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1.
光度分析的现状和进展   总被引:4,自引:0,他引:4  
本文评述了1986年3月—1988年8月期间我国光度分析的概况,内容包括多元络合物、多波长及导数光度法、动力学光度法、荧光光度法、浮选光度法、差示光度法及计算数学光度法。参考文献425篇。  相似文献   

2.
钒光度分析研究的进展   总被引:5,自引:0,他引:5  
从经典光度法、动力学光度法、流动注射光度法及计算光度法综述了近年来钒的光度分析进展,引用文献46篇。  相似文献   

3.
钼的光度分析近况   总被引:4,自引:0,他引:4  
评述了国内钼的光度分析近况。内容包括新高灵敏试剂法、普通光度法、动力学光度光、荧光及化学发光光度法、计算光度法及其它。共引用文献60篇。  相似文献   

4.
稀土光度分析的某些进展   总被引:13,自引:0,他引:13  
综述了近5年来稀土光度分析的某些进展,涉及吸光光度法、固相光度法、导数光度法、计算光度法和流动注射光度法等经典及现代光度分析法在稀土分析中的应用,引用文献50篇.  相似文献   

5.
双波长分光光度法的研究进展   总被引:7,自引:0,他引:7  
文中对双波长分光光度法在近十年来的研究进展作了评述。内容分为4部分:①常规双波长分光光度法;②标准加入法-双波长分光光度法;③计算双波长分光光度法及④双峰双波长分光光度法,引述文献23篇。  相似文献   

6.
光度分析   总被引:26,自引:0,他引:26  
本文是《分析试验室》定期评述中“光度分析”的第七篇文章。评述了1996.7-1998.6期间我国光度分析的概况。内容包括:学术会议,标准,专著及综术,有机试剂,二元显色体系,多元络合物,动力学光度法,荧光光度法,萃取,浮选及固相光度法,其它光度法。  相似文献   

7.
对近年来国内铋的光度法测定的状况作了评述,主要涉及自2000年到2010年间各类显色剂在分光光度法中的应用,以及铋的光度测定在阻抑动力学、催化动力学及荧光光度法及原子荧光光谱法中的应用等内容(引用文献40篇)。  相似文献   

8.
袖珍计算机在三波长分光光度法中的应用   总被引:1,自引:0,他引:1  
近年来提出的三波长分光光度法能够有效地扣除多种背景干扰,适用范围比双波长分光光度法更为广泛,用国产分光光度计进行三波长分光光度法测定的可行性已得到验证。但目前大多数国产分光光度计都没有微处理机及绘图装置,使应用三波长分光光度法的步骤较繁,为推广三波长分光光度法的应用,本文在前人工作的基础上编制了一套专用  相似文献   

9.
(8)应用二安替比林光度法的讨论以上列举了在钢铁及非铁合金中应用DAPM光度法测定钛的7种方法。方法之间主要不同点反映在酸度、酸的介质、DAPM试剂的加入量及显色反应所需时间等方面,详见表18。在金属材料分析中应用二安替比林甲烷光度法测定钛,从表18中可以获得如下的启示:①显色溶液的介质、盐酸介质略优于硫酸介表18 DAPM光度法测定钛的显色条件的比较Tab.18 ConditionsofcolorreactionsofDAPMphotometricmethods方法及分析对象Methodandobjectofanalysis测定范围及取样量Rangeofdeterminationandmacsofsample显色体积及…  相似文献   

10.
测定血液中异烟肼的浓度,是检查异烟肼片剂在生物体内生物利用度的一个重要课题。通常测定血清异烟肼浓度的方法有荧光光度法,分光光度法,比色法及微生物法,其中荧光光度法测定的灵敏度最高。本工作主要改进了  相似文献   

11.
Selectivity and specificity are performance characteristics of analytical methods which are frequently used in analytical literature. In general, the terms are applied verbally and a quantification of selectivity and specificity is given rarely. Excepted are methods like chromatography and ISE sensoring which use individual quantities such as selectivity coefficients, indices and other parameters to characterize analytical procedures and systems. Here a proposal is given to characterize selectivity and specificity quantitatively by relative values in a range of 0 to 1 expressing so a certain degree of selectivity and specificity. By examples it will be shown that the derived quantities characterize analytical methods and problems in a plausible way.  相似文献   

12.
Selectivity and specificity are performance characteristics of analytical methods which are frequently used in analytical literature. In general, the terms are applied verbally and a quantification of selectivity and specificity is given rarely. Excepted are methods like chromatography and ISE sensoring which use individual quantities such as selectivity coefficients, indices and other parameters to characterize analytical procedures and systems. Here a proposal is given to characterize selectivity and specificity quantitatively by relative values in a range of 0 to 1 expressing so a certain degree of selectivity and specificity. By examples it will be shown that the derived quantities characterize analytical methods and problems in a plausible way.  相似文献   

13.
14.
Adequate very sensitive quantification methods are needed for the development and are also now required for the monitoring of undesirable solid form(s) as routine tests. The pre-requisite for quantitation are selectivity, sensitivity and most important the purity of standards and their proper storage, what is a challenge for metastable forms. Several analytical techniques are available such as X-ray diffraction, spectroscopy, thermal analysis and microcalorimetry. The different steps of the validation of the analytical methods and problems to be solved are discussed. Examples illustrate the different techniques and compare their possible advantages and limits. The relative standard deviation of measurements should allow for checking the homogenization procedure of mixtures for calibration. The validation should be carried out following ICH guidelines for validation of analytical methods. Comparison of different techniques in adequate concentration range add confidence in the analytical results.  相似文献   

15.
The quality of water destined for human consumption has been treated as a multivariate property. Since most of the quality parameters are obtained by applying analytical methods, the routine analytical laboratory (responsible for the accuracy of analytical data) has been treated as a process system for water quality estimation. Multivariate tools, based on principal component analysis (PCA) and partial least squares (PLS) regression, are used in the present paper to: (i) study the main factors of the latent data structure and (ii) characterize the water samples and the analytical methods in terms of multivariate quality control (MQC). Such tools could warn of both possible health risks related to anomalous sample composition and failures in the analytical methods.  相似文献   

16.
This tutorial review deals with the analytical methods available for the determination of mycotoxins in food commodities. As the secondary metabolites of a range of fungal species, mycotoxins possess diverse chemical structures, presenting analytical chemists with a unique set of challenges in the microg kg(-1) (ppb) range. A number of analytical methods have been applied to mycotoxin analysis. These include widely applicable HPLC methods with UV or fluorimetric detection, which are extensively used both in research and for legal enforcement of food safety legislation and for regulations in international agricultural trade. Other chromatographic methods, such as TLC and GC, are also employed for the determination of mycotoxins, whereas recent advances in analytical instrumentation have highlighted the potential of LC-MS methods, especially for multi-toxin determination and for confirmation purposes. Conventional chromatographic methods are generally time consuming and capital intensive, and hence a range of methods, mostly based on immunological principles, have been developed and commercialised for rapid analysis. These methods include, among others, enzyme-linked immunosorbent analysis (ELISA), direct fluorimetry, fluorescence polarization, and various biosensors and strip methods.  相似文献   

17.
A review of the well-established and novel analytical methods in mass spectrometry and chromatography-mass spectrometry is presented. General information about the methods is given and their distribution over the fields of analysis and mass spectrometric methods is considered. The classification and validation (certification) of the methods is discussed and their necessary characteristics are specified. The identification criteria contained in the methods and isotope dilution method providing the most precise and accurate results of quantitative analysis are considered. Various characteristics of errors (uncertainty) used in analytical methods are presented.  相似文献   

18.
Valcárcel M  Grases F 《Talanta》1983,30(3):139-143
A review is given of the utilization in analytical chemistry of the rate of fluorescence reactions of inorganic species. These methods are of recent development and suggest the possibility of further analytical procedures. Two main types of methods, enzymatic and non-enzymatic, are distinguished, and their applications to inorganic analysis are discussed.  相似文献   

19.
Different analytical tasks in the pharmaceutical analysis can be classified according to the separation problems into three main groups: trace analysis, assay methods and separation of closely related compounds including isomers. The most important requirements of high-performance liquid chromatographic (HPLC) methods with respect of the separation problems are summarized. Considerations and recommendations for the selection of the most applicable HPLC system to solve particular analytical problems are discussed. HPLC methods can be compared on the basis of the system resolution (SR) and system selectivity (SS). Criteria developed for the characterization of HPLC methods considering the difficulties created by the different analytical problems are established. The principles of the selection of the most applicable separation systems are demonstrated through some practical examples in pharmaceutical analysis.  相似文献   

20.
综述了近年来乳清酸分析方法的研究进展,内容包括紫外-可见分光光度法、荧光分析法、电化学分析法、色谱分析法、色谱-质谱联用法和量热法等几个方面,展望了乳清酸分析方法的发展方向.  相似文献   

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