DC polarographic determination of surfactants

A. Díaz; S. González; A. Arévalo

doi:10.1135/cccc19870609

DC polarographic determination of surfactants

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19870609 ◽

1987 ◽

Vol 52 (3) ◽

pp. 609-615

Author(s):

A. Díaz ◽

S. González ◽

A. Arévalo

Keyword(s):

Quantitative Determination ◽

Polarographic Determination ◽

Method Of Determination

The minimum on the polarographic curves for Bi(III) reduction in HCl solutions occurring when small amounts of surfactants are present can be used for their quantitative determination. The form of the polarograms was examined with respect to the concentration of the surfactant, and the range of concentrations in which the method of determination can be used is discussed.

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Ilościowe oznaczanie skrobi w reakcji z jodem [Quantitative determination of starch in the reaction with iodine]

Acta Agrobotanica ◽

10.5586/aa.1979.005 ◽

2015 ◽

Vol 32 (1) ◽

pp. 39-52

Author(s):

Henryk Marciniak

Keyword(s):

Statistical Analysis ◽

Quantitative Determination ◽

Quantitative Method ◽

Starch Content ◽

Thick Layer ◽

Photometric Measurement ◽

Positive Correlation ◽

Method Of Determination

A quantitative method of determination by photometric measurement in the iodine-starch complex is described. Determinations were made within 0-250 μg range of starch content in 1 ml of solution. Starch was treated with 0.01N J in 1% KJ and extinction was read at wavelength 610 nm in a 1 cm thick layer of solution, with a "Specol" photocolorimeter. Statistical analysis of measurements showed a positive correlation between the starch amount and extinction.

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Polarographic Determination of Antihistamines by Complexation with Cd(II)

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/69.2.192 ◽

1986 ◽

Vol 69 (2) ◽

pp. 192-195 ◽

Cited By ~ 1

Author(s):

Aytekin Temizer ◽

Nuran Özaltin

Keyword(s):

Differential Pulse ◽

Peak Height ◽

Linear Range ◽

Borate Buffer ◽

Ammonium Salts ◽

Polarographic Determination ◽

Polarographic Behavior ◽

Diphenhydramine Hydrochloride ◽

Method Of Determination

Abstract The polarographic behavior of the complexes formed by Cd(II) ion with ethanolamine derivative antihistamines such as diphenhydramine hydrochloride, dimenhydrinate, and chlorphenoxamine hydrochloride was studied. Antihistamines form spontaneous complexes with Cd(II) ion in the presence of KNO3. In addition, pH 8.00 borate buffer was added to increase the differential pulse polarogram peak height, and tetraalkyl ammonium salts were added to increase the linear range. The method of determination developed has been applied to commercial tablet, capsule, elixir, and injection forms of ethanolamine derivative drugs and has been compared with official methods.

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Urokinase Excretion in Man: A Method of Determination and Consideration of its Significance

Thrombosis and Haemostasis ◽

10.1055/s-0038-1654917 ◽

1961 ◽

Vol 05 (02) ◽

pp. 162-178 ◽

Cited By ~ 10

Author(s):

Kurt N. von Kaulla ◽

Neil Riggenbach

Keyword(s):

Quantitative Determination ◽

Plasminogen Activator ◽

Proteolytic Activity ◽

Human Urine ◽

Plasminogen Activation ◽

Simple Method ◽

Method Of Determination ◽

Males And Females

SummaryA simple method is described for the quantitative determination of urokinase, a plasminogen activator, in human urine. Plasminogen activation by urokinase and the measurement of the proteolytic activity of the formed plasmin are separated in two individual steps. The normal urokinase excretion values for males and females in various conditions are discussed. Examples of pathological excretion patterns are also given.

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