Author
Fritz Feigl
Bio: Fritz Feigl is an academic researcher from Ministry of Agriculture. The author has contributed to research in topics: Spot analysis & Cyanide. The author has an hindex of 11, co-authored 89 publications receiving 704 citations.
Topics: Spot analysis, Cyanide, Reagent, Nitrous acid, Acetic acid
Papers published on a yearly basis
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TL;DR: In this paper, a new test for copper was developed based on the formation of a blue acid-resistant inner complex salt of copper with the dye alizarin blue, which is more sensitive than all other copper tests hitherto employed, including tests based on catalytic action of copper ions.
11 citations
TL;DR: In Form einer Tupfelreaktion lassen sich durch die Fluoreszenzreaktions 0,1γ Hydrazin neben 5000γ Hydroxylamin nachweisen.
Abstract: Bei Kontakt von Salicylaldehyddampf mit essigsaurer, acetatgepufferter Hydrazinlosung entsteht gelb fluoreszierendes Salicylaldazin. In Form einer Tupfelreaktion lassen sich durch die Fluoreszenzreaktion 0,1γ Hydrazin neben 5000γ Hydroxylamin nachweisen.
10 citations
10 citations
10 citations
TL;DR: The pyrolytic splitting off of thiocyanic acid is not specific for cyanides because this product also results with compounds which have a C=N group as mentioned in this paper.
Abstract: Studies of the pyrolytic behavior of cyanides (nitriles) have shown:
1.
When aromatic and aliphatic cyanides (nitriles) are pyrolysed in the presence of sulfur, they split off thiocyanic acid.
2.
Aliphatic cyanides yield hydrogen cyanide when the dry mixture with calcium oxide or carbonate is heated to 150°.
3.
The detection of the thiocyanic acid or hydrogen cyanide produced in 1. and 2. forms the basis of new tests for cyanides.
4.
The pyrolytic splitting off of thiocyanic acid is not specific for cyanides because this product also results with compounds which have a C=N group.
5.
The test for aliphatic cyanides is specific.
9 citations
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270 citations
TL;DR: Colloidal silver nanoparticles synthesized by reacting aqueous AgNO(3) with Medicago sativa seed exudates under non-photomediated conditions were effective anti-bacterial agents and nanoplates are notably smaller and better faceted compared with those synthesizing by vascular plant extracts previously reported.
258 citations