A new potassium electrode, made from valinomycin, which uses commercially available electrode configurations, responds to potassium ion concentrations from 1 mole per liter to below 10(-6) mole per liter. It is highly selective for potassium ion over sodium ion and divalent ions and can be used for the direct determination of potassium ion in human serumn. No significant complexing of potassiiu...

interaction of pb(ii) ion with modified banana shell (mbs) and banana shell (bs) during adsorption fromaqueous solution were investigated. batch experiments were carried out to investigate the effect of contact time,ph, and idmid ion concentration on adsorption efficiency. the favorable pll for maxim= pb(ii) adsorptionwas at 5.0. for the investigated imoi) concentrations (10-80 mph), maximum ad...

it has been recently shown that manufacturing p-n-junctions, field-effect and bipolar transistors, thyristors in a multilayer structure by diffusion or ion implantation with the optimization of dopant and/or radiation defects leads to increase the sharpness of p-n-junctions (both single p-n-junctions and p-n-junctions framework their system). due to the optimization, one can also obtain increas...

this study investigated biodegradation of dibenzothiophene (dbt) in marsh soil spiked bywhite-rot fungus phanerochaete chrysosporium. soil samples were spiked with 100 ppm dbtand incubated at 30°c in a dark chamber for 30 days. samples were evaluated for ph, mnperoxidaseactivity, sulfate ion concentration and growth during the tests. results showedmaximum levels of ph, mn-peroxidase and sulfate...

in recent years, ionic liquids have been used in pharmaceutical processes. therefore, having a deep insight into the ion association behavior of ionic liquids in the presence of a drug is of particular importance. so, in this work, the molar conductivities of the ionic liquids, 1-alkyl-3-methylimidazolium bromide, [cnmim]br (n = 4, 6 and 8) in various concentrations of aspirin (asa) in acetonit...

Abstract. The concentration of atmospheric ions affects the total aerosol particle number concentrations in atmosphere as well new formation via ion-induced nucleation, ion–ion recombination, and effects on condensational growth. In this study, we investigate long-term trends a boreal forest environment using 16 years cluster ion (0.8–2 nm) intermediate (2–7 measurements characterize most impor...

Bioelectrochemical systems provide a promising tool for the copper recovery from heap leaching solutions which usually contain low and high iron concentrations. In this study, role of ferrous ion concentrations, external resistance in removal synthetic sulfuric acid by lab-scale Microbial Fuel Cell (MFC) was investigated good results were obtained copper.

Polymer membranes used in separation applications exhibit a tradeoff between permeability and selectivity. That is, that are highly permeable tend to have low selectivity vice versa. For ion-exchange such as electrodialysis reverse electrodialysis, this is expressed terms of membrane permselectivity (i.e., ability selectively permeate counter-ions over co-ions) ionic conductivity transport ions...

This study investigated biodegradation of dibenzothiophene (DBT) in marsh soil spiked bywhite-rot fungus Phanerochaete chrysosporium. Soil samples were spiked with 100 ppm DBTand incubated at 30°C in a dark chamber for 30 days. Samples were evaluated for pH, Mnperoxidaseactivity, sulfate ion concentration and growth during the tests. Results showedmaximum levels of pH, Mn-peroxidase and sulfate...