Fractal dimension of humic acids in differents experimental condition

Quimica nova

Reis, César¹  Mendonça, Eduardo Sá¹  Silva, Alessandro Costa da¹ 

[1] Universidade Federal de Viçosa, Viçosa

关键词: humic acids;    fractals;    turbidimetry.;   

DOI  :  10.1590/S0100-40422003000300011

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The determinationof fractal dimension (D) of humic particles was achieved by the turbidimetrictechnique where diluted suspensions of humic acids, in different experimentalconditions, were analyzed by spectrophotometry UV-Vis. The slope of the lines(b) was taken from the graphics (logt vs logl) to obtain D. The resultsshow that the values of D changed according to pH (3.0, 5.0 and 7.0), temperature(25 and 5 oC) and shaking (magnetic and horizontal). In general,the value of D decreased with the increment of pH, increase of shaking and decreaseof temperature.

【 授权许可】

CC BY