Conversion of a sequential inductively coupled plasma emission spectrometer into a multichannel simultaneous system using a photodiode array detector.

M F Pimentel, M C Araújo, B de B Neto, C Pasquini
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引用次数: 4

Abstract

A monochannel plasma emission spectrometer was converted to a multichannel instrument by the introduction of a detection system based on an array of 1024 photodiodes and a low-resolution dispersion device. The new, relatively inexpensive equipment, features both the high speed typical of simultaneous instruments and the versatility of scanning systems. This paper reports on an evaluation of the modified equipment for quantitative analysis with the simultaneous determination of Al, Mn, Mg, Ca, Fe and Cu in a natural water matrix. An average relative prediction error of 2.4% was found which is the same as the error obtained with the conventional analytical method. Data acquisition with the modified instrument is up to 40 times faster.

用光电二极管阵列探测器将顺序电感耦合等离子体发射光谱仪转换成多通道同步系统。
通过引入基于1024个光电二极管阵列和低分辨率色散器件的检测系统,将单通道等离子体发射光谱仪转变为多通道仪器。新的,相对便宜的设备,特点是高速典型的同步仪器和多功能性的扫描系统。本文对改进后的同时测定天然水基质中Al、Mn、Mg、Ca、Fe和Cu的定量分析设备进行了评价。平均相对预测误差为2.4%,与常规分析方法的预测误差相同。改进后的仪器数据采集速度提高了40倍。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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