Automated continuous monitoring of inorganic and total mercury in wastewater and other waters by flow‐injection analysis and cold‐vapour atomic absorption spectrometry
Open Access
- 1 January 1988
- journal article
- research article
- Published by Wiley in Journal of Analytical Methods in Chemistry
- Vol. 10 (3) , 140-143
- https://doi.org/10.1155/s1463924688000264
Abstract
An automated continuous monitoring system for the determination of inorganic and total mercury by flow-injection analysis followed by cold-vapour atomic absorption spectrometry is described. The method uses a typical flow-injection manifold where digestion and reduction of the injected sample takes place. Mercury is removed by aeration from the flowing stream in a specially designed air-liquid separator and swept into a silica cell for absorption measurement at a wavelength of 253.7 nm. A calibration curve up to 10 µg Hg ml-1 using three different path length cells is obtained with a detection limit of 0.02 µg Hg ml-1. The sampling rate of an injection every 3 min produces 20 results per hour from a flowing stream.Keywords
Funding Information
- Associated Octel Company
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