Study of particle size infkuence on laser ablation inductively coupled plasma mass spectrometry using an in-line cascade impactor

被引：30
|
作者：
Liu, CY [1 ]
Mao, XL [1 ]
González, J [1 ]
Russo, RE [1 ]
机构：
[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
来源：
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 2005年 / 20卷 / 03期
关键词：
D O I：
10.1039/b414422h
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
An in-line cascade impactor was used as a low pass filter to study the effects of particles on inductively coupled plasma mass spectrometry (ICP-MS) performance. The temporal relative standard deviation (TRSD), which represents the short term internal precision during repetitive ablation, was improved from 20% to 4% by removing large particles ablated from brass alloys. External precision for spot to spot measurements on a bulk sample was improved to approximately 2%. The ablated aerosol chemistry was particle size dependent: smaller particles were zinc rich while larger particles were copper rich.
引用
收藏
页码：200 / 203
页数：4
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