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

G. Munger, Roger Leblanc

Research output: Contribution to journalArticle

5 Citations (Scopus)

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 languageEnglish
Pages (from-to)710-714
Number of pages5
JournalReview of Scientific Instruments
Volume51
Issue number6
DOIs
StatePublished - Dec 1 1980
Externally publishedYes

Fingerprint

Monolayers
Phototransistors
Proteins
air
Air
albumins
Electric lamps
water
Fiber optics
Water
Molecular weight
phototransistors
cytochromes
eggs
high gain
troughs
serums
luminaires
fiber optics
molecular weight

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Instrumentation

Cite this

New method of studying the low surface pressures of monolayer at air/water interface. / Munger, G.; Leblanc, Roger.

In: Review of Scientific Instruments, Vol. 51, No. 6, 01.12.1980, p. 710-714.

Research output: Contribution to journalArticle

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