Effect of Organic Modifier on the Retention of Low-Molecular-Weight Organic Compounds in Low-Temperature HPLC Using a Liquid CO<sub>2</sub> Mobile Phase and an Octadecyl Stationary Phase

Abstract In a previous communication it was reported that certain polymers could be separated from mineral oil by a liquid chromatographic method. n-Heptane was used as the mobile phase and small pieces of thin vulcanized natural latex as the stationary phase. It has now been found that compounds of lower molecular weight can also be separated by this method. The use of rubber for the separation of compounds of low molecular weight was first described by Boldingh; he found it advantageous first to swell the rubber with a different solvent from that used as the mobile phase. The use of a crosslinked dextran (“Sephadex”) for separating compounds in aqueous solution has been described by Gelotte. Vaughan has mentioned the possibility of using crosslinked polystyrene beads for this purpose.

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Phase-partitioning and chemical reactions of low molecular weight organic compounds in fog

Tellus B ◽

10.3402/tellusb.v44i5.15566 ◽

1992 ◽

Vol 44 (5) ◽

pp. 533-544 ◽

Cited By ~ 22

Author(s):

M. C. Facchini ◽

S. Fuzzi ◽

J. A. Lind ◽

H. Fierlinger-Oberlinninger ◽

M. Kalina ◽

...

Keyword(s):

Molecular Weight ◽

Organic Compounds ◽

Chemical Reactions ◽

Low Molecular Weight ◽

Phase Partitioning

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Persistent Free Radicals from Low-Molecular-Weight Organic Compounds Enhance Cross-Coupling Reactions and Toxicity of Anthracene on Amorphous Silica Surfaces under Light

Environmental Science & Technology ◽

10.1021/acs.est.0c07472 ◽

2021 ◽

Vol 55 (6) ◽

pp. 3716-3726

Author(s):

Zhaoyue Sun ◽

Xinghao Wang ◽

Cun Liu ◽

Guodong Fang ◽

Longgang Chu ◽

...

Keyword(s):

Molecular Weight ◽

Free Radicals ◽

Organic Compounds ◽

Amorphous Silica ◽

Cross Coupling ◽

Low Molecular Weight ◽

Coupling Reactions ◽

Silica Surfaces ◽

Cross Coupling Reactions

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Influence of low-molecular-weight copolymers of ethylene with vinyl acetate on the low-temperature properties of diesel fuel

Chemistry and Technology of Fuels and Oils ◽

10.1007/bf00726373 ◽

1974 ◽

Vol 10 (8) ◽

pp. 615-618 ◽

Cited By ~ 2

Author(s):

G. G. Krasnyanskaya ◽

B. V. Gryaznov ◽

V. A. Kryunina ◽

S. L. Lyubimova ◽

V. N. Monastyrskii ◽

...

Keyword(s):

Molecular Weight ◽

Low Temperature ◽

Vinyl Acetate ◽

Diesel Fuel ◽

Low Molecular Weight

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A ligand-receptor model for the cohesive behaviour of Dictyostelium discoideum axenic cells

Journal of Cell Science ◽

10.1242/jcs.37.1.157 ◽

1979 ◽

Vol 37 (1) ◽

pp. 157-167

Author(s):

A.R. Jaffe ◽

A.P. Swan ◽

D.R. Garrod

Keyword(s):

Molecular Weight ◽

Stationary Phase ◽

Chelating Agent ◽

Cell Types ◽

Low Molecular Weight ◽

Receptor Model ◽

Phase Growth ◽

Developmentally Regulated ◽

Receptor System ◽

Contact Sites

Axenically grown cells of D. discoideum Ax-2 harvested in the log phase of growth, cohere rapidly when shaken in phosphate buffer. After 3.5 days in the stationary phase of growth, cells become completely non-cohesive. Although they do not stick to each other, stationary phase cells do stick to both log phase cells and aggregation-competent cells. The cohesion of stationary phase cells with these other 2 cell types is inhibited by both EDTA and the low-molecular-weight factor which we have previously demonstrated in stationary-phase growth medium. There is a decline in the sensitivity of slime mould cell cohesion to the low-molecular-weight inhibitory factor as the cells become aggregation-competent. This effect parallels the developmentally-regulated decline in sensitivity to EDTA. The low-molecular-weight inhibitor is not a chelating agent, however. The effect of the inhibitor seems to be specifically against contact sites-B mediated cohesion. We suggest that the simplest cohesive mechanism which can explain our results, is that the EDTA-sensitive cohesion of log phase cells could be dependent on a ligand-receptor system.

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