Spectrophotometric determination of arsenic in environmental and biological samples

Spectrophotometric Determination of Arsenic in Environmental and Biological Samples 6.1 Introduction 6.2 Analytical Chemistry 6.3 Apparatus 6.4 Reagents and Solutions

Determination of arsenic concentration and physiochemical characteristics of water samples from Babagorgor fountain

Since Babagorgorfountain in the Ghorveh city of Kurdistan province is located in the arsenic belt of Iran, to raise awareness about the quality of drinking water from this fountain the concentration of arsenic and other heavy metals as well as other physicochemical parameters were investigated to protect the public health. In this study, water samples were collected from Babagorgorfountain. Ars...

Adaptive neuro-fuzzy inference system (ANFIS) applied for spectrophotometric determination of fluoxetine and sertraline in pharmaceutical formulations and biological fluid

The UV-spectrophotometric method of analysis was proposed for simultaneous determination of fluoxetine (FLX) and sertraline (SRT). Considering the strong spectral overlap between UV-Vis spectra of these compounds, a previous separation should be carried out in order to determine them by conventional spectrophotometric techniques. Here, full-spectrum multivariate calibrations adaptive neuro-fuzz...

A simple spectrophotometric method for the determination of arsenic in industrial and environmental samples using vanillin-2- amino nicotinic acid (VANA)

Vanillin-2amino nicotinic acid (VANA) has been proposed as new analytical reagent for the direct non-extractive spectrophotometric determination of Arsenic. The reagent reacts with arsenic in acidic medium (pH 5.0, Sodium acetateacetic acid buffer) to form light greenish yellow colored 1:1 (M:L). The colour reactions are instaneous and the maximum absorbance was obtained at 350 nm and remains c...

Spectrophotometric Determination of Mefenamic Acid in Biological Samples Using Magnetic Iron Oxide Nanoparticles as a Sorbent for Solid Phase Extraction

This work investigates the potential of magnetic Fe3O4 nanoparticles as an adsorbent for separation and preconcentration of trace amounts of mefenamic acid in aquatic and biological samples, prior to spectrophotometric determination. The magnetic iron oxide nanoparticles (MIONs) were synthesized by mixing of ferrous and ferric chlorides. The possible parameters affecting the enrichment were opt...