Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
Talanta. 2017 May 15;167:520-525. doi: 10.1016/j.talanta.2017.02.057. Epub 2017 Feb 27.
An environmentally friendly and highly efficient gas pressure-assisted sample introduction system (GPASIS) was developed for inductively-coupled plasma mass spectrometry. A GPASIS consisting of a gas-pressure control device, a customized nebulizer, and a custom-made spray chamber was fabricated. The advantages of this GPASIS derive from its high nebulization efficiencies, small sample volume requirements, low memory effects, good precision, and zero waste emission. A GPASIS can continuously, and stably, nebulize 10% NaCl solution for more than an hour without clogging. Sensitivity, detection limits, precision, long-term stability, double charge and oxide ion levels, nebulization efficiencies, and matrix effects of the sample introduction system were evaluated. Experimental results indicated that the performance of this GPASIS, was equivalent to, or better than, those obtained by conventional sample introduction systems. This GPASIS was successfully used to determine Cd and Pb by ICP-MS in human plasma.
开发了一种用于电感耦合等离子体质谱的环保高效气体压力辅助进样系统 (GPASIS)。制作了由气体压力控制装置、定制化的雾化器和定制化的喷雾室组成的 GPASIS。这种 GPASIS 的优点在于其具有高雾化效率、小样品体积需求、低记忆效应、良好的精密度和零废物排放。GPASIS 可以连续、稳定地雾化 10%NaCl 溶液一个多小时而不会堵塞。对样品进样系统的灵敏度、检测限、精密度、长期稳定性、双电荷和氧化物离子水平、雾化效率和基体效应进行了评估。实验结果表明，该 GPASIS 的性能与传统样品进样系统相当，甚至更好。该 GPASIS 成功地用于通过 ICP-MS 测定人血浆中的 Cd 和 Pb。
