Abstract Solution cathode glow discharge-atomic emission spectrometry (SCGD-AES) has attracted wide attention globally in recent years. The technology has the advantages of on-line detection of various metal elements, small volume, and convenience. In this work, the original spectrometer based on SCGD-AES technology was replaced by filter-wheel, photomultiplier tube (PMT) and picoammeter, which was named FPP spectral discrimination device. Analytical performance of the device with narrow-band monochromator (0.08 nm) was compared to its performance with wide-bandpass filters (10 nm) with optimized spatial. The relative standard deviation of SCGD-FPP for Na, K, Ca, Li, Sr, Rb, and Cs ranged from 0.2 to 0.8%, comparable to the 0.6 to 1.4% with the monochromator. With optimized spatial resolution, the detection limits ranged from 0.15 to 350 μg/L, and the optimal plasma spectral collected points of Na, K, Ca, Li, Sr, Rb, and Cs at 0.8 mm, 0.8 mm, 0.6 mm, 0.4 mm, 0.2 mm, 0.6 mm, and 0.6 mm, respectively. The deviation analysis of the samples containing Na, K, Ca, and Li were analyzed under optimal conditions. The results show that a SCGD-FPP source with spatial resolution improved the detection performance.

中文翻译：

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溶液阴极辉光放电源与干涉滤光轮耦合作为光谱鉴别装置的空间分辨特性

摘要 溶液阴极辉光放电-原子发射光谱法（SCGD-AES）近年来在全球引起了广泛关注。该技术具有多种金属元素在线检测、体积小、使用方便等优点。在这项工作中，原来的基于SCGD-AES技术的光谱仪被滤光轮、光电倍增管（PMT）和皮安计取代，命名为FPP光谱鉴别装置。将具有窄带单色器 (0.08 nm) 的设备的分析性能与其具有优化空间的宽带通滤波器 (10 nm) 的性能进行了比较。SCGD-FPP 对 Na、K、Ca、Li、Sr、Rb 和 Cs 的相对标准偏差范围为 0.2% 至 0.8%，与单色仪的 0.6% 至 1.4% 相当。优化空间分辨率后，检测限范围为 0.15 至 350 μg/L，Na、K、Ca、Li、Sr、Rb 和 Cs 的最佳等离子体光谱采集点分别为 0.8 mm、0.8 mm、0.6 mm、0.4 mm、0.2 mm、0.6 mm 和 0.6 mm。在最佳条件下对含Na、K、Ca和Li的样品进行偏差分析。结果表明，具有空间分辨率的 SCGD-FPP 源提高了检测性能。