CCD-Ⅰ型平面光栅电弧直读发射光谱仪在地矿实验室的应用与优化

发布时间：2018-05-25 20:00

本文选题：线阵CCD + 光谱分析仪　；参考：《吉林大学》2016年硕士论文

【摘要】：近十年来,地质事业经历了又一个发展黄金期,国家不断加大地质勘查力度,各地勘实验室也不断引进大型先进仪器设备和新方法,提升装备水平和样品分析技术能力。与此同时,发射光谱法作为测定地质样品中的银铅钼锡等元素的经典方法,应用近四十年,分析水平相对落后,一直没有更好的替代方法。对于发射光谱法的研究,大多集中于前处理方法和译谱方式的优化,始终不能完全解决分析流程长,材料种类多,质量参差不齐,分析结果不稳定的缺陷。本文引进CCD直读改装技术,在摄谱仪原相板盒部位加装CCD采集系统和控制系统,在摄谱过程中直接读出结果,完全摒弃了相板摄谱中暗室洗相、相板译谱的过程,简化分析流程,提高分析的准确度和稳定性。通过仪器条件对比实验、样品前处理流程优化实验、电极加工工艺革新实验,选定了最佳仪器参数、改善了光谱分析结果的稳定性、节约了分析成本。经验证,准确度、精密度、检出限和合格率各项指标均满足地质矿产实验室测试质量管理规范(DZ/T 0130-2006)的要求。CCD-I型平面光栅电弧直读发射光谱仪的优化及其应用简化分析流程,减少分析误差,提高分析测试的质量,节约成本,加快分析速度,减轻光谱分析人员的劳动强度,提高了电弧发射光谱仪分析地质样品的分析技术水平。
[Abstract]:In the past ten years, geological undertakings have experienced another golden period of development, the state has continuously increased the intensity of geological exploration, and local prospecting laboratories have continuously introduced large-scale advanced instruments, equipment and new methods to enhance the level of equipment and the technical capability of sample analysis. At the same time, as a classical method for the determination of silver, lead, molybdenum, tin and other elements in geological samples, the emission spectrometry has been used for nearly 40 years, the analytical level is relatively backward, and there has been no better alternative method. For the study of emission spectrum, most of them focus on the optimization of pre-processing method and spectral translation method, which can not completely solve the problems of long analytical process, many kinds of materials, uneven quality and unstable analytical results. In this paper, the CCD direct reading modification technology is introduced, and the CCD acquisition system and control system are added to the original phase plate box of the spectrograph. The results are read out directly during the photograph process, and the process of the dark chamber washing and the phase plate translation in the phase plate spectrum is completely abandoned. Simplify the analysis process and improve the accuracy and stability of the analysis. By means of instrument condition contrast experiment, sample pretreatment process optimization experiment, electrode processing process innovation experiment, the optimum instrument parameters are selected, the stability of spectrum analysis result is improved, and the analysis cost is saved. It has been proved that the accuracy, precision, detection limit and qualified rate all meet the requirements of DZ / T0130-2006. The optimization of CCD-I plane grating arc direct reading emission spectrometer and its application and simplified analysis flow. The analysis error is reduced, the quality of analysis and test is improved, the cost is saved, the speed of analysis is quickened, the labor intensity of spectrum analyst is reduced, and the technical level of analysis of geological sample by arc emission spectrometer is improved.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P624

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