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Abstract�� A wetted column was used to measure the rate of absorption of carbon dioxide in aqueous polymer solutions.The experimental results showed that the exactitude in diffusivity calculation by Higbie��s penetration theory can be ensured when dimensionless contact time t<0.1.

Keywords�� s:diffusivity;exactitude;penetration theory;dimensionless contact time

Received 1995-04-15;

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��Ӣũ.��͸�۲ⶨ��ɢϵ��ľ�ȷ��[J]. ��ѧ��ҵ�빤��, 1995,12(2): 46-48

Xu Yingnong.A Study of Exactitude in Diffusivity Measurements by Higbie��s Penetration Theory[J]. Chemcial Industry and Engineering, 1995,12(2): 46-48