title: Trace analysis by microwave excitation of sealed samples-III Determination of 0.005-25 ng of Te and 0.25-25 ng of Se in 0.5 ml of aqueous solution.
abstract: Traces of tellurium and selenium can be determined by optical emission spectrometry using microwave exitation in electrodeless discharge lamps. In 0.5 ml aqueous solution samples, freeze-dried in electrodeless discharge lamps, 10(-5) ppm Te and 5 x 10(-4) ppm Se can be determined with a relative deviation of about 20%.
authors.affiliation: Analytisch Chemisch Laboratorium der Rijksuniversiteit Utrecht Croesestraat 77A Utrecht, Netherlands.
authors.forename: P F
authors.initials: PF
authors.lastname: van Montfort
authors.forename: J
authors.initials: J
authors.lastname: Agterdenbos