F.J. Walker's scientific contributions
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It was automatically created by ResearchGate to create a record of this author's body of work. We create such pages to advance our goal of creating and maintaining the most comprehensive scientific repository possible. In doing so, we process publicly available (personal) data relating to the author as a member of the scientific community.
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Citations
... Colour and spot tests were done by using chemical reagents viz., an aqueous solution of potassium hydroxide (K), aqueous calcium hypochlorite (C), and paraphenylenediamine (P). Lichen secondary metabolites were detected by thin layer chromatography using solvent system A (toluene: 1-4 dioxane: glacial acetic acid in the ratio of 180: 90: 8ml) (Culberson and Kristinsson, 1970;Walker and James, 1980). The demonstration samples are preserved in the facilities of the PDSH division of LWG herbarium. ...
