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基于Design-Expert软件对原子吸收光谱仪工作参数优化 预览

Design and Parameter Optimization of Atomic Absorption Spectrometer Using Design-Expert Software
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摘要 将响应表面试验设计方法(RSM)应用于原子吸收光谱仪工作参数优化,以铜元素为目标化合物,结合Design-Expert软件进行数据处理.结果表明,单因素试验最佳工作条件:仪器灯电流15 m A,仪器吸喷速率7 m L/min,仪器乙炔气流量3.00 L/min.中心组合试验结果表明:当吸喷速率为7 m L/min、乙炔气流量为2.25 L/min、灯电流为10 m A时,仪器灵敏度最好. In most conventional studies, design and parameter optimization of atomic absorption spectrometer(AAS) is usually carried out using a single-varialble-at-a-time (SVAT, the most common practice holding all other variable constants) method, but the method is time-consuming, cannot identify the interactions between different variables, and is inefficient to predict the true optimized parameters of the operating conditions. The central composite design(CCD) is one of the methods based on the response surface methodology(RSM). CCD used in this study can overcome the above mentioned shortcomings. Copper is used as the target compound for the test, and the Cu concentrations were analyzed by AAS with different operating parameters of such as acetylene flow, lamp current and sample inject rate. The results showed, that the optimized conditions were acetylene flow at 3.00 L/min, lamp current at 10 mA or sample inject at 7 mL/min by the single-varialble-at-a-time. Three experimental variables including acetylene flow, lamp current and sample inject were selected in the multivariable experimental design. The optimized conditions were:acetylene flow at 2.25 L/min, lamp current at 10 mA and sample inject 7 mL/min.
作者 廖伟 谢亨旺 刘永林 才硕 苏甜 LIAO Wei1,2, XIE Heng-wang1, LIU Yong-lin2 , CAI Shuo 1, SU Tian1 ( 1. Irrigation Experiment Station of Jiangxi, Nanchang 330201, China; 2. Jiangxi Institute of Analysis, Nanchang 330029, China)
出处 《分析测试技术与仪器》 CAS 2018年第3期143-150,共8页 Analysis and Testing Technology and Instruments
基金 江西省水利厅重大水利科技资助项目(KT201502) 江西省重点研发计划资助项目(20171BBH80018)
关键词 Design-Expert 原子吸收光谱仪 响应曲面设计法 参数优化 Design-Expert AAS response surface method parameter optimization
作者简介 廖伟(1987-),男,工程师,硕士,主要从事农村水质监测、水环境保护与治理相关研究,E—mail:lovy21@163.com.
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