Suppression of interference in the AAS determination of chromium by use of ammonium bifluoride.
Addition of 1% of ammonium bifluoride successfully suppresses interference by diverse ions in the atomic-absorption determination of chromium(VI). If the sample solutions also contain chromium(III) addition of 1% of ammonium bifluoride and 0.2% of sodium sulphate is recommended for the suppression.
Purushottam
A
A
Central Laboratories, Airborne Mineral Surveys and Exploration, Geological Survey of India, Faridabad, India.
Naidu
P P
PP
Lal
S S
SS