A MODERATE-POWER NITROGEN MICROWAVE-INDUCED PLASMA AS AN ALTERNATIVE ION-SOURCE FOR MASS-SPECTROMETRY

被引：40

作者：

SHEN, WL ^{[1
]}

DAVIDSON, TM ^{[1
]}

CREED, JT ^{[1
]}

CARUSO, JA ^{[1
]}

机构：

[1] UNIV CINCINNATI,DEPT CHEM,CINCINNATI,OH 45221

来源：

APPLIED SPECTROSCOPY | 1990年 / 44卷 / 06期

关键词：

D O I：

10.1366/0003702904086623

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The moderate-power nitrogen plasma is evaluated as an alternative ion source for plasma mass spectrometry. The nitrogen MIP-MS exhibits linear dynamic ranges of about 3-4 orders of magnitude and low ppb to sub-ppb detection limits for most elements under multielement scanning conditions. Nitrogen MIP-MS is capable of determining K, Ca, Cr, As, and Se at their major isotopes. In addition, nitrogen MIP-MS provides lower detection limits than argon ICP-MS for K (0.48 ppb) and Ca (0.24 ppb). The nitrogen MIP-MS system allows the determination of isotope ratios for 10 ppm of Ca (40/44) and 100 ppb of K (39/41), Cr (52/53), and Se (80/78) with less than 5% error.

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收藏

页码：1003 / 1010

页数：8

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