comparison between conventional and cross-correlation gas chromatography for evolved gas analysis

Kaljurand, Mihkel; Küllik, E.

doi:10.1016/s0021-9673(00)95243-9

Cited by 20 publications

(9 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The crosscorrelation chromatography method has been used thus far only for trace analysis 15–18. However, this method, which is based on classical statistics, cannot extract the synchronous property of the dynamic processes that are characteristic of the complex multiple steps in a polymerization.…”

Section: Introductionmentioning

confidence: 99%

Two‐dimensional correlation gel permeation chromatography study of aggregate–aggregate interactions during acid‐catalyzed polymerization of triethoxysilyl‐terminated polystyrene

Suzuki

Oku

Izawa

et al. 2004

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

The three-step polymerization of a well-defined polymeric silane coupling agent, triethoxysilyl-terminated polystyrene, catalyzed by acid (H 3 PO 4 ), was traced as a function of the reaction time with gel permeation chromatography (GPC). Timeresolved GPC traces collected during the polymerization process were then used to construct two-dimensional (2D) correlation maps via generalized 2D correlation analysis. The results demonstrated that the synchronous and asynchronous 2D correlation GPC spectra directly reflected the dynamic variation of aggregate-aggregate interactions during each step of the polymerization. In particular, it was found that the formation of aggregates among the cyclic trimers (or tetramers) and monomers was critical for the preferential production of pentamers in the reaction system.

show abstract

Section: Introductionmentioning

confidence: 99%

Two‐dimensional correlation gel permeation chromatography study of aggregate–aggregate interactions during acid‐catalyzed polymerization of triethoxysilyl‐terminated polystyrene

Suzuki

Oku

Izawa

et al. 2004

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

show abstract

“…[15][16][17][18] However, the CCC method, which is based on classical statistics, cannot extract the asynchronous nature of dynamic processes characteristic of complex multiple stage polymerization reactions. The concept of a generalized 2D correlation, as introduced by Noda, 2 made it possible to analyze systematically such asynchronous characteristics.…”

mentioning

confidence: 99%

Two-dimensional Correlation Gel Permeation Chromatography (2D GPC) Study of Aggregate–Aggregate Interactions during Polymerization of 3-(Triethoxysilyl)propyl-terminated Polystyrene

Suzuki

Oku

Izawa

et al. 2004

Polym J

View full text Add to dashboard Cite

ABSTRACT:The three-step polymerization process of a well-defined polymeric silane coupling agent, 3-(triethoxysilyl)propyl-terminated polystyrene, catalyzed by 1 mol/kg KOH-H 2 O, was traced as a function of reaction time using a gel-permeation chromatography (GPC) technique. A set of GPC traces collected during the polymerization was then converted to two-dimensional (2D) correlation maps, by using generalized 2D correlation analysis. The 2D correlation GPC maps reflected the details of the aggregational behavior (in particular, the aggregate-aggregate correlations) in each step of the polymerization, thus demonstrating the promising potential of this technique.

show abstract

“…Both non-linearities and non-stationarities result in extra baseline noise in the correlogram. This noise is generally called correlation noise and has been extensively discussed in literature [8,14,20,26]. A special kind of correlation noise are ghost peaks.…”

Section: Resultsmentioning

confidence: 99%

“…For more than one point per CP (w > 1) cross-correlation results in a correlogram with a broadened peak compared to a single injection. To get a correlogram which is comparable with the electropherogram of a single injection (b w * h), cross-correlation between the detector signal and a signal Pk (i) is necessary [15]: (5) An elaborated explanation of the procedures for the deconvolution of y (i) can be found in literature [15,20,21]. The cross-correlation between Pk (i) and n (i) in Eq.…”

Section: Theorymentioning

confidence: 99%

Correlation capillary zone electrophoresis, a novel technique to decrease detection limits

et al. 1995

View full text Add to dashboard Cite

General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf 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 the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. SummaryThe application of multiple injections and correlation techniques in capillary zone electrophoresis, a method known for its high detection limits, is described. An experimental electrokinetic injection device, particulary suited for fast and reproducible multiple injections is used in combination with a conventional CZE system. The results show a considerable reduction of the detection limit, in agreement with the experience in the already fully developed correlation chromatographic methods, and in agreement with the theoretical predicted values.

show abstract

comparison between conventional and cross-correlation gas chromatography for evolved gas analysis

Cited by 20 publications

References 13 publications

Two‐dimensional correlation gel permeation chromatography study of aggregate–aggregate interactions during acid‐catalyzed polymerization of triethoxysilyl‐terminated polystyrene

Two‐dimensional correlation gel permeation chromatography study of aggregate–aggregate interactions during acid‐catalyzed polymerization of triethoxysilyl‐terminated polystyrene

Two-dimensional Correlation Gel Permeation Chromatography (2D GPC) Study of Aggregate–Aggregate Interactions during Polymerization of 3-(Triethoxysilyl)propyl-terminated Polystyrene

Correlation capillary zone electrophoresis, a novel technique to decrease detection limits

Contact Info

Product

Resources

About