We modeled dissolved phytochelatin concentrations by studying its exudation from phytoplankton and its removal from seawater. Exudation rates were obtained from experiments in which a marine diatom, Thalassiosira pseudonana, was grown in Cd-containing medium. Dissolved phytochelatin in the culture medium was measured as a function of time, and a first-order model was fit to the data to derive e...

Particulate Matter (PM) is a general term to classify air pollutants consisting of airborne particles. The particles vary in composition and size, the sizes range from 2.5 µm (PM2.5) 10 (PM10). Anthropogenic activity (e.g., industrial processes or fuel/waste combustion) stands as main emission source PM. Due fact that indoor PM penetrates outside air, Heating, Ventilation, Air-Conditioning (HVA...

the most important environmental pollutant in steel industry is air pollution due to the process of its products. optimise sitting for this industry, in a great extend will prevent pollutants and emissions. khorasan steel company is located near some populous villages and three rivers. it is necessary to perform an investigation for providing abatement and control of air pollution, in time of p...

The downward flux of sinking particles is a prominent Hg removal and redistribution process in the ocean; however, it not well-constrained. Using data from three U.S. GEOTRACES cruises including Pacific, Atlantic, Arctic Oceans, we examined mercury partitioning coefficient, K d , water column. suggest that varies widely over ocean basins. We also investigated effect particle concentration compo...

in order to ensure the safety of parenterals, international pharmacopoeias and national standards have set up stringent guidelines and standards. particulate con- tamination is a potential health risk caused by intravenous injection of particles large enough to potentially clog the small arteries. particles could be produced through manufacturing and packaging or even dispensing of the pharmace...