1967•Journal of AOAC INTERNATIONALRequires access

Determination of Molybdenum in Fertilizers by Atomic Absorption Spectrophotometry

William L Hoover, Sonja C Dtjren

Abstract

Abstract A procedure for determining low levels of molybdenum in fertilizers by atomic absorption is proposed. With potassium thiocyanate as complexing agent, molybdenum is extracted in an isoamyl alcohol fraction to separate the fraction containing molybdenum from the water-soluble fraction containing materials that would interfere in the atomic absorption procedure. However, the procedure cannot be used with samples that have high concentrations of iron. Tests on the recovery of molybdenum in four fertilizers indicate that the procedure is reliable to levels as low as 2.5 ppm of molybdenum

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Key concepts: Molybdenum, Atomic absorption spectroscopy, Isoamyl alcohol, Chemistry, Thiocyanate, Potassium thiocyanate, Inorganic chemistry, Vanadium