Alternativna metoda določanja vsebnosti prostega formaldehida

diplomsko delo (visokošolski strokovni študij)

Andrej Štaleker (Avtor), Leon Oblak (Recenzent), Sergej Medved (Mentor)

Povzetek

Količina prostega formaldehida v lesnih tvorivih se je z leti močno zniževala. Danes uveljavljene in standardizirane metode za določanje prostega formaldehida so zlasti prirejene ivernim ploščam. Obravnavali smo problem merjenja sproščanja prostega formaldehida, ki se pojavi v industriji ivernih plošč. Opisani sta 2 standardizirani metodi (perforator in steklenična metoda) za merjenje prostega formaldehida, ki se sprošča iz surovih ivernih plošč tipa P2. Med prostim formaldehidom, izmerjenim s tema 2 metodama, smo našli dokaj dobro korelacijo s Pearsonovim koeficientom R2 = 0,81. Oba postopka za merjenje vsebnosti prostega formaldehida smo na koncu primerjali še z ekonomske plati in ugotovili, da je steklenična metoda cenejša in zahteva manj dragih aparatur, manj zapletenega dela ter je časovno krajša v primerjavi s perforator metodo.

Ključne besede

prosti formaldehid;iverna plošča;perforator metoda;steklenična metoda;emisije;

Podatki

Jezik:	Slovenski jezik
Leto izida:	2006
Izvor:	Ljubljana
Tipologija:	2.11 - Diplomsko delo
Organizacija:	UL BF - Biotehniška fakulteta
Založnik:	[A. Štaleker]
UDK:	630*862.2
COBISS:	1415305
Št. ogledov:	1553
Št. prenosov:	293
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Alternative method for determination of free formaldehyde contents
Sekundarni povzetek:	In the last years free formaldehyde quantity in wooden materials has immensely decreased. Nowadays established and standardized procedures for determining the free formaldehyde quantity are above all adjusted to the demands of the particleboards. The problem of measuring free formaldehyde release, representing a vital part of the particleboard industry, was researched. 2 standarized procedures of free formaldehyde measuring in raw particleboards of type P2 were described (perforator and flask procedure). A quite favourable correlation with Pearson`s coefficient R2 = 0.81 was obtained between the 2. Both procedures for measuring the free formaldehyde presence were contrasted also from the economic point of view. The comparison shows that the flask method is much cheaper and requires less time-consuming and complicated work. It also demands far less apparatures compared to the perforator method.
Sekundarne ključne besede:	free formaldehyde;particleboard;perforator method;flask method;emmisions;
Vrsta dela (COBISS):	Diplomsko delo
Strani:	X, 35 f., [4 f. pril.]
Ključne besede (UDK):	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:	21008