Topic
Potassium dichromate
About: Potassium dichromate is a research topic. Over the lifetime, 1430 publications have been published within this topic receiving 18967 citations. The topic is also known as: Potassium dichromate(VI) & Chromium potassium oxide.
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TL;DR: In this paper, two common quantitative analysis methods on ethanol content, including gas chromatograpy (GC) method and potassium dichromate colorimetric method, are compared when they are applied to analyze the standard solution with certain ethanol concentration and fermentation liquor with unknown ethanol concentration.
Abstract: Two common quantitative analysis methods on ethanol content,including gas chromatograpy(GC) method and potassium dichromate colorimetric method,are compared when they are applied to analyze the standard solution with certain ethanol concentration and fermentation liquor with unknown ethanol concentration.The analysis results show the GC method is more accurate and comes up with higher cost in quantitatively analyzing the ethanol concentration of fermentation liquor;and that the potassium dichromate colorimetric method can be applied as a cheaper alternative method to GC method in batch quantity analysis on ethanol contents of fermentation liquors.
2 citations
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TL;DR: Two preservatives; zinc polyvinyl alcohol (zinc PVA) and potassium dichromate solutions for preservation of microsporidian spores separated from human faecal samples revealed that morphological features, staining characters and viability of the spores were maintained in both solutions throughout the study period.
Abstract: Microsporidia are emerging opportunistic parasites. Preservation of the biological properties of microsporidian spores is often required in research work. The present study compared two preservatives; zinc polyvinyl alcohol (zinc PVA) and potassium dichromate solutions for preservation of microsporidian spores separated from human faecal samples. After 0, 1, 2 and 4 months of storage, morphological features and staining characters of the spores were assessed by light microscopy in modified trichrome-stained smears and their viability percentages were calculated using acridine orange/ethidium bromide mixture. Also, spore infectivity was evaluated by faecal spore shedding and intestinal spore load in mice orally inoculated with the preserved spores. Results revealed that morphological features, staining characters and viability of the spores were maintained in both solutions throughout the study period. Spore infectivity was completely preserved in zinc PVA solution but showed significant reduction in potassium dichromate solution at the fourth month of the preservation duration.
2 citations
01 Jan 2013
2 citations
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29 Jun 2005
TL;DR: In this article, a method for preparing an anti-fog agent for glass, using polyvinyl alcohol (PVA) as the raw material, by modifying and adding load to the make the anti fog agent with outstanding effect.
Abstract: The invention relates to a method for preparing an anti-fog agent for glass, using polyvinyl alcohol (PVA) as the raw material, by modifying and adding load to the make the anti-fog agent with outstanding effect. Dissolve polyvinyl alcohol (PVA) in hot water to be the indoor temperature and add into isopropyl alcohol (muriatic acid and formaldehyde), agitate for 4h and add into potassium dichromate (ethylsilicate, gama- KH560, muriatic acid), agitate for 8h to make A solution; mix potassium dichromate (ethylsilicate, gama- KH560, muriatic acid) and alcohol by a certain volume, back flow for 6h in 60deg.C to make B solution; place an and B solution for 14days, add B solution into A solution while agitate it, generating anti-fog agent for glass of C solution. The anti-fog agent for glass made by the invention has stable performance, good effect of fog resistance, safety, no pollution, no harm and low cost.
2 citations
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2 citations