Polychlorinated dibenzo-p-dioxin and dibenzofuran concentration profiles in sediment and fish tissue of the Willamette basin, Oregon

Article Abstract:

Polychlorinated dibenzo-p-dioxin and dibenzofuran profiles in the Willamette basin have been found to have a distinct homolog profile in all collection sites regardless of location. Analysis of homolog's principal components shows a gradient showing the dominance of highly chlorinated congeners in sites near human and industrial activity. The homolog profile was consistent regardless of total concentration, presence of point sources, location, land use and subbasin size.

Research and Development in the Physical, Engineering, and Life Sciences, Water Pollution Control R&D, Testing, Pollution, Oregon, Dibenzofurans, Water quality, Water pollution research, Watersheds

---

Magnetic, chemical, and microscopical characterization of urban soiling on historical monuments

Article Abstract:

The deposition of magnetic airborne particles at historical monuments in UK was analyzed by magnetic measurements of bulk samples, scanning electron microscopy and energy dispersive spectroscopy. Analysis of samples from the sulfated patinas of British limestone monuments indicated the presence of high levels of ferrimagnetic grains. The particulates are composed of Fe3O4 crystals with minor traces of hematite, quartz and feldspar.

Analysis, Monuments, Pollutants, Air pollution

---

Similar abstracts:

• Abstracts: Aircraft measurements of the concentration and flux of agrochemicals. Evidence for the heterogeneous formation of nitrous acid from peroxynitric acid in environmental chambers
• Abstracts: The role of knowledge and information in innovation: the case of genetic engineering. Assessing innovativeness through organizational adaptability: a contingency approach
• Abstracts: MicroRNAs and their regulatory roles in plants. Mechanism of leaf-shape determination
• Abstracts: Effect of particle concentration and fixation on radiocesium sorption. Amine-algae interactions: cation exchange and possible hydrogen bonding
• Abstracts: Predicting epilimnetic phosphorus concentrations using an improved diatom-based transfer function and its application to lake eutrophication management

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.