A new Al(III) selective membrane based on 5-bromo(salicylidene-2-amino thiophenol) as a neutral carrier in a poly(vinyl chloride) (PVC) matrix is coated on platinum wire to determine trace amounts of Al(III) ion in various samples. The sensor exhibits a good response for Al(III) ion over a wide concentration range of 5.20 × 10-7 to 1.00 × 10-2 M  with Nernstian slope of 19...

a simple analytical system suitable for nephelometric measurements is introduced in this article. the electronic and optical components are simplified so that the apparatus is easily assembled from materials that are generally available. this instrument is designed for the efficient measurement of anions, and microgram quantities of ions may be determined by a convenient method of titration. us...

A magnetic nano-composite based on modified styren-maleic anhydride copolymer and Fe3O4 nano-particles was introduced as a new sorbent for solid-phase extraction and preconcentration of trace levels of silver ion from aqueous solutions. The size and morphology of the nano-sorbent were characterized via X-ray diffraction analysis, scanning electron microscopy and Fourier transform infrared spect...

INTRODUCTION Mobile-phase ion chromatography (MPIC) is a technique that combines ion-pair chromatography with suppressed conductivity detection. Ion-pair chromatography is commonly used in combination with UV detection, in which case it is referred to as reversedphase ion-pair chromatography (RPIPC). MPIC has the advantage of using conductivity detection, which serves as a universal detection m...

a new al(iii) selective membrane based on 5-bromo(salicylidene-2-amino thiophenol) as a neutral carrier in a poly(vinyl chloride) (pvc) matrix is coated on platinum wire to determine trace amounts of al(iii) ion in various samples. the sensor exhibits a good response for al(iii) ion over a wide concentration range of 5.20 × 10-7 to 1.00 × 10-2 m  with nernstian slope of 19.64 ± 0.15 mv decade-1...

Time of flight mass spectrometry with multi-ion coincidence detection has been used to investigate ionic photofragmentation of formic acid following O 1s excitation and ionization. Multi-ion coincidence spectra (PEPICO and PEPIPICO), branching ratios (BR) and partial ion yields (PIY) are reported. The multi-ion coincidence detection is used to identify the dissociation channels following O 1s e...

a rapid isocratic method of high performance liquid chromatography system (hplc) with a glassy carbon working electrode of electrochemical detector is set up for quantitative detection of  trace amount of nitrite ion (no2¯) in aqueous protein containing cell lysate, cell media, plasma, serum, urine and other body fluids. the solid extraction  reversed phase cartridges (sep-pak) are used for dep...