✦ LIBER ✦

Investigation of the low temperature effect in normal phase micro high performance liquid chromatography

✍ Scribed by Jinno, Kiyokatsu ;Hirata, Yokio

Publisher: John Wiley and Sons
Year: 1982
Tongue: English
Weight: 435 KB
Volume: 5
Category: Article
ISSN: 0935-6304
DOI: 10.1002/jhrc.1240050205

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The low temperature effect has been investigated on a set of three different silica‐gel micro columns with FC‐78 as eluent. An open tubular micro glass capillary, a packed micro glass capillary, and a packed micro teflon column were examined. Temperature dependences of separation factors and theoretical plate numbers were determined. It appears that a decrease in column temperature improves chromatographic selectivity while column efficiency decreases. The compensation temperatures were determined for these systems. The results suggest that the retention mechanism operative in the low temperature range is almost the same as that in the normal temperature range. However, the mechanism differs from that of reversed phase systems.

📜 SIMILAR VOLUMES

Investigation of the low temperature eff

Investigation of the low temperature effect in reversed phase micro high performance liquid chromatography

✍ Jinno, K. ;Ohshima, T. ;Hirata, Y. 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 276 KB 👁 1 views

## Abstract The low temperature effect has been investigated in reversed phase micro high performance liquid chromatography with various aqueous mobile phase systems by an approach based on enthalpy‐entropy compensation. The compensation temperatures, Tc, were determined for these systems, and the

Investigation of the low temperature eff

Investigation of the low temperature effect in micro high performance liquid chromatography-open tubular microcapillary column

✍ Jinno, K. ;Hirata, Y. 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 229 KB 👁 1 views

The experimental results are represented in Figure 1 ; as in ref. [5], the log k'and Csaxes have opposite directions. Although only few values of solubility are available, the variations of log kvalues and log CS values of 2-hydroxynaphthalenc? are clearly seen to be parallel; some deviations are

Role of column temperature in micro high

Role of column temperature in micro high performance liquid chromatography

✍ Takeuchi, Toyohide ;Watanabe, Youichi ;Ishii, Daido 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 221 KB 👁 1 views

Improved separation with a low temperatu

Improved separation with a low temperature column in micro high performance liquid chromatography

✍ Jinno, K. ;Nomura, H. ;Hirata, Y. 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 English ⚖ 135 KB 👁 1 views

Chromatographic performance of deuterate

Chromatographic performance of deuterated solvents in reversed phase micro high performance liquid chromatography

✍ Jinno, K. 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 252 KB 👁 1 views

The chromatographic performance of the deuterated solvents, CD30D and D20, has been investigated in reversed-phase micro high performance liquid chromatography. The chrornatographic performanceof CD30D is only slightlysuperior to that of CH30H. However, the performance of D20 is significantly superi

Effects of the stationary phase in on-co

Effects of the stationary phase in on-column fluorometric detection in micro high-performance liquid chromatography

✍ Takeuchi, T. ;Ishii, D. 📂 Article 📅 1988 🏛 John Wiley and Sons 🌐 English ⚖ 267 KB 👁 1 views

repeated runs on one single capillary column. This is illustrated in the analysisofa realsample (Figure I), onacapillarycolumnwhich had taken more than 50 samples.The quantitative resultobtained, 7 ppm of Arochlor 1260, was confirmed by official Government Laboratories. ## Figure 1 Waste oil cont