Small (Weinheim an der Bergstrasse, Germany), 12(43), 5920-5926 (2016-09-07)
A novel 3D cobalt sulfide (CoS) nanoparticle-decorated nitrogen and sulfur co-doped reduced graphene oxide aerogel (NSGA), referred to as CoS/NSGA, is prepared via three sequential processes, i.e., freeze-drying, annealing, and sulfidization. The obtained CoS/NSGA exhibits excellent electrocatalytic performance in the
A rapid and simple colorimetric method is presented for the estimation of organic bases in pharmaceutical preparations. Solid cobalt thiocyanate reagent is used. Many bases form blue coloured ion pairs soluble in dichloromethane.
Journal of AOAC International, 85(1), 173-181 (2002-03-07)
The mixed aggregate (MA) method was evaluated for the routine determination of total ethoxylated nonionic surfactants in municipal raw and treated sewage. Nonionics in wastewater samples were enriched with a C8 solid-phase extraction cartridge, eluted with ethyl acetate-methanol, and separated
Journal of pharmaceutical and biomedical analysis, 20(4), 671-679 (2000-03-07)
Atomic absorption spectrometry (AAS) and colourimetric methods have been developed for the determination of pizotifen (I), ketotifen (II) and loratadine (III). The first method depends on the reaction of the three drugs (I); (II) and (III) with cobalt thiocyanate reagent
Quantifying cocaine in apprehended samples is important to the Brazilian Federal Police because the concentration can indicate the origin of the drug and consequently the traffic route. In addition to the other risks of using this drug is the variability
Plasmonic nanoparticles have unique optical properties that can be tailored to suit a variety of applications in the biotechnology1–8 and electronics9–16 industries.
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