title: [Determination of impurities in osmium powder by ICP-AES using matrix separation].
abstract: An inductively coupled plasma-atomic emission spectrometry method has been developed for the determination of impurities in osmium powder. The sample was dissolved in nitric acid at 150-200 degrees C. Osmium was oxided and its oxide vapour was absorbed by NaOH. The residual solution was then analyzed by ICP-AES. The determination limit of the method is 0.005-0.134 microg x mL(-1). The recovery range of the method is 91%-112%. The precision of the method is less than 3%. This method can be used to determine 18 elements simultaneously. It is simple, rapid and precise.
authors.affiliation: Guangdong Import and Export Commodity Inspection Bureau, 510623 Guangzhou.
authors.forename: B
authors.initials: B
authors.lastname: He
authors.forename: T
authors.initials: T
authors.lastname: Peng
authors.forename: Z
authors.initials: Z
authors.lastname: Zhong