Abstract

A simple and rapid online hydride generation technique based on ultrasonic nebulizer was applied for the first time for the simultaneous determination of trace amounts of As, Bi, Sb, Se and Te by inductively coupled plasma optical emission spectrometry. In this method, we used an ultrasonic nebulizer as a hydride generator and sample introducer simultaneously. An ultrasonic nebulizer was applied for the online hydride generation technique without using any device, such as a gas phase separator, which is mandatory in the classic hydride generation method. This technique improved method detection limit comparing to the traditional hydride generation system which is a necessity in the ultra-trace determination of hydride forming elements. The developed technique shows an improvement factor ranging from 56 to 450 times in detection limits in comparison to a concentric nebulizer. The obtained detection limits were well below the maximum concentration limit. The practical applicability of the developed method was examined using natural water samples.

中文翻译：

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电感耦合等离子体发射光谱法同时测定水样中超痕量氢化物形成元素的新型在线氢化物生成技术

摘要

首次应用基于超声波雾化器的简单，快速的氢化物在线生成技术，通过电感耦合等离子体发射光谱法同时测定痕量的As，Bi，Sb，Se和Te。在这种方法中，我们同时使用了超声波雾化器作为氢化物发生器和样品导入器。在不使用任何设备（例如气相分离器）的情况下，将超声波雾化器用于在线氢化物生成技术，而传统的氢化物生成方法必须使用这种设备。与传统的氢化物生成系统相比，该技术提高了方法的检测限，这是超痕量确定氢化物形成元素的必要条件。与同心雾化器相比，已开发的技术在检测极限方面显示出56到450倍的改善因子。所获得的检测极限远低于最大浓度极限。使用天然水样品检查了所开发方法的实际适用性。