نتایج جستجو برای: polarographic method
تعداد نتایج: 1631391 فیلتر نتایج به سال:
A polarographic technique was used to demonstrate the rapid restoration by bovine serum albumin of respiratory control to rat liver mitochondria uncoupled with various reagents. Albumin also restored respiratory control to mitochondria isolated from animals treated by injection with an uncoupling reagent and to mitochondria incubated with the reagent prior to the polarographic assay. Albumin wa...
A New and Rapid Method for the Determination of Glucose by Measurement of Rate of Oxygen Consumption
Glucose levels in serum, plasma, and urine are determined rapidly and conveniently by a new glucose oxidase method employing a polarographic oxygen sensor with a circuit modified to record the rate of oxygen consumption. The maximum apparent rate of oxygen consumption relative to the rate obtained with a glucose standard provides a direct measure of the glucose level in the sample; results are ...
The present work deals with the quantitative corrosion determination of carbon steel in hydrochloric acid by use polarographic and weight loss technique.
 peak obtained at (-0.27 v) 0.1 M was used for iron a calibration ranged (10-5–10-3) M.
 To confirm results measurement were carried out, its are good agreement that measurements. research included addition to kinetic study reactions...
Dionýz Ilkovič (Figure 1) was a Czechoslovak physicist and physical chemist. He made fundamental contributions to the theoretical background of polarography electroanalytical chemistry in general. Polarography is first technique that performs voltammetric study with mercury-dropping electrode 2A). This invented 1922 by Czech chemist Jaroslav Heyrovský, who received Nobel prize 1959 for inventio...
a highly sensitive differential pulse polarographic (dpp) method has been developed for the determination of trace amounts of osmium, based on the catalytic effect of osmium (viii) on the oxidation of pyrogallol red (pgr) by sodium bromate at ph 7.00 and 25.0 0.1 ? c. the reaction rate was monitored by measuring the differential pulse cathodic current of the oxidation product of pgr and bromate...
A highly sensitive differential pulse polarographic (DPP) method has been developed for the determination of trace amounts of osmium, based on the catalytic effect of osmium (VIII) on the oxidation of pyrogallol red (PGR) by sodium bromate at pH 7.00 and 25.0 0.1 ? C. The reaction rate was monitored by measuring the differential pulse cathodic current of the oxidation product of PGR and broma...
Adsorption effects in square-wave and d. c. polarography of berberine are investigated in the supporting electrolytes of various pH. Tensametric a. c. and SW polarographic measurements show that both berberine and canadine are strongly adsorbed in the potential range between -0.3 V and --'1.7 V vs. SCE. The reduction of berberine proceeds from the adsorbed state and requires four electrons. The...
the complexation reactions between tl+ and pb2+ ions and crown ethers 12-crown-4(12c4), 15-crown-5 (15c5), benzo-15-crown-5 (b15c5), 18-crown-6 (18c6), dicyclohexyl-18-crown-6 (dc18c6) and aza-18-crown-6 (a18c6) were studied in 90% acetonitrile and 90% ethanol solutions at 25 °c, using an a.c. polarographic technique. the stoichiometry and stability of the complexes were determined by monitorin...
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