Abstract

It has been shown that Grand spectrometers based on a hybrid assembly of BLPP-2000 photodetector arrays produced by VMK-Optoelektronika can be used for atomic emission spectral analysis of solutions using inductively coupled plasma atomic emission spectroscopy (ICP-AES). For the prototype of a Grand-ICP spectrometer consisting of a Grand spectrometer, RF plasma generator, and RF (radio frequency) power supply the following analytical characteristics were determined: element detection limit, long-term stability linear ranges of calibration graphs for several elements, and optimal operating parameters of the RF generator. The linear concentration range of analyte elements is 10⁵ when using a single analytical line of the element. The long-term stability is less than 2% in 6 h without using an internal standard. The detection limits are comparable to those of modern ICP spectrometers with an axial plasma view and lie in a range of sub-microgram per liter. It has been found that the effect of superposition of the spectral lines of the plasma background, for example, OH molecular lines or others, on the analyte lines can be eliminated by subtracting the blank sample spectrum from the analyte spectrum using Atom software. The analytical characteristics of the spectrometer allow the use of the device both for developing new ICP-based systems and for restoring the performance of defective ICP spectrometers.

中文翻译：

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大光谱仪在电感耦合等离子体分析溶液中的分析能力

摘要

已经表明，基于由VMK-Optoelektronika生产的BLPP-2000光电探测器阵列的混合组件的Grand光谱仪可用于使用电感耦合等离子体原子发射光谱法（ICP-AES）的溶液的原子发射光谱分析。对于由Grand光谱仪，RF等离子发生器和RF（射频）电源组成的Grand-ICP光谱仪的原型，确定了以下分析特征：元素检测极限，多个元素的校准图的长期稳定性线性范围，以及RF发生器的最佳工作参数。分析物元素的线性浓度范围是10 ⁵当使用元素的单个分析线时。在不使用内标物的情况下，其在6小时内的长期稳定性低于2％。其检测极限可与具有轴向等离子体视图的现代ICP光谱仪相媲美，并且在每升亚微克范围内。已经发现，通过使用Atom软件从分析物光谱中减去空白样品光谱，可以消除等离子体背景的光谱线（例如，OH分子线等）在分析物线上的叠加影响。光谱仪的分析特性允许将该设备用于开发基于ICP的新系统和恢复有缺陷的ICP光谱仪的性能。