Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Vapor pressure
Patent
1986-03-13
1987-03-03
Levy, Stewart J.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Vapor pressure
G01N 1302
Patent
active
046465626
ABSTRACT:
A method and apparatus for continuous monitoring of the relative dynamic surface activity of a liquid in which the surface activity can be rapidly changing is disclosed. The liquid is flowed through an orifice at a constant volume flow rate to produce liquid drops. The time intervals between successive drops from the orifice are measured. Variations in the time intervals of pairs of two successive drops provide an indication of the volume of the second drop of each pair and thus provide an indication of the relative dynamic surface activity of the second drop. The measured time intervals are converted into electrical signals which are representative of the respective measured time intervals. The method and apparatus can be applied to liquid chromatography separations to continuously and quickly provide information about surface active components of the liquid and is especially applicable when only a small volume of the sample liquid is available. The method and apparatus can also be applied to industrial process monitoring and to use as a general laboratory instrument or method.
REFERENCES:
patent: 2473553 (1949-06-01), Stokes
patent: 3096642 (1963-07-01), Peterson
patent: 3913385 (1975-10-01), Jobe
patent: 4228677 (1980-10-01), Olsson
patent: 4361032 (1982-11-01), Lessnig
patent: 4416148 (1983-11-01), Klus et al.
Pilz, et al., Automatic Monitor for Surfactants in Aviation Turbine Fuel, Analytical Chemistry, vol. 43, No. 4, Apr. 1971.
A Surfactant Bee Venom Fraction: Separation on a Newly Devised Constant-Flow-Rate Chromatographic Column and Detection by Changes in Effluent Drop Volume, W. H. Shipman et al., U.S. Naval Radiological Defense Laboratory, dated Jul. 21, 1968.
Automated Drop Volume Apparatus for Surface Tension Measurement, E. L. Rowe, Journal of Pharmaceutical Science, vol. 61, No. 5, pp. 781-782, (1972).
Drop Weight Variation in an Automated Collection Procedure and its Relationship to Apparent Surface Tension, T. Exner et al., Bio-Chimica et Biophysica Acta, vol. 428, pp. 772-778, (1976).
An Automated Drop Weight Method Using a Drop-Counter-Regulated Fraction Collector for Measuring Surface Tension, T. Exner et al., Science Tools, vol. 23, No. 1, pp. 1-3, (1976).
A Surface Tension Apparatus According to the Drop Volume Principle, Journal of Colloid and Interface Science, vol. 60, No. 1, Jun. 1, 1977.
Pulse Duration Receiver Sales Literature Published by Moore Industries Incorporated.
Levy Stewart J.
Miller Brewing Company
Roskos Joseph W.
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