New chromatographic methods for asphalt analysis

被引:0
|
作者
Bartle, Keith D. [1 ]
Burke, Michael [1 ]
Mills, Derek G. [1 ]
Pape, Shaun [1 ]
Lu, Shi-Lin [1 ]
机构
[1] Univ of Leeds, Leeds, United Kingdom
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Chromatographic Analysis - Size Exclusion - Extraction - Supercritical Fluid;
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摘要
New methods in the analysis of asphalt by size exclusion chromatography (SEC) and supercritical fluid chromatography (SFC) are described. The evaporative analyser and viscometric detectors provide a more nearly universal response in SEC than does the UV detector; a number of alternatives to polystyrene as retention volume calibration standards were investigated. SFC permitted simulated distillation at much lower temperatures than in GC, with closer correspondence to actual distillation behaviour.
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页码:1071 / 1082
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