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Figure 1 Classification of chromatograms are based on the relative abundance of all the peaks in the mixture. Chromatography is an extremely versatile technique for the analytical laboratory. The chromatographic patterns generated by modern instruments are used in a wide variety of quantitative and qualitative analyses. The techniques are robust enough (and we have assembled experience enough) ...

Improvements in microchip technology have produced a new breed of computerized laboratory analysers. Modern analysers have both self-acting and self-regulating mechanisms. Automatic self-checking diagnostics allow preventive service and repair. An instrument can be implemented through changes in software. Chemometrics help to check reagent integrity, validate calibration, and quality control. C...

a model capable of predicting the minimum content of aflatoxin m1 (afm1) in iranian while brine cheese has been developed using a chemometric approach to determine the optimum processing conditions. renneting temperature, cut size, stirring time, press time, curd size and saturated brine ph were all regarded as process variables. three-dimensional response surface and contour plots were drawn. ...

Chemometrics has been defined as the discipline that provides maximum information from chemical data. Food science and technology applications use data are therefore suitable for chemometrics evaluation. Bibliometric studies provide an enhanced understanding of progression, research status well future trends a field. The main aim study was therefore, to bibliometric evaluation literature employ...

The capability of a phthalocyanine-based voltammetric electronic tongue to analyze strong alcoholic beverages has been evaluated and compared with the performance of spectroscopic techniques coupled to chemometrics. Nalewka Polish liqueurs prepared from five apple varieties have been used as a model of strong liqueurs. Principal Component Analysis has demonstrated that the best discrimination b...

Background Nowadays, Radix Polygoni Multiflori (RPM, Heshouwu in Chinese) from different geographical origins were used in clinic. In order to characterize the chemical profiles of different geographical origins of RPM samples, ultra-high performance liquid chromatography quadrupole time of flight mass spectrometry (UPLC-QTOF/MS) combined with chemometrics (partial least squared discriminant an...

Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of ...

Scientists involved in environmental studies are faced with many different analytical tasks, such as assembling baseline studies, evaluating the contributing influence of chemical discharge to complex natural systems, and modeling biological response. Industrial scientists are concerned with the mechanics of recycling materials and maintaining process control systems that minimize pollution. Go...

facts of historic significance including clothing, upholstery, banners and decorations. However, it is a fragile material and is prone to deterioration via a variety of mechanisms, particularly after certain historically common processing methods such as bleaching and weighting. Therefore it is important to be able to accurately characterise the material in order to inform the most appropriate ...