New method of studying the low surface pressures of monolayer at air/water interface

Gaétan Munger; Roger M. Leblanc

doi:10.1063/1.1136300

New method of studying the low surface pressures of monolayer at air/water interface

Gaétan Munger, Roger M. Leblanc

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The determination of the properties of gaseous films at air/water interface requires very special techniques as far as the measurements of the surface pressure are concerned. We have designed an apparatus based upon the characteristics of Langmuir trough. The measuring system consists of a lamp, three optics fibers and two high-gain phototransistors. The surface pressures that have been measured (accurately with great ease) range from 0.0010-0.1500 ± 0.00005 mN m^-1 or ±0.1%. One successful application of the apparatus had been the determination of the molecular weight of proteins such as the bovine serum albumin, egg albumin, bovine rhodopsin, and cytochrome c.

Original language	English (US)
Pages (from-to)	710-714
Number of pages	5
Journal	Review of Scientific Instruments
Volume	51
Issue number	6
DOIs	https://doi.org/10.1063/1.1136300
State	Published - 1980
Externally published	Yes

ASJC Scopus subject areas

Instrumentation

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10.1063/1.1136300

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title = "New method of studying the low surface pressures of monolayer at air/water interface",

abstract = "The determination of the properties of gaseous films at air/water interface requires very special techniques as far as the measurements of the surface pressure are concerned. We have designed an apparatus based upon the characteristics of Langmuir trough. The measuring system consists of a lamp, three optics fibers and two high-gain phototransistors. The surface pressures that have been measured (accurately with great ease) range from 0.0010-0.1500 ± 0.00005 mN m-1 or ±0.1%. One successful application of the apparatus had been the determination of the molecular weight of proteins such as the bovine serum albumin, egg albumin, bovine rhodopsin, and cytochrome c.",

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AB - The determination of the properties of gaseous films at air/water interface requires very special techniques as far as the measurements of the surface pressure are concerned. We have designed an apparatus based upon the characteristics of Langmuir trough. The measuring system consists of a lamp, three optics fibers and two high-gain phototransistors. The surface pressures that have been measured (accurately with great ease) range from 0.0010-0.1500 ± 0.00005 mN m-1 or ±0.1%. One successful application of the apparatus had been the determination of the molecular weight of proteins such as the bovine serum albumin, egg albumin, bovine rhodopsin, and cytochrome c.

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New method of studying the low surface pressures of monolayer at air/water interface

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