Title: Determination of DO in Water by IO_3~--I~-—Crystal Violet-Polyvinyl Alcohol Spectrophotometry
Abstract:The method was established for determining dissolved oxygen in water by IO-3-I——crystal violet-PVA spectrophotometry.A ion-association complex(maximum absorbance at 550 nm) was formed after the reacti...The method was established for determining dissolved oxygen in water by IO-3-I——crystal violet-PVA spectrophotometry.A ion-association complex(maximum absorbance at 550 nm) was formed after the reaction of I-3 and crystal violet to determine DO in water.Test conditions were optimized and interfere of co-existence ions were observed to produce following results: Beer's law was obeyed at the DO concentration from 0.002 7 mg/L to 0.55 mg/L;the detective limits 0.001 1 mg/L;RSD of distilled water parallel samples ≤0.2%;the recoveries of spiked samples from 100% to 101%;water samples detective results in agreement with those results of Winkler method and dissolved oxygen meter method.Read More
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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