Current Analytical Chemistry - Volume 12, Issue 4, 2016

This paper describes the possible implementation of the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) as green analytical chemistry metrics tools. TOPSIS is one of the multi-criteria decision analysis (MCDA) tools that is applied in the selection of the best alternative from many possible. In this case we have applied it to assess the nineteen analytical procedures for ibuprofen determination in wastewater sa Read More

Sample preparation is a crucial step in the analytical process. The solid phase absorbents attracted more interest in research on the preparation of samples, because they have a crucial role in achieving a high effectiveness of the purification and enrichment in the analysis of trace compounds present in complex matrices. Carbon nanotubes (CNTs) exhibit unique properties for a variety of processes and applications. The combin Read More

Pharmaceutical residues in the environment is a field of special interest due to the adverse effects to either human health or aquatic and soil environment. Pharmaceuticals have been already detected in underground, surface and wastewaters, soils, manure and sediments. The growing awareness of environmental pollution arising from human activity forces the need for their comprehensive determination. Environment Read More

The issue of drug chirality is attracting increasing attention among the scientific community. The phenomenon of chirality has been overlooked in environmental research (environmental occurrence, fate and toxicity) despite the great impact that chiral pharmacologically active compounds (cPACs) can provoke on ecosystems. The aim of this paper is to introduce the topic of chirality and its implications in environmental cont Read More

Environmental pollutants that disrupt endocrine functions, such as natural and synthetic estrogens, can significantly compromise the ecological and biological balance of ecosystems, in particular aqueous habitats. Long-term exposure to endocrine disruptors has adverse effects on water organisms and, consequently, humans. In nature, estrogens occur at very low concentrations, and their presence in environmental sam Read More

Hydrolysis is one of the most important abiotic processes leading to the degradation of organic compounds in aqueous media. Although there have been many reports concerning the biodegradability or photostability of the investigated compounds, much less information is available on their hydrolytic stability. Moreover, hydrolysis rates have been established using procedures other than the recommended standardized OECD Read More

A simple, precise and rapid conductometric titration method for determination of phenylephrine-HCl in pharmaceutical formulations by using, bismuth (III) tetraiodide as precipitating agent has been described. The proposed method was based on the formation of ion-pair associate between PHE and the inorganic complex, bismuth (III) tetraiodide to form an orange- red precipitate with PHE and the conductance of t Read More

Separation of five β-blocker 1-fluoro-2,4-dinitrophenyl-5-L-valine amide (FVDA) derivatives i.e. acebutolol, atenolol, metoprolol, oxprenolol and pindolol by means of high-performance thin layer chromatography (HPTLC) as well as pressurized planar electrochromatography (PPEC) techniques and with the use of HPTLC RP-18W plates as well as the acetonitrile - buffer mobile phase is presented. The influence of concentration o Read More

Background: Tissue amino acids are important markers to characterize (patho)physiology. As neurotransmitters or their precursors, they have special significance in brain. However, mass spectrometry (MS)-based quantifications of brain amino acids are rare and inconsistent. Methods: To reveal efficient procedures optimal for brain research purposes, free amino acids in the same extracts of rat cerebellum were quantifie Read More

Background: The corrosion of oil pipeline and equipment could lead to serious and technological problems. As the superior characteristics of inhibitor such as lower dosage and effective, corrosion inhibitor is widely applied to various fields. The aims of this paper are to mainly investigate the corrosion inhibition efficiency of β-cyclodextrin functionalized acrylamide copolymer (HCMPAM) on X70 steel in 0.5 M H2SO4 solution Read More

Background: Bee pollen, a type of floristic pollen collected by honeybees, is extracted at the hive entrance using a pollen trap, and had mixed with saliva and gland secretions. Considering its natural origin, pollen may be contaminated with pollutants due to hidden environmental factors and extensive application of pesticides. Because of their environmental persistence and prevalence in various environmental mediums, POP Read More

Introduction: More than 20 ppm of Zn2+ impurities in Ni electroplating baths causes Ni coating anticorrosive and decorative properties degradation. The 105 excess of Ni2+ concentration however interferes the Zn2+ impurities quantification allowing correcting the Ni bath concentrations. Objectives: The objective of this work is the development, characterization and testing with real samples of a rapid and Read More