Elimination of boron memory effect in inductively coupled plasma-mass spectrometry by ammonia gas injection into the spray chamber during analysis

被引：64

作者：

Al-Ammar, AS ^{[1
]}

Gupta, RK ^{[1
]}

Barnes, RM ^{[1
]}

机构：

[1] Univ Massachusetts, Dept Chem, Amherst, MA 01003 USA

来源：

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY | 2000年 / 55卷 / 06期

关键词：

memory effect elimination; washout time; inductively coupled plasma-mass spectrometry; boron determination;

D O I：

10.1016/S0584-8547(00)00197-X

中图分类号：

O433 [光谱学];

学科分类号：

0703 [化学]; 070302 [分析化学];

摘要：

Injection of 10-20 ml/min of ammonia gas into an inductively coupled plasma-mass spectrometry (ICP-MS) spray chamber during boron determination eliminates the memory effect of a 1 mu g/ml B solution within a 2-min washing time. Ammonia gas injection also reduces the boron blank by a factor of four and enhances the sensitivity by 33-90%. Boron detection limits are improved from 12 and 14 to 3 and 4 ng/ml, respectively, for mio ICP-MS instruments. Trace boron concentrations in certified reference materials agree well using ammonia gas injection. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：629 / 635

页数：7

共 6 条

[1]

Elimination of boron memory effect in inductively coupled plasma-mass spectrometry by addition of ammonia [J].