Titration of spoilt beer samples by flow-injection analysis

Titration of spoilt beer samples by flow-injection analysis

Automated titrations: the use of automated multiple flow injection analysis for the titration of discrete samples

Introduction In 1974 Fleet and Ho 1] successfully demonstrated an automated continuous flow titration system using a reagent gradient. This system had a throughput of only ten samples per hour, but it was significant since it demonstrated the principles for titration of discrete samples in continuously flowing streams. Nagy et al. [2,3 ]have also demonstrated a similar approach. In 1977, Ruzick...

Automatic simultaneous determination of copper and lead in biological samples by flow injection/stripping voltammetric analysis

An automatic-continuous method for the simultaneous determination of copper and lead based on flow injection analysis (FIA) and stripping voltammetry (SV) is proposed. The method affords the determination of the analytes at the ng/ml level (linear ranges 0.64 to 64.0 ng/ml and 2.1 to 62.2 ng/ml for copper and lead, respectively) with good precision (r.s.d. values smaller than 4%). The selectivi...

Determination of total carbon dioxide in beer and soft drinks by gas diffusion and flow injection analysis

A gas diffusion FIA method for determination of total CO(2) in beer and in soft drinks is described. The composition of the acceptor stream for diffused carbon dioxide is critical. Bromocresol purple has been selecled among a large number of tested pH indicators and if the detection is made at a wavelength of 430 nm, stable baseline conditions and positive deflections of the resulting FIA peaks...

Ultra-trace Determination of Palladium(II) by Spectrophotometric Flow Injection Analysis

Nowadays, palladium compounds due to their especial characteristics used in different industries, mainly in electrical power sources and chemical productions as a catalyst. Therefore, Pd concentration is increasing in our around that can be contaminant our environment due its toxic effects. In this work, a simple, selective and rapid flow injection method of analysis (FIA) has been developed fo...