Evaluation of the distribution of water in wood by use of three dimensional proton NMR volume imaging

Autor:	Vasanthan Rajanayagam, Laurance D. Hall
Rok vydání:	1986
Předmět:	Work (thermodynamics) Chemistry Analytical chemistry food and beverages Mineralogy Forestry Plant Science Industrial and Manufacturing Engineering Signal level Volume (thermodynamics) Reagent Proton NMR General Materials Science Volume concentration
Zdroj:	Wood Science and Technology. 20:329-333
ISSN:	1432-5225 0043-7719
DOI:	10.1007/bf00351585
Popis:	This work confirms that there is sufficient water in wet wood to provide an adequate signal level for detection by NMR-imaging; furthermore, its natural line-width is sufficiently small that these experiments can be performed with modest levels of the imaging gradients. Second, it is clear that this water is sufficiently accessible to chemical reagents introduced from the outer surface of the wood, that the location of such reagents can be established by the perturbations they induce in the properties of the wood-water itself. In this regard, the water is acting effectively as a “molecular amplifier” for the reagent; as a result, the effect of low concentrations of, for example, fungicides, bacteriostatic reagents and other preservatives can easily be followed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b91512410e7d2ac9975386478b0b1c7a https://doi.org/10.1007/bf00351585 Zobrazit plný text záznamu Full text from SpringerLink