Vpliv alkilamonijevega klorida na vezavo in učinkovitost bakrovih pripravkov

diplomsko delo (visokošolski strokovni študij)

Mihael Gorše (Author), Marko Petrič (Reviewer), Franc Pohleven (Mentor), Miha Humar (Co-mentor)

Abstract

Za zaščito lesa pogosto uporabljamo zaščitne pripravke na osnovi bakrovih spojin. Bakrovi pripravki so zelo učinkoviti fungicidi. Vendar se Cu iz lesa izpira. V zadnjem času se pojavljajo tolerantni sevi gliv, na katere Cu ne deluje več fungicidno. Zato smo skušali ugotoviti, kako na izpiranje Cu in na fungicidne lastnosti vplivajo kvartarne amonijeve spojine. S pripravki na osnovi bakra, etanolamina, kvartarnih amonijevih spojin, oktanojske kisline in biocida topbor, smo vakuumsko impregnirali vzorce iz smrekovega lesa. Po kondicioniranju in izpiranju smo v izpirku določili delež bakra z atomsko absorpcijsko spektroskopijo. Ugotovili smo, da se je ob prisotnosti amina močno zmanjšalo izpiranje Cu. Fungicidne lastnosti impregniranih vzorcev smo ugotavljali z mini blok metodo. Izprane in neizprane vzorce smo izpostavili delovanju gliv navadne tramovke (Gloeophyllum trabeum), bele hišne gobe (Antrodia vaillantii) in pisane ploskocevke (Trametes versicolor). Ugotovili smo, da izpiranje vzorcev ne poslabša fungicidnih lastnosti zaščitnih pripravkov.

Keywords

zaščita lesa;bakrovi zaščitni pripravki;izpiranje;fungicidne lastnosti;

Data

Language:	Slovenian
Year of publishing:	2005
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[M. Gorše]
UDC:	630*841.1
COBISS:	1296777
Views:	1522
Downloads:	263
Average score:	0 (0 votes)
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Other data

Secondary language:	English
Secondary title:	Influence of alkylammonium chloride on fixation and efficiency of copper based preservatives
Secondary abstract:	Protective preparations on copper based compounds are often use for protection of wood. Copper based preparations are very efficient fungicides, however, Cu from wood leaches out. Recently, tolerant strains of fungi have appeared, against which copper based preservatives are not efficient any more. That is why we tried to find out the influence of quaternary ammonium compounds on leaching of copper based fungicides. Samples from Norway spruce wood were vacuum impregnated with preparations based on copper, ethanolamine, quaternary ammonium compound, octanoic acid and biocide topbor. After drying and leaching we determined concentration of copper in the leachate by atomic absorption spectroscopy. It was found out, that leaching of copper was strongly reduced by the presence of amines. Fungicidal properties of the impregnated samples were determined by the mini block test method. The leached and non-leached samples were exposed to Gloeophyllum trabeum, Antrodia vaillantii and Trametes versicolor. It was found out that leaching did not decrease resistance against wood decay fungi.
Secondary keywords:	wood preservation;copper based preservatives;leaching;fungicidal properties;
File type:	pdf
Type (COBISS):	Undergraduate thesis
Pages:	X, 57 f.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;agriculture and related sciences and techniques;forestry;farming;wildlife exploitation;kmetijstvo ter sorodne vede in tehnologije;forestry;gozdarstvo;forest products and their utilization;gozdni proizvodi in njihova uporaba;
ID:	20944