Argentometric Titration Apparatus with a Light Emitting Diode‐based Nephelometric Detection System

Abstract

A newly revised apparatus for argentometric precipitate titrations was fabricated and evaluated. A light emitting diode was adapted as a solid-state light source and a syringe pump was used for manipulating titrant both in stopped flow mode and continuous mode. The performance of the two modes was compared in terms of accuracy and precision. The continuous flow mode is much faster and shows generally higher accuracy under given experimental conditions. The patterns of precipitate titration curves were changed with different coagulant concentrations and addition flow rates of titrant. However, end point volumes were not affected by these experimental factors tested here.

Spectral Responses of Light‐Emitting Diodes as a Photodiode and Their Applications in Optical Measurements

“…Light‐emitting diodes (LEDs) have been widely used as a light source by replacing conventional light sources and/or a monochromator in many optical measurements because of their wide range of emission wavelength covering from the infrared (IR) to ultraviolet (UV), good stability in light intensity ( i . e ., lower fluctuation in intensity), and narrow emission bands …”

Solvent Extraction of Didymium by TBP, Aliquat 336 and HDEHP in The Presence of Ca(NO3)2

“…For this, 0.5 mol•L −1 solution of Aliquat 336 was contacted with a solution of 1 mol•L −1 of calcium nitrate twice. According to argentometry [35], the degree of conversion was 99.7% after two contacts.…”