Microdetermination of iron in water by ion-exchanger colorimetry with ferrozine.
The use of ion-exchanger colorimetry for determination of microamounts of iron in water with 3-(2-pyridyl)-5,6-bis(4-phenylsulphonic acid)-1,2,4-triazine disodium salt as colour reagent is described. The advantages are the high sensitivity, ease of operation, good reproducibility, and simplicity of apparatus. Also, because of concentration by the ion-exchanger resin the detection limit of the method may be as low as the mug ml level.
Shi-Yu
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L
Department of Chemistry, Beijing University, Beijing, China.
Wei-Ping
G
G