Dimensão fractal de ácidos húmicos em diferentes condições experimentais

Química Nova

Alessandro Costa Da Silva²  Eduardo Sá Mendonça²  César Reis¹ 

[1] ,Universidade Federal de Viçosa Departamento de Solos Viçosa MG

关键词: humic acids;    fractals;    turbidimetry;   

DOI  :  10.1590/S0100-40422003000300011

来源: SciELO

【 摘 要 】

The determination of fractal dimension (D) of humic particles was achieved by the turbidimetric technique where diluted suspensions of humic acids, in different experimental conditions, were analyzed by spectrophotometry UV-Vis. The slope of the lines (beta) was taken from the graphics (logtauvs loglambda) to obtain D. The results show 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 decrease of temperature.

【 授权许可】

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