Analytical Instrumentation
Improve High Temperature Simulated Distillation with MXT®-1HT SimDist Columns
May 03 2012
Author: Barry Burger on behalf of Restek Corp
High temperature simulated distillation of crude oil for the determination of medium and heavy fraction petroleum distillates presents many challenges to refineries and contract laboratories. Due to the high boiling points of the hydrocarbons being analysed, both the column construction and the polymer used as the stationary phase must be robust enough to withstand the high temperatures required for analysis without significant degradation. Columns must yield sharp, symmetrical peaks that meet method requirements for resolution and peak shape. ASTM methods D6352, D7500, D7213, and D7169 all specify C50/C52 resolution values and list criteria for skewness (Table I). Low bleed, high efficiency, metal MXT®-1HT SimDist columns reliably meet all critical parameters and ensure accurate boiling point determination for simulated distillation methods.
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