title: Rapid chelometric determination of lead in lubricating oils via mercaptoacetate extraction.
abstract: A rapid complexometric method for the estimation of lead in lubricating oil has been developed. The lead naphthenate present in the oil is extracted with a mixture of dilute thioglycollic acid and nitric acid. The aqueous extract containing lead mercaptoacetate is titrated with EDTA at pH 5 with Xylenol Orange as indicator. The lead content can be determined within 15-20 min.
authors.affiliation: Research & Control Laboratory, Durgapur Steel Plant, Durgapur-3, West Bengal, India.
authors.forename: S
authors.initials: S
authors.lastname: Banerjee
authors.forename: R K
authors.initials: RK
authors.lastname: Dutta