Analyzing TOF-SIMS spectra of biopolymer using multivariate curve resolution
نویسندگان
چکیده
منابع مشابه
Explanatory multivariate analysis of ToF-SIMS spectra for the discrimination of bacterial isolates.
Multivariate analysis (PC-CVA and GA-CVA) was carried out on time-of-flight secondary ion mass spectra (ToF-SIMS) derived from 16 bacterial isolates associated with urinary tract infections, with an objective of extracting the spectral information relevant to their species-level discrimination. The use of spectral pre-processing, such as removal of the dominant peaks prior to analysis and analy...
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Many researchers consider biofuels, including bioethanol and biodiesel, as a resource to supplement or replace large portions of future transportation fuel requirements. This shift in research focus is due in part to limitations in fossil resources and recent concerns about the environment. Lignocellulosic biomass (for example, agricultural resides, forestry wastes, and energy crops) has been h...
متن کاملToF-SIMS studies of Bacillus using multivariate analysis with possible identification and taxonomic applications
In this paper we discuss the application of ToF-SIMS with an Au3 + primary ion beam, combined with principal components analysis (PCA) and discriminant function analysis (DFA) for the identification of individual strains of two Bacillus species. The ToF-SIMS PC-DFA methodology is capable of distinguishing bacteria at the strain level based on analysis of surface chemical species. By classifying...
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A novel method with quaternary ammonium salts as internal additives has been applied to the mass scale calibration of time-of-flight secondary ion mass spectrometry (TOF-SIMS). Five kinds of quaternary ammonium salts, octyltrimethylammonium bromide (C8TMA), tetradecyltrimethylammonium chloride (C14TMA), octadecytrimethylammonium chloride (C18TMA), cetylpyridinium chloride (CPC) and benzyldimeth...
متن کاملTOF-SIMS in Cosmochemistry
Time-of-flight secondary ion mass spectrometry (TOF-SIMS) was introduced into cosmochemistry about a decade ago. Major advantages of TOF-SIMS compared to other ion microprobe techniques are (a) parallel detection of all secondary ions with one polarity in a single measurement – both polarities in subsequent analyses, (b) high lateral resolution, (c) sufficient mass resolution for separation of ...
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ژورنال
عنوان ژورنال: Journal of Surface Analysis
سال: 2011
ISSN: 1341-1756,1347-8400
DOI: 10.1384/jsa.17.220