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Spectrophotometric determination of traces of boron in high purity silicon
Abstract A reddish brown complex is formed between boron and curcumin in concentrated sulphuric acid and glacial acetic acid mixture (1:1). the coloured complex is highly selective and stable forExpand
Analysis of Major, Minor Constituents and Various Phases in Carbon Brush by Classical Gravimetry, Titremetry, and by Instrumental Method
A new precise chemical method has been developed for the compositional analysis of carbon brush. The major chemical constituents of carbon brush are carbon (C), copper (Cu), lead (Pb), and tin (Sn),Expand
Need of Alcohol Reference Materials and Reliable Measurement of Alcohol Content by Breath Alcohol Analyzer in India: An Overview
Breath alcohol analyser is used to detect alcohol content in end-expiratory breaths in order to enforce driving regulations under the influence of alcohol legislation. The accuracy and reliability ofExpand
Evaluation of purity with its uncertainty value in high purity lead stick by conventional and electro-gravimetric methods
Gravimetry is the most reliable technique in comparison to titremetry and instrumental method and the results of gravimetry are directly traceable to SI unit. Expand
Spectrophotometric Determination of Nitrogen Dioxide
Abstract A highly sensitive spectrophotometric method has been developed for the determination of nitrogen dioxide (nitrite as NOz −) by reacting manganese dioxide in 1:20 perchloric acid. An amountExpand