共查询到19条相似文献,搜索用时 78 毫秒
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化学计量学在电分析化学中的应用 总被引:8,自引:2,他引:8
本文对化学计量学各种方法,诸如多元校正,因子分析,信号处理,参数估计,模式识别等电分析化学中的应用作了回顾及评述,指出了化学计量学电分析化学中应用的良好前景。 相似文献
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化学计量学在有机物电分析化学中的应用 总被引:1,自引:0,他引:1
化学计量学在有机物电分析化学中的应用日益广泛,并发挥重要的作用。本文就化学计量学方法在色素、抗氧化剂、维生素、氨基酸、环境污染物、农药及药物等电分析化学方面的应用作一综述。引用参考文献58篇。 相似文献
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小波分析在分析信号处理中具有诸多显著的优点。本文介绍了小波分析的一般描述,综述了化学计量学在的小波新方法,并展望了小波分析在分析化学计量学中的应用前景。 相似文献
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分析化学计量学中的新方法——小波分析 总被引:22,自引:8,他引:14
小波分析在分析信号处理中具有诸多显著的优点。本文介绍了小波分析的一般描述,综述了化学计量学在的小波新方法,并展望了小波分析在分析化学计量学中的应用前景。 相似文献
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环境与形态分析的化学计量学研究:递推最优滤波与紫外光谱?… 总被引:1,自引:0,他引:1
借助光谱或波谱,电化学分析,色谱或电泳技术,系统研究了环境与形态分析化学计量学即化学计量学在环境与形态分析中的应用。本文将递推最优滤波与紫外光谱相结合,提出了一种多组分同时分析测定的新方法。 相似文献
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This review explores the question whether chemometrics methods enhance the performance of electroanalytical methods. Electroanalysis has long benefited from the well-established techniques such as potentiometric titrations, polarography and voltammetry, and the more novel ones such as electronic tongues and noses, which have enlarged the scope of applications. The electroanalytical methods have been improved with the application of chemometrics for simultaneous quantitative prediction of analytes or qualitative resolution of complex overlapping responses. Typical methods include partial least squares (PLS), artificial neural networks (ANNs), and multiple curve resolution methods (MCR-ALS, N-PLS and PARAFAC). This review aims to provide the practising analyst with a broad guide to electroanalytical applications supported by chemometrics. In this context, after a general consideration of the use of a number of electroanalytical techniques with the aid of chemometrics methods, several overviews follow with each one focusing on an important field of application such as food, pharmaceuticals, pesticides and the environment. The growth of chemometrics in conjunction with electronic tongue and nose sensors is highlighted, and this is followed by an overview of the use of chemometrics for the resolution of complicated profiles for qualitative identification of analytes, especially with the use of the MCR-ALS methodology. Finally, the performance of electroanalytical methods is compared with that of some spectrophotometric procedures on the basis of figures-of-merit. This showed that electroanalytical methods can perform as well as the spectrophotometric ones. PLS-1 appears to be the method of practical choice if the %relative prediction error of ∼±10% is acceptable. 相似文献
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以伏安法实验教学为例,分析探讨了电分析化学实验教学的改革历程。改革后的实验内容融入了先进的实验技术,增强了其应用性和体验性;改进后的实验项目紧扣社会需求,实用性强,有效地提高了学生对电分析化学实验的学习兴趣和实验教学效果。 相似文献
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碳薄膜电极材料在电分析化学中的应用* 总被引:1,自引:0,他引:1
由于具有一系列的优点,碳材料被广泛地应用于电分析化学。新型碳电极材料的开发及其性质研究对电分析化学的发展起着重要的推动作用。最近文献报道了一些制备新型碳薄膜电极材料的方法,因为制备方法不同,这些碳薄膜材料的电化学性质如电位窗、稳定性、导电性也显著不同。人们对电位窗宽、背景电流低、稳定性高、表面不易被电极产物钝化的碳薄膜电极材料的研究非常活跃。本文综述了采用不同方法制备的一些碳薄膜电极材料如硼掺杂的金刚石薄膜、无定形碳和纳米晶体碳薄膜材料等在电分析化学中应用。 相似文献
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MATLAB在化学计量学中的应用 总被引:9,自引:0,他引:9
化学计量学是数学和统计学,化学及计算机科学相互交叉形成的一门新的化学分支学科,是解决化学问题的强有力工具,目前运用于化学计量学的商品软件有MATLAB、Maple,MathCAD,EXCEL,SPSS等。MATLAB是一种高性能的数值计算的科学计算语言,具有程序开发环境简洁直观,数值稳定性好,函数资源丰富的特点,本文以几种常用的化学计量学方法为例,讨论了MATLAB在化学中的应用。 相似文献
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G. Kateman 《Trends in analytical chemistry : TRAC》1983,2(3):XI-XII
In the field of analytical chemistry, chemometrics has been defined as 'the chemical discipline which uses mathematical and statistical methods to achieve the aim of analytical chemistry, namely the obtention, in the optimal way, of relevant information about material systems'. There has been a tremendous growth of interest in the role of chemometrics in analytical chemistry in recent years and this has been reflected in the number of symposia devoted to the subject. Two meetings, held in Europe in September 1982, covered different aspects of chemometrics and some of the more significant points discussed are summarized in the reports below. 相似文献