Mixed Mode S. P. E. of Pollutants in Water on Mechanically Blended Silica-Based Bonded Phases. I. Influence of the Preparation Method
作者:
Z. Hajouj,
J. Thomas,
A.M. Siouffi,
期刊:
Journal of Liquid Chromatography & Related Technologies
(Taylor Available online 1996)
卷期:
Volume 19,
issue 12
页码: 1937-1945
ISSN:1082-6076
年代: 1996
DOI:10.1080/10826079608014017
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Cartridges for Solid-Phase Extraction operating in mixed mode were filled with two phases: C18bonded silica and propylsulfonic acid bonded silica, mechanically blended according to two methods: one dry, the other by suspension in acetonitrile. They were compared with cartridges containing the individual phases, and with a mixed phase having two functionalities bonded onto a common silica particle. The percent recoveries of neutral, basic and acidic environmental pollutants and their reproducibilities were determined by HPLC. After evaluation of the optimum eluent volume, the blended phase prepared without solvent and very rapidly, was overall very promising in terms of retention, reproducibility and composition potential.
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