PMID: 18962443Apr 1, 1979

Use of complexing ligands in the determination of antimony and tin by atomic-absorption spectrometry

Talanta
C G Nyagah, S O Wandiga

Abstract

The atomic-absorption spectrophotometric determination of antimony is best achieved in the presence of either an ammonium fluoride, hydrochloric acid, nitric acid mixture, or one of the following complexing agents: tartaric acid, citric acid, oxalic acid, 2-mercaptopropanoic acid. The interference of the 29 metals tested is least in the ammonium fluoride-hydrochloric acid-nitric acid mixture and is similar in tartaric acid, citric acid and 2-mercaptopropanoic acid media. However, the interference is pronounced in oxalic acid. Tin can be determined if any of the complexing agents or 6M hydrochloric acid is present.

Related Concepts

Antimony
Hydrochloric Acid
Ligands
Metals
Spectrophotometry, Atomic Absorption
Tin
Ammonium fluoride
Citric Acid
Nitric Acid
Oxalic Acid

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