Topic
Polarography
About: Polarography is a research topic. Over the lifetime, 4772 publications have been published within this topic receiving 75478 citations.
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46 citations
46 citations
TL;DR: In this paper, the effect of water as an impurity in the electrolyte is less severe than that of oxygen but at high concentrations water too inhibits the dissolution of magnesium, which is further severely retarded by insoluble material formed in the reaction of magnesium ions with the reduction products of molecular oxygen.
46 citations
TL;DR: In this paper, a single sweep voltammetry (measurement of the time integral of the reduction peak of adenine) and phase sensitive a.c. polarography (course of the capacitive current) at a hanging mercury drop electrode was performed at the charged mercury|solution interface.
46 citations
TL;DR: A polarographic method has been developed for the determination of formaldehyde in workplace air using midget fritted glass bubblers containing an aqueous solution of 10% methanol to form a formaldehyde hydrazone compound.
Abstract: A polarographic method has been developed for the determination of formaldehyde in workplace air. Samples are collected in midget fritted glass bubblers containing an aqueous solution of 10% methanol. The collected formaldehyde in the absorbent solution is derivatized with hydrazine reagent to form a formaldehyde hydrazone compound. An aliquot of the resulting solution is analyzed by differential pulse polarography at a dropping mercury electrode. The sample generation system, impinger collection, polarographic analysis, and precision and accuracy data are described. The method was validated over the range of 5.8 to 17.7 mg/cu m, which corresponds to 0.5 to 2 times the (peak) OSHA-PEL for a 30-liter sample at a flow rate of 1 Lpm. The average recovery was 103%. The pooled coefficient of variation or relative standard deviation was 0.08.
46 citations