Showing papers by "University of Science and Technology Beijing published in 1985"
TL;DR: In this article, the sensitivity of determining As by ET-AAS is increased about 50% using Ni salt as a matrix modifier, which can be applied to pollution control and river sediment samples with satisfactory results.
Abstract: Since the charring temperature of As in environmental samples can be raised to 1320/sup 0/C with Pt, the sensitivity of determining As by ET-AAS is increased about 50% using Ni salt as a matrix modifier. The interference of most foreign ions is avoided, but PO/sub 4//sup =/ and SO/sub 4//sup =/ cause a depression and F/sup -/ and SiO/sup 3//sup =/ produce an enhancement of the As absorption. The method has been applied to pollution control and river sediment samples with satisfactory results. 16 references, 2 figures, 2 tables.
7 citations