Alkalimetric determination of mercury by use of its reaction with 1-mercaptopropan-2,3-diol.

作者: Krishna K Verma , Pramila Tyagi , Sunil K Sanghi

DOI: 10.1016/0039-9140(88)80170-X

关键词: Mercury (element)Nitric acidIodideThioureaOrganomercury CompoundsThiocyanateInorganic chemistryTitrationOxalateChemistry

摘要: The reaction of mercury(II) with 1-mercaptopropan-2,3-diol to form its mercaptide and protons, alkalimetric titration the acid produced is proposed as a simple rapid method for determination mercury. Any already present first neutralized Phenol Red indicator after complexation iodide avoid precipitation mercuric oxide. Mercury metal, insoluble salts in both oxidation states, complexes organomercury compounds have been determined digestion nitric persulphate produce mercury(II). interference copper(II) avoided by reduction solvent extraction 2-benzoxazolethiol. unaffected presence large amounts halides, oxalate, tartrate, citrate, fluoride, EDTA, thiocyanate thiourea, which all interefere severely titrations.

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