【求助】（还剩第1篇）求助 英文文献两篇

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谢谢，第一篇不知道是不是不好查

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Bibliographic Information

High-performance liquid chromatography with porous silica microspheres. Kirkland, J. J.. Exp. Stn., E. I. du Pont de Nemours and Co., Wilmington, DE, USA. Journal of Chromatographic Science (1972), 10(10), 593-9. CODEN: JCHSBZ ISSN: 0021-9665. Journal written in English. CAN 79:87183 AN 1973:487183 CAPLUS

Abstract

New totally porous, spherical silica particles of <10 .mu. are superior column packings for high-performance liq. chromatog. ($$lc). These porous microspheres are prepd. in narrow particle size ranges and have been used for liq.-liq., liq.-solid and exclusion chromatog. since both the overall size and internal porosity can be selected and closely controlled. Highly efficient columns of these particles are conveniently prepd. by a high-pressure slurry-packing technique by using stabilized aq. suspensions. Performance of columns of these microspheres are the highest yet reported, with 5-6 .mu. particles producing 23 effective plates/sec for solutes with capacity factors, k' = 12. The performance of the microsphere columns is >1000 times that of classical $$lc systems and equals that of open tubular (capillary) gc columns.

Indexing -- Section 80-4 (Organic Analytical Chemistry)
Section cross-reference(s): 66

Chromatography, column and liquid
(high-performance, porous silica microspheres as column packings for)

7631-86-9, uses and miscellaneous
Role: ANST (Analytical study); USES (Uses)
(porous microspheres, as adsorbent for high-performance liq. chromatog.)

Supplementary Terms

chromatog porous silica microsphere column

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