steel slags are the by products of steel industries, which forms during reduction process of iron melting. the chemical composition of it changes depending to the melting procedure. its mineralogical composition also varies based on the cooling procedure. two different types of steel slag were used as absorbing bed for various concentrations of pb2+ ions in the form of lead chloride, and the co...

The asymmetric unit of the title complex, {(C(5)H(12)NO)[BiCl(4)]}(n), contains two bridging and two cis non-bridging chloride ligands coordinated to a central Bi(III) atom, and one 4-methyl-morpholin-4-ium cation. The Bi(III) atoms are linked by the bridging chloride ligands into linear chains parallel to the c axis. The chloride ions create a pseudo-octa-hedral geometry about each Bi(III) ato...

An improved microprocedure for the determination of tocopherol in blood serum is reported. Tocopherol is oxidized by ferric chloride and the pink complex of ferrous ions with 4,7-diphenyl10,10-phenanthroline (bathophenanthroline) is determined spectrophotometrically. The test is more sensitive than colorimetric methods using 2,2’,2” -tripyridine,2,2’-bipyridine (bipyridyl) or 2,4,6tripyridyl-s-...

1. The ionic basis of the depolarizing responses resulting from ionophoresis of noradrenaline onto the smooth muscle of mesenteric veins has been investigated using electrically short segments of vessel. 2. Isolated cut segments of vein were effectively isopotential as assessed by the voltage response to a step change in current. The mean input resistance and time constant of the smooth muscle ...

The effect of ionic activity on the quenching of the quinine dication fluorescence by chloride and bromide ions is examined in solutions of sufficiently low ionic strength to enable ionic activities to be taken into account by means of the Debye-Hückel equation. An equation for the dependence of the Stern-Volmer constant on the ionic strength is derived in a novel way and an iterative, linear l...

The inhibition of the type-3 copper enzyme tyrosinase by halide ions was studied by kinetic and paramagnetic (1)H NMR methods. All halides are inhibitors in the conversion of l-3,4-dihydroxyphenylalanine (l-DOPA) with apparent inhibition constants that follow the order I(-) < F(-) << Cl(-) < Br(-) at pH 6.80. The results show that the inhibition arises from the interaction of halide with both t...

Molecular dynamics simulations of hydrated chloride ions have been performed with a polarizable model for interface geometries of varying curvature, ranging from clusters to planar surfaces. The solvation depth profile of the chloride ion is found to depend dramatically on the curvature of the interface. This behavior is consistent with the structure-breaking character of the chloride ion, and ...

The macrocyclic ligands 3,8,12,17-tetramethyl-2,18,9,11-bipyridyl-1,4,7,10,13,16hexaazacyclooctadecanetetrahydro bromide has been synthesized and explored as suitable ionophores for chloride selective membrane sensors. It displays Nernstian behavior (59.2 mV decade-1) across the range of 4.1 × 10-8 to 1.0 × 10-2 M. The detection limit of the electrode is ~ 15 nM and the response time and life t...

In the performance of routine determinations of serum chloride by the automated method, which depends on halide displacement of mercury from the thiocyanate to allow formation of ferric thiocyanate complex, 4 cases of bromide poisoning were detected. Experimental evidence shows the halide substitution to be an equilibrium, with higher formation constants for the heavier halide ions. As a result...