A rapid, simple and sensitive magnetic solid phase extraction (MSPE) method was developed for the pre-concentration and determination of copper and cadmium ions. In this study, modified Fe3O4@Ag nanoparticles were synthesized and then ligand 2-isonicotinoyl hydrazine carbodithiolate (ITHCDT) was bonded to silver due to the formation of covalent bond of S-Ag. In this method, copper and cadmium i...

Liposomes have been employed as carriers for antineoplastic drugs to improve delivery. We describe an HPLC-UV method for determining cisplatin levels in liposomal and biological samples, which represents an attractive alternative to the widely used flame atomic absorption spectroscopy. Liposomal cisplatin was extracted from liposomes, plasma and tissue samples by using acetonitrile and separate...

A solid phase extraction (SPE) procedure was presented for the preconcentration of copper, nickel and cobalt using multiwalled carbon nanotubes (MWCNTs) modified by methyl-(2-pyridyl) ketone oxime (MPKO, as a new complexing agent) as a solid sorbent prior to their determination by flame atomic absorption spectroscopy (FAAS). Some analytical parameters including pH, sample volume, concentration ...

This research focuses on understanding biosorption process and developing a cost effective technology for treatement of heavy metals-contaminated domastic water. A new biosorbent has been prepared by crushing of neem leaves. The experiments were designed according to Taguchi’s (L16) orthogonal array to optimize experimental runs. In order to assess the biosorption behavior of neem leaves satisf...

This study is focused on the evaluation of zinc oxide properties and behavior at commercially available cosmetic ingredients by in vitro methods of dermal absorption of zinc oxide and its subsequent chemical determinations. Two methods for determination of ZnO were used and the results were compared. The spectrophotometric method (SPM) was selected for its sensitivity and atomic absorption spec...

Tri-methyl-indium (TMI) is used as an indium transport molecule to introduce indium atoms to reactive hot gas flows/combustion environments for spectroscopic diagnostics. A seeding system was constructed to allow the addition of an inert TMI laden carrier gas into an air/fuel mixture burning consequently on a burner. The amount of the seeded TMI in the carrier gas can be readily varied by contr...

A new method for preparing 1,5-diphenylselenocarbazone (selenazone) nanoparticles and their complexes with Pb2+, Cd2+, Co2+, Ni2+ has been performed using hot methanol solvent. The ligand its were characterized FT-IR, UV-Vis, 1H-NMR, 13C-NMR, X-ray powder diffraction (XRD), EI-mass spectrometry, scanning electron microscopy (SEM), HG flame-atomic absorption spectrophotometer, thermal analysis (...

Recently there have been several advances in instrumental methods for the flame emission analysis of electrolytecations of clinical significance. Greater precision and increased ease of operation are among today’s clinical requirements. This study compares a new automated flame photometer, “Klina Flame” (Beckman Instruments) with a “Techtron-AA5” atomic absorption emission unit (Varian Instrume...