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《Journal of Anhui Normal University(Natural Science)》 2009-04
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The Influence of the NaCl Aqueous Solution on the Conductivity and pH Value of the FeSO_4 Microemulsion System

ZHANG Yuan-yuan,WANG Chang-bao,LUO Shi-zhong(College of Chemistry and Materials Science,Anhui Key Laboratory Functional Molecular Solids,Anhui Normal University,Wuhu 241000,China)  
The NaCl aqueous solutions with different concentration were added to microemulsion system consisting of sodium dodecyl sulfate/n-butanol/xylene/aqueous solution(FeSO4).The conductivity and pH value of the microemulsion system were measured at different temperature,the influence of salt effect and temperature was studied.The results showed that,the conductivity of the microemulsion increased with the increasing of salt concentration and temperature,while the pH value decreased with temperature rising.When the NaCl aqueous solution was added to the microemulsion system containing FeSO4,the conductivity of the system was higher than the original one under the conditions of NaCl aqueous concentration was 0.01 mol·L-1 and the temperature was lower than 20 ℃.Between 20-35℃,the NaCl aqueous concentration must reach 0.06 mol·L-1 for obtaining the original conductivity.Above 35℃,the system conductivity was higher than the original one only when the NaCl aqueous concentration was higher than 0.08 mol·L1.
【Fund】: 国家自然科学基金(20704001);; 安徽省自然科学基金(070414191);; 安徽省高等学校青年基金(2007jq1059)
【CateGory Index】: O648.23
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