Differential-pulse polarographic determination of selenium species in contaminated waters |
| |
Authors: | GE Batley |
| |
Institution: | Analytical Chemistry Section, CSIRO Division of Energy Chemistry, Private Mail Bag 7, Sutherland, NSW 2232 Australia |
| |
Abstract: | Selenium(IV), in the concentration range 2–100 μg l?1 in contaminated waters, is determined by using the sensitive adsorption-controlled peak obtained by differential pulse polarography in dilute acid solution. Interfering heavy metals are removed on Chelex-100 resin. Selenium(VI) is not electroactive but can be determined after photolytic reduction in the absence of oxygen. Anion-exchange preconcentration is necessary if the total selenium is below the detection limit of 2 μg l?1. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|