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Title Transcription
モクザイ ノ pH ニ カンスル ケンキュウ ダイ3ホウ カクシュ モクザイ ノ pH ト オセン ニツイテ
Title Alternative
Studies on the pH Value of Wood(III) : On the pH Values of Various Woods and the Staining
File
language
jpn
Author
Goto, Teruo
Onishi, Hirotsugu
Description
There were measured the pH values of 120 species of Japanese wood, tropical wood and wood-based materials (laimnated wood of Birch and hardboard) and others by using the filtrate which was obtained from the mixture of 3 grs. of wood flour(air-dried condition) and 50 grs. of distilled water, with a pH meter with glass and calomel electrodes.
The list for these pH values were made on the basis of family and genus. (Tables 1, 2 and 3) Greater parts of the examined wood showed weak acidity as clear from the list. Particulary, wood showing from pH 5.0 to 6.0 accounted for 52.7% of all measured wood . (Fig. 1)
In Japanese wood, relatively low pH value was observed in Quercus (PH 4.6-4.9), and Ulmus gave the highest pH value (pH 7.0). (Table 1) Eucalyptus of tropical wood showed relatively low pH value (pH 4.3-4.9). The pH value of Dipterocarpaceae such as Apitong, Red lauan, White lauan and Meranti, was distributed mainly in the range of 5.0 and 6.0. (Table. 2)
In addition, the relation between the pH value of wood and its staining with ferric chloride on cross, radial and tangential sections was investigated. The staining with ferric chloride decreased in cross, radial and tangential section in this order. (Tables 1, 2 and 3) There was relation between the pH value of wood and its staining with ferric chloride in Japanese wood. On the other hand, there was no relation in tropical wood (Fig. 2 and 3) In Japanese wood, the most extensive staining was observed on Quercus, particulary Kashiwa (Q. dentata Thunb.).
Journal Title
島根農科大学研究報告
Volume
15
Start Page
(A-2)80-88
ISSN
05598311
Published Date
1967-01-31
NCID
AN00108241
Publisher
島根農科大学
Publisher Aalternative
The Shimane Agricultural College
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Shimane University
Remark
A,Bを含む
開学十五周年記念号(Commemoration Issue for the 15th Aniversary)
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