title: Application of matrix-modification in determination of thallium in waste water by graphite-furnace atomic-absorption spectrometry.
abstract: A method has been developed for the determination of thallium in waste water at the ng ml level by graphite-furnace atomic-absorption spectrometry. If microgram amounts of palladium or platinum are used as a matrix modifier, the ashing temperature for thallium can be raised to 1000 degrees , and the interference of halides and mineral acids is greatly reduced. The relative standard deviation found was 2% (9 replicate determinations) at the 8-ng ml thallium level, and the detection limit 1 ng ml .
authors.affiliation: Institute of Environmental Chemistry, Academia Sinica, P.O. Box 934, Beijing, People's Republic of China.
authors.forename: S
authors.initials: S
authors.lastname: Xiao-Quan
authors.forename: N
authors.initials: N
authors.lastname: Zhe-Ming
authors.forename: Z
authors.initials: Z
authors.lastname: Li