Author
Fritz Feigl
Bio: Fritz Feigl is an academic researcher from University of Vienna. The author has contributed to research in topics: Spot analysis & Benzoin. The author has an hindex of 9, co-authored 20 publications receiving 2314 citations.
Topics: Spot analysis, Benzoin, Cyanide, Isomerization, Oxamide
Papers
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01 Jan 1956
TL;DR: Inorganic spot test analysis has been extensively studied in the literature, see as discussed by the authors for a survey of the current state and prospects of inorganic inorganic spot-test analysis, including preliminary orientational tests for the elements, their ions and compounds.
Abstract: Development, present state and prospects of inorganic spot test analysis. Methodology of spot test analysis (completely revised and enlarged by Dr. G. Skalos). Preliminary orientational tests. Tests for the elements, their ions and compounds. Application of spot reactions in tests of purity, examination of technical materials, studies of minerals. Tabular summary.
1,663 citations
28 citations
TL;DR: Tetrabromphenolphthaleinathylester bzw. das Alkalisalz des Esters eignen sich zum Nachweis vonnativem Eiweis mit Hilfe einer Tupfelreaktion as discussed by the authors.
Abstract: Tetrabromphenolphthaleinathylester bzw. das Alkalisalz des Esters eignen sich zum Nachweis vonnativem Eiweis mit Hilfe einer Tupfelreaktion. Es entstehen blaue Verbindungen, die gegen verdunnte Essigsaure bestandig sind. Es ist wahrscheinlich, das der Nachweis auf der Auswertung eines Proteinfehlers beiph-Indikatoren beruht.
17 citations
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TL;DR: Microfluidic paper-based analytical devices are a new class of point-of-care diagnostic devices that are inexpensive, easy to use, and designed specifically for use in developing countries.
Abstract: Microfluidic paper-based analytical devices (μPADs) are a new class of point-of-care diagnostic devices that are inexpensive, easy to use, and designed specifically for use in developing countries. (To listen to a podcast about this feature, please go to the Analytical Chemistry multimedia page at pubs.acs.org/page/ancham/audio/index.html.)
2,373 citations
TL;DR: This paper reviews recent advances in the covalent attachment of bioactive compounds to functionalized polymer surfaces including relevant techniques in polymer surface modification such as wet chemical, organosilanization, ionized gas treatments, and UV irradiation.
1,334 citations
1,062 citations
TL;DR: Thin-Layer Chromatography as an Analytical Tool as a Preparative Tool and Qualitative Analysis for Quantitative Analysis.
Abstract: Technique
Thin-Layer Chromatography as an Analytical Tool
Qualitative Analysis
Quantitative Analysis
Thin-Layer Chromatography as a Preparative Tool
874 citations
TL;DR: Chemical analyses of ancient organics absorbed into pottery jars from the early Neolithic village of Jiahu in Henan province in China have revealed that a mixed fermented beverage of rice, honey, and fruit was being produced as early as the seventh millennium before Christ.
Abstract: Chemical analyses of ancient organics absorbed into pottery jars from the early Neolithic village of Jiahu in Henan province in China have revealed that a mixed fermented beverage of rice, honey, and fruit (hawthorn fruit and/or grape) was being produced as early as the seventh millennium before Christ (B.C.). This prehistoric drink paved the way for unique cereal beverages of the proto-historic second millennium B.C., remarkably preserved as liquids inside sealed bronze vessels of the Shang and Western Zhou Dynasties. These findings provide direct evidence for fermented beverages in ancient Chinese culture, which were of considerable social, religious, and medical significance, and help elucidate their earliest descriptions in the Shang Dynasty oracle inscriptions.
775 citations