TY - JOUR

T1 - Determination of Hydrocarbons in n-Butane on Porous Layer Capillary Columns with Nonpolar Stationary Phase

AU - Yakovleva, Elena Y.

AU - Patrushev, Yuri V.

N1 - Funding Information: This work was supported by the Ministry of Science and Higher Education of the Russian Federation within the governmental order for Boreskov Institute of Catalysis (projects AAAA-A21-121011390007-7, AAAA-A21-121011390053-4). Publisher Copyright: © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

PY - 2021/12

Y1 - 2021/12

N2 - A comparative assessment is performed of the separation capability of three types of PLOT capillary columns: PTMSP032 (poly(1-trimethylsilyl-1-propyne)), Rt-Q-BOND (polydivinylbenzene), GS-GasPro (silica), and it is studied of the possibility of their use for the determination of impurities in commercial (target, technical) n-butane. Satisfactory separation of alkanes, alkenes, arenes and methanol was achieved on PTMSP032 and Rt-Q-BOND columns. The effect of the main component amount of the mixture on the separation of trace amounts of hydrocarbons and methanol is studied. It is shown that the macrozone (> 99%) of n-butane is selectively separated from the accompanying impurities. With an increase in the injected sample volume, the resolution for the peaks of C1–C2 hydrocarbons and the structural isomers of o-, m-, and p-xylenes on the PTMSP032 column is significantly higher than on the Rt-Q-BOND column. A comparative assessment of the precision of the measurements of the hydrocarbons and methanol retention times on PTMSP032 and Rt-Q-BOND is characterized by a relative standard deviation (RSD) of not more than 0.3%.

AB - A comparative assessment is performed of the separation capability of three types of PLOT capillary columns: PTMSP032 (poly(1-trimethylsilyl-1-propyne)), Rt-Q-BOND (polydivinylbenzene), GS-GasPro (silica), and it is studied of the possibility of their use for the determination of impurities in commercial (target, technical) n-butane. Satisfactory separation of alkanes, alkenes, arenes and methanol was achieved on PTMSP032 and Rt-Q-BOND columns. The effect of the main component amount of the mixture on the separation of trace amounts of hydrocarbons and methanol is studied. It is shown that the macrozone (> 99%) of n-butane is selectively separated from the accompanying impurities. With an increase in the injected sample volume, the resolution for the peaks of C1–C2 hydrocarbons and the structural isomers of o-, m-, and p-xylenes on the PTMSP032 column is significantly higher than on the Rt-Q-BOND column. A comparative assessment of the precision of the measurements of the hydrocarbons and methanol retention times on PTMSP032 and Rt-Q-BOND is characterized by a relative standard deviation (RSD) of not more than 0.3%.

KW - Impurities in n-butane

KW - Loading capacity

KW - PLOT columns

KW - Poly(1-trimethylsilyl-1-propyne)

KW - Polydivinylbenzene

KW - Precision

UR - http://www.scopus.com/inward/record.url?scp=85115218539&partnerID=8YFLogxK

U2 - 10.1007/s10337-021-04092-1

DO - 10.1007/s10337-021-04092-1

M3 - Article

AN - SCOPUS:85115218539

VL - 84

SP - 1095

EP - 1104

JO - Chromatographia

JF - Chromatographia

SN - 0009-5893

IS - 12

ER -