ALH SPIKE FORMATION IN A GRAPHITE ATOMIZER

被引：6

作者：

OHLSSON, KEA

CEDERGREN, A

FRECH, W

机构：

[1] Department of Analytical Chemistry, University of Umeå

来源：

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY | 1992年 / 47卷 / 14期

关键词：

D O I：

10.1016/0584-8547(92)80142-4

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Clear experimental evidence is given showing that AIH molecules are present during the spike-like Al atomic absorbance signals obtained when samples containing > 500 ng aluminium are slowly heated in a graphite atomizer. The molecules CN(g) or C2(g) were not observed, which does not. however. rule out the involvement of Al2C2(g) in the spike formation process. The AlH molecules are probably formed in the gas phase from aluminium and hydrogen. The partial pressure of the latter is estimated to be 200-600 Pa and seems to be constant during the Al spike.

引用

页码：1525 / 1533

页数：9

共 14 条

[1] INVESTIGATIONS OF REACTIONS INVOLVED IN FLAMELESS ATOMIC-ABSORPTION PROCEDURES .2. AN EXPERIMENTAL-STUDY OF ROLE OF HYDROGEN IN ELIMINATING INTERFERENCE FROM CHLORINE IN DETERMINATION OF LEAD IN STEEL [J].