Combination of Catalytic Spectrophotometry and StandardAddition Method for Determination of Trace Mercury(II) in Waste Water

This study conducts systematic research into various interference factors and corresponding methods of elimination in the catalytic spectrophotometry for the determination of trace mercury(II). The study aims at a new method for the determination of trace mercury (II) in waste water with multiple ingredients. The wide linear detection ranges from 3.0×10^－3 to 8.0×10^－2 μg/mL. The recovery is 97.79%~102.78% and the relative standard deviation is 0.116%. The determination result obtained is the same with that of absorption spectrometry.