Simultaneous determination of the amounts of metallic and ?reducible? silver in histologic specimens
- 1 January 1979
- journal article
- research article
- Published by Springer Nature in Histochemistry and Cell Biology
- Vol. 64 (1), 77-86
- https://doi.org/10.1007/bf00493356
Abstract
Acids and weak complexing agents (pK8) can also partially or completely dissolve metallic silver formed under the influence of reducing groups in the tissue. For this reason, the chemical nature of the silver contained in tissue sections, be it metallic or reducible, must not be determined on the basis of solubility tests; moreover, the amount of neither of the two above fractions can be determined by removing the other with any kind of washing. Using radioactive impregnating baths, radioactive silver bound to the tissue as reducible silver can be replaced in a quantitative manner with inactive silver ions by means of a one-hour incubation in 1% inactive silver nitrate dissolved in 10% acetic acid, but the radioactive silver existing in reduced (atomic) state will be left unaffected. Consequently, radioactivity remaining in the tissue after the above treatment represents metallic silver. The amount of reducible silver can be calculated by subtracting that of the metallic silver from the total silver content of the sections.This publication has 11 references indexed in Scilit:
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