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The presented results include decade of monitoring of the Vistula Lagoon waters and have been supplemented by the determination of chlorinated compounds, as well as on concentrations of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in the sedimentation zone. Monitoring of river waters entering the Polish part of the lagoon and the lagoon waters confirmed the presence of plant protection chemical; the largest contributors has lindane (34%) and DDT (21%); the same as for sediments were dominate lindane (19%) and DDT (14%) within pp-DDT isomer dominate (13%). In the lagoon water, PCDD/Fs were determined within a range of 1.5-5.6 ng dm, leading to average toxicity of 0.18 ± 0.13 ng TEQ·dm. In sediments, their concentrations fell within a range of 22.7-405.7 ng kg dw and the average toxicity of the lagoon sediments was set at 5.00 ± 1.98 ng TEQ·kg dw. Both in water and sediments, the greatest share among PCDD/Fs has octa-chlorodibenzodioxin. Due to the hydromorphological conditions of the lagoon, the waters are mixed to the bottom causing the surface layer of sediment to become remobilized-this is suggested as the key factor when it comes to water recontamination and increased access of POPs to marine organisms.
This article was published in the following journal.
Name: Environmental monitoring and assessment
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The wide middle zone of the adrenal cortex. This zone produces a series of enzymes that convert PREGNENOLONE to cortisol (HYDROCORTISONE) via 17-ALPHA-HYDROXYPROGESTERONE.
The inner zone of the adrenal cortex. This zone produces the enzymes that convert PREGNENOLONE, a 21-carbon steroid, to 19-carbon steroids (DEHYDROEPIANDROSTERONE; and ANDROSTENEDIONE) via 17-ALPHA-HYDROXYPREGNENOLONE.
The narrow subcapsular outer zone of the adrenal cortex. This zone produces a series of enzymes that convert PREGNENOLONE to ALDOSTERONE. The final steps involve three successive oxidations by ALDOSTERONE SYNTHASE.
The carbohydrate-rich zone on the cell surface. This zone can be visualized by a variety of stains as well as by its affinity for lectins. Although most of the carbohydrate is attached to intrinsic plasma membrane molecules, the glycocalyx usually also contains both glycoproteins and proteoglycans that have been secreted into the extracellular space and then adsorbed onto the cell surface. (Alberts et al., Molecular Biology of the Cell, 3d ed, p502)
ANTHRAX outbreak that occurred in 1979 and was associated with a research facility in Sverdlovsk, in the Ural mountain region of central RUSSIA. Most victims worked or lived in a narrow zone extending from the facility. The zone of anthrax-caused livestock mortality paralleled the northerly wind that prevailed shortly before the outbreak. It was concluded that an escape of ANTHRAX caused outbreak.