摘要
测定了国产21种竹材基、中、梢三部分的pH值和缓冲容量。结果表明,21种竹材的pH值为4.80～6.66,平均值为5.698,其中12种散生竹在5.42—6.66之间,9种丛生竹在4.80—5.72之间;同竹种不同部位的pH值有变异,散生竹的大部分是基部较梢部为大,而丛生竹的大部分却是梢部较基部为大;12种散生竹材的碱缓冲容量为0.1522～0.5568 meq,9种丛生竹材的为0.0919～0.2534meq,变化范围较散生竹材为小。
Having analysed the pH value and buffer capacity in 21 species of bamboo material each included the base, the middle and the top part of the culms, the tests showed that the pH values of the above-mentioned materials are between 4.80-6.66, the average value is 5.698. Among them, those of the bamboos with dispersive culms (12 species) are between 5.42—6.66; those of the bamboos with caespitose culms (9species) are between 4.80—5.72. In the same bamboo species, different part of the culm has different pH value. To the dispersive bamboos, pH value in base part is higher than in top part, but to the caespitose one, pH value in top part is higher than in base part. The allkali buffer capacities in the 12 species of dispersive bamboo are between 0.15228—0.5568 meq, Whereas, in the 9 species of caespitose bamboo, with a smaller variation range, the buffer capacities are between 0.0919—0.2534 meq.
出处
《竹子研究汇刊》
北大核心
1991年第2期1-7,共7页
Journal of Bamboo Research
关键词
竹材
PH值
缓冲容量
bamboo material
pH value
buffer capacity
