Solubility determination of surface-active components from dynamic surface tension data

The blood test allows you to give an objective assessment of the state of health of animals and timely identify changes occurring in the body. To assess the content of albumins in the blood serum, the method of measuring the dynamic surface tension on the VRA-1P device, which works according to the method of maximum pressure in the bubble, was used. Based on the results of the measurements, a mathematical model was proposed, and using the regression analysis method, formulas for determining the concentration of albumins were developed, which showed good convergence with other measurement methods.

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Sequential injection analysis with dynamic surface tension detection High throughput analysis of the interfacial properties of surface-active samples

Talanta ◽

10.1016/s0039-9140(03)00022-5 ◽

2003 ◽

Vol 59 (6) ◽

pp. 1153-1163 ◽

Cited By ~ 9

Author(s):

N Lenghor

Keyword(s):

Surface Tension ◽

High Throughput ◽

Interfacial Properties ◽

Dynamic Surface Tension ◽

Sequential Injection Analysis ◽

Sequential Injection ◽

High Throughput Analysis ◽

Dynamic Surface ◽

Throughput Analysis ◽

Surface Active

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A Microfluidic Tensiometer

Fluids Engineering ◽

10.1115/imece2004-62096 ◽

2004 ◽

Author(s):

Hans C. Mayer ◽

Shelley L. Anna

Keyword(s):

Surface Tension ◽

Transport Mechanism ◽

Microfluidic Devices ◽

Dynamic Surface Tension ◽

Two Phase ◽

Surface Tension Data ◽

Dynamic Surface ◽

Theoretical Predictions ◽

Surfactant Transport ◽

Interface Curvature

Recent theoretical predictions indicate that a shift in surfactant transport mechanism from diffusion controlled to kinetically controlled occurs at highly curved interfaces where the length scale is on the same order as feature sizes in microfluidic devices. At present, experimental evidence of this shift in transport mechanism is lacking and this is due to the limitations on degree of interface curvature imposed by traditional methods of surface tension measurement. We show that the measurement of dynamic surface tension is possible at highly curved interfaces using a microfluidic tensiometer that utilizes glass micropipettes to control curvature dimension. Comparison of dynamic surface tension data from our microfluidic tensiometer with data obtained from traditional techniques will validate the theoretical arguments reported, and will improve understanding of two phase flows in microfluidic devices.

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Accurate surface tension and charge determinations from polarographic drop-times

Canadian Journal of Chemistry ◽

10.1139/v67-025 ◽

1967 ◽

Vol 45 (2) ◽

pp. 109-116 ◽

Cited By ~ 30

Author(s):

R. G. Barradas ◽

F. M. Kimmerle

Keyword(s):

Mathematical Method ◽

Surface Tension ◽

Hydrochloric Acid ◽

Potassium Chloride ◽

Precise Determination ◽

Surface Tension Data ◽

Surface Active ◽

Mercury Electrodes ◽

Surface Active Compounds

The precise determination of drop-times for micropolarographic mercury electrodes in aqueous inorganic electrolytes with and without the addition of organic surface-active compounds is described. A dependable mathematical method for conversion of drop-times to accurate surface tension data and the use of IBM computer techniques for the calculation of double layer parameters are discussed. Experimental results for hydrochloric acid, potassium chloride, and furfurylamine systems are reported.

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