In the search for greater sample introduction efficiency and enhanced analytical performance with inductively coupled plasma optical emission spectrometry (ICPOES), a conventional ultrasonic nebuliser was modified to replace the heater/condenser with an infrared heated pre-evaporation tube. In continuation from previous works with pre-evaporation, the current work investigated the effects of infrared heating with ceramic block and ceramic beaded rope heaters. Heating temperatures were varied. By monitoring changes to sensitivity, detection limit, precision, and robustness, and analyzing two certified reference materials, a sample introduction system operating at 300 °C and 0.8 mL min⁻¹ sample uptake rate was established, which provided improved sample introduction efficiency and comparable analytical performance to a previous system operating at 400 °C and 1.5 mL min⁻¹. These conditions are robust, with a Mg 280.270 nm/285.213 nm ratio of 12.4 ± 0.3 (n = 6), which enabled the accurate analysis of two certified reference materials with a simple external calibration without internal standardization.

中文翻译：

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使用带有红外加热的预蒸发管的超声雾化器改进对电感耦合等离子体发射光谱法中样品的引入

为了通过电感耦合等离子体发射光谱法（ICPOES）寻求更高的样品引入效率和增强的分析性能，对常规超声雾化器进行了改进，以用红外加热的预蒸发管代替加热器/冷凝器。在以前的预蒸发工作的基础上，当前工作研究了陶瓷块和陶瓷串珠式绳加热器对红外加热的影响。加热温度是变化的。通过监测灵敏度，检测限，精密度和耐用性的变化，并分析两种认证的参考物质，可在300°C和0.8 mL min ^-1下运行的样品引入系统建立了样品吸收率，与以前在400°C和1.5 mL min ^-1的系统运行相比，样品吸收率得到了提高，并具有相当的分析性能。这些条件是可靠的，Mg 280.270 nm / 285.213 nm的比率为12.4±0.3（n = 6），从而可以通过简单的外部校准就可以对两种认证的参考材料进行准确的分析，而无需内部标准化。