Three native clays were investigated as emulsifiers for kerosene in water system.The stability of emulsions obtained is considerably effected by the pH value of clay suspension. For every clay studied there is a specific pH value beyond which the emulsions obtained are unstable. For Nanking yellow drab soil the specific value is 5.3,Chuwen red soil 7.0, and Chu-san-den clay 5.0.
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薛家骅,陈明伯.粘土作为乳化剂的研究Ⅰ.粘土悬液的pH值与乳浊液稳定性的关系[J].土壤学报,1963,11(3):312-315. C. H. HSIEH, M. P. CHUNG. STUDIES ON CLAYS AS EMULSIFIERS Ⅰ. pH VALUE OF CLAY SUSPENSION AND STABILITY OF EMULSION[J]. Acta Pedologica Sinica,1963,11(3):312-315.