Air pollution, Polycyclic aromatic hydrocarbons

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