A solid phase extraction procedure for simultaneous separation and preconcentration of traceamounts of Cu+2 ion from various real samples prior to its determination by flame atomicabsorption spectrometry has been developed. The proposed method is based on the utilization ofmultiwalled carbon nanotube in combination with Cupferron ligand as a solid phaseextractant. The influences of the analytic...

Nitrosophenylhydroxylamine-ammonium (cupferron), potassium cyanide, sodium azide, ethylenediaminetetraacetate (EDTA), alpha,alpha'-dipyridyl, and o-phenanthroline were tested (1) for their ability to enhance the frequencies of chromosomal aberrations produced by x-rays in the root tip cells of the broad bean, Vicia faba, and (2) for their ability to inhibit oxygen consumption of excised roots o...

Cupferron, the ammonium salt of N-nitro-sophenylhydroxylamine, enhances the frequencies of structural chromosome changes produced by x-rays in the root tips of the broad bean, Vicia faba (7, 4-6). The enhancement produced at low oxygen pressures (0.3 to 5 per cent 02 in the gas phase) is particularly striking and appears to be a result of the inhibitory action of cupferron on oxygen consumption...

Trace amounts of bismuth(III) and uranium(VI) can be simultaneously determined in a single scan by adsorptive cathodic stripping voltammetry in the presence of cupferron as a complexing agent. Optimal conditions were found to be: 0.1 mol L(-1) acetate buffer (pH 5.3), 5 × 10(-5) mol L(-1) cupferron, accumulation potential of -0.25 V, and accumulation time of 30 s. The linear range of Bi(III) an...

Activated on the surface of nanometre-sized TiO2, NO gas can easily react with aliphatic cyclic amines and aryl free radicals at RT under atmospheric pressure to offer NONOates and cupferron sodiums, respectively.

A novel, simple method has been developed for the preconcentration of Cu(II) based on the adsorption of its Schiff’s cupferron complex on a multi walled carbon nanotubes (MWCNTs) onto C18 cartridge .A new technique using a solid phase extraction (SPE) cartridge with modified Schiff’s Cupferron complex on a multi walled carbon nanotubes (MWCNTs) onto C18 cartridge as sorbent was developed for th...

Abstract The aim of this study was to develop an analytical method determine free concentrations Europium (Eu(III)) in natural waters. Europium(III) solution detected using cathodic stripping voltammetry after complexation with N -nitroso- -phenylhydroxylamine (cupferron). Optimization parameters allowed us detect nanomolar levels Eu(III) solution. Free measured the Donnan membrane technique wh...

In the structure of the title compound, C46H37N3O4S, the planes of the two isoindoline units make a dihedral angle of 77.86 (3)°. The dihedral angles between the benzyl plane and the isoindoline units are 79.56 (4) and 3.74 (9)°. The geometry at the S atom shows a short [1.7748 (17) Å] S-Cbenz-yl and a long [1.8820 (15) Å] S-Ctrit-yl bond and the C-S-C angle is 108.40 (7)°. N-C bond lengths aro...