Miller Heather M, Spudich Thomas M, Carnahan Jon W
Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115, USA.
Appl Spectrosc. 2003 Jun;57(6):703-10. doi: 10.1366/000370203322005418.
In two configurations, a solid-state acousto-optic (AO) deflector or modulator is mounted in a 0.5 m monochromator for background correction with inductively coupled plasma atomic emission spectrometry (ICP-AES). A fused silica acousto-optic modulator (AOM) is used in the ultraviolet (UV) spectral region applications while a glass AO deflector (AOD) is used for the visible (VIS) region. The system provides rapid sequential observation of adjacent on- and off-line wavelengths for background correction. Seventeen elements are examined using pneumatic nebulization (PN) and electrothermal vaporization (ETV) sample introduction. Calibration plots were obtained with each sample introduction technique. Potable water and vitamin tablets were analyzed. Flame atomic absorption (FAA) was used to verify the accuracy of the AO background correction system.
在两种配置中，一个固态声光（AO）偏转器或调制器安装在一台0.5米的单色仪中，用于电感耦合等离子体原子发射光谱法（ICP - AES）的背景校正。在紫外（UV）光谱区域应用中使用熔融石英声光调制器（AOM），而在可见（VIS）区域使用玻璃AO偏转器（AOD）。该系统为背景校正提供对相邻在线和离线波长的快速顺序观测。使用气动雾化（PN）和电热蒸发（ETV）进样技术对17种元素进行了检测。用每种进样技术获得了校准曲线。对饮用水和维生素片进行了分析。使用火焰原子吸收法（FAA）验证AO背景校正系统的准确性。
