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评述了近几年来电化学检测在流动注射分析中的应用,展望了流动注射电化学分析法的发展动向。 相似文献
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流动注射分析法与多种仪器分析联用的进展 总被引:3,自引:0,他引:3
金绍祥 《理化检验(化学分册)》2009,45(2)
对流动注射分析法(FIA)与多种仪器分析方法,包括分光光度法、电感耦合等离子体原子发射光谱法(ICP-AES)、原子吸收光谱法(AAS)、化学发光法(CL)、荧光光度法、电化学分析法、生物传感器、毛细管电泳、免疫分析法等联用在最近两年中的新进展作了评述,引述文献42篇. 相似文献
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本文对无相分隔与 /或无相分离的流动注射 -液液萃取技术的进展作了回顾与评述。引用文献 32篇 相似文献
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流动注射在线沉淀共沉淀预分离富集与原子光谱联用的进展 总被引:2,自引:0,他引:2
综述流动注射在线沉淀共沉淀预分离富集与原子光谱联用技术的进展.重点评述了流动注射在线沉淀预分离-火焰原子吸收间接法测定无机阴离子和有机化合物的方法和流动注射在线无滤共沉淀预富集-火焰或电热原子吸收法测定痕量金属离子的方法.共引用文献35篇. 相似文献
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面向新世纪的冶金材料分析 总被引:23,自引:1,他引:22
王海舟 《理化检验(化学分册)》2001,37(1):1-4
21世纪冶金材料分析面临复杂体系中痕量元素分析、冶金材料原位分析以及在线实时分析等三大问题。本文对这三方面的发展趋势进行了评述。 相似文献
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文章介绍了新材料的重要性及发展方向,分析化学在新材料研制中起着耳目的作用,另一方面新材料也为分析化学的进展提供了课题与条件。微量分析、微区分析、表面分析是此领域中的重点。在未来的发展中,分析化学在材料的发展中的地位不会改变,并期待着分析灵敏度与空间分辩率的进一步提高。 相似文献
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Giridharan Loganathan Suresh Krishnaraj Jayaprakash Muthumanickam Ravichandran K 《Journal of Chemometrics》2015,29(1):59-68
In order to bring out the nature of the factors influencing lake water composition, multivariate statistical analysis and trend analysis were performed based on the hydrochemical data of the study area, namely, South Chennai. Change in land use pattern and settlements along the banks of the lakes alters the quality and quantity of the surface water. In the present study, the R‐mode factor analysis and cluster analysis were applied to the geochemical parameters of the water to identify the factors affecting the chemical composition of the lake water. Dendograms of both the seasons give three major clusters, reflecting the groups of unpolluted to moderately polluted, polluted, and heavily polluted stations. The movement of stations from one cluster to another clearly brings out the seasonal variation in the chemical composition of the lake water. The complex hydrochemical data of the surface water were interpreted by condensing them into three major factors. Factor score analysis was used successfully to delineate the stations under study and the role of the contributing factors, and the nature of factors responsible for the variation in chemical composition of the water has been clearly brought out. Results of trend analysis using ArcGIS clearly indicate that the trend in water quality is deteriorating at a faster rate in the eastern part of the study area. It is understood that although natural shifts probably can account for some of the variation, it is most likely that human activities play a major role in affecting the water quality on a regional scale. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
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A new concept based on hyphenation of biotests, for biological selection, and chemical analysis is introduced for water analysis. Biomolecular recognition components such as receptors, enzymes, and nucleic acids integrated in biological reaction chains are used for binding and selective enrichment of known and unknown biologically active substances in water samples; this is followed by identification and quantitation. The coupling of biomolecular recognition and binding to chemical analysis can be achieved either in discrete analytical steps, e.g. binding and elution of bioactive ligands from affinity columns followed by chemical analysis, or by methods capable of monitoring the binding of the ligand and simultaneous verification of its identity. This analytical strategy, denoted bioresponse-linked instrumental analysis (BLIA), enables detection of potential biological effects and identification of the analyte causing these effects. Several examples are presented. 相似文献
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顶空-气相色谱法进展 总被引:17,自引:0,他引:17
回顾了顶空采样气相色谱分析法在复杂基质中挥发性成分中的应用.总结并详述了顶空分析的三种重要模式-介绍了顶空分析的相关原理和整个顶空分析系统的参数优化过程.综述了顶空.气相色谱分析在生物样本中挥发性有机物的测定、药品中有机残留溶剂的检测、聚合材料中挥发性有机物的分析、环境中有害的有机挥发性物质分析、挥发油分析和烟草分析等方面的进展. 相似文献
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There exist large amounts of detergent fiber analysis data [neutral detergent fiber (NDF), acid detergent fiber (ADF), acid
detergent lignin (ADL)] for many different potential cellulosic ethanol feedstocks, since these techniques are widely used
for the analysis of forages. Researchers working in the area of cellulosic ethanol are interested in the structural carbohydrates
in a feedstock (principally glucan and xylan), which are typically determined by acid hydrolysis of the structural fraction
after multiple extractions of the biomass. These so-called dietary fiber analysis methods are significantly more involved
than detergent fiber analysis methods. The purpose of this study was to determine whether it is feasible to correlate detergent
fiber analysis values to glucan and xylan content determined by dietary fiber analysis methods for corn stover. In the detergent
fiber analysis literature cellulose is often estimated as the difference between ADF and ADL, while hemicellulose is often
estimated as the difference between NDF and ADF. Examination of a corn stover dataset containing both detergent fiber analysis
data and dietary fiber analysis data predicted using near infrared spectroscopy shows that correlations between structural
glucan measured using dietary fiber techniques and cellulose estimated using detergent techniques, and between structural
xylan measured using dietary fiber techniques and hemicellulose estimated using detergent techniques are high, but are driven
largely by the underlying correlation between total extractives measured by fiber analysis and NDF/ADF. That is, detergent
analysis data is correlated to dietary fiber analysis data for structural carbohydrates, but only indirectly; the main correlation
is between detergent analysis data and solvent extraction data produced during the dietary fiber analysis procedure. 相似文献
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X射线荧光光谱法在稀土元素分析中的应用 总被引:6,自引:0,他引:6
本文研究了X射线荧光光谱在混合稀土氧化物和高纯稀土氧化物分析中的应用,并探讨了在常量分析中影响分析准确度和精密度的主要因素;样品及标样制备,基体效应校正方法在痕量分析中降低检测限的方法,选择最佳测量条件,降低背景,与分离富集手段相结合,取得满意的结果。 相似文献
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The objective of this contribution is to review the application of advanced multivariate data-analysis techniques in the field
of mid-infrared (MIR) spectroscopic biomedical diagnosis. MIR spectroscopy is a powerful chemical analysis tool for detecting
biomedically relevant constituents such as DNA/RNA, proteins, carbohydrates, lipids, etc., and even diseases or disease progression
that may induce changes in the chemical composition or structure of biological systems including cells, tissues, and bio-fluids.
However, MIR spectra of multiple constituents are usually characterized by strongly overlapping spectral features reflecting
the complexity of biological samples. Consequently, MIR spectra of biological samples are frequently difficult to interpret
by simple data-analysis techniques. Hence, with increasing complexity of the sample matrix more sophisticated mathematical
and statistical data analysis routines are required for deconvoluting spectroscopic data and for providing useful results
from information-rich spectroscopic signals. A large body of work relates to the combination of multivariate data-analysis
techniques with MIR spectroscopy, and has been applied by a variety of research groups to biomedically relevant areas such
as cancer detection and analysis, artery diseases, biomarkers, and other pathologies. The reported results indeed reveal a
promising perspective for more widespread application of multivariate data analysis in assisting MIR spectroscopy as a screening
or diagnostic tool in biomedical research and clinical studies. While the authors do not mean to ignore any relevant contributions
to biomedical analysis across the entire electromagnetic spectrum, they confine the discussion in this contribution to the
mid-infrared spectral range as a potentially very useful, yet underutilized frequency region. Selected representative examples
without claiming completeness will demonstrate a range of biomedical diagnostic applications with particular emphasis on the
advantageous interaction between multivariate data analysis and MIR spectroscopy. 相似文献
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我国化学物相分析的进展 总被引:10,自引:0,他引:10
对我国化学物相分析的最新成就和进展作了简要评述,内容包括概述、物质相态分析、元素赋存状态分析以及非金属矿物相分析等。引用近十年来的主要文献100篇。 相似文献