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全固态锌离子选择性电极的制备与表征 被引量:6
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作者 崔光文 何润合 +2 位作者 药健 王建平 张兴祥 《分析化学》 SCIE EI CAS CSCD 北大核心 2018年第10期1669-1676,共8页
锌是人体不可缺少的微量元素,锌的摄入量会影响人的身体健康。因此对食物、药品及环境水样中Zn^(2+)含量的准确检测十分必要。本研究将包含ZnCl_2溶液的聚吡咯微胶囊涂敷于玻碳电极与Zn^(2+)选择膜之间,作为固接传感层,制得以聚吡咯微... 锌是人体不可缺少的微量元素,锌的摄入量会影响人的身体健康。因此对食物、药品及环境水样中Zn^(2+)含量的准确检测十分必要。本研究将包含ZnCl_2溶液的聚吡咯微胶囊涂敷于玻碳电极与Zn^(2+)选择膜之间,作为固接传感层,制得以聚吡咯微胶囊为中间层的全固态Zn^(2+)选择性膜电极(GC/PPy微胶囊/Zn^(2+)-ISE),以循环伏安法、交流阻抗谱等对电极性能进行了研究。结果表明,聚吡咯微胶囊作为固接传感层,可以明显地提高电极的电容,降低电极的电荷转移阻抗,使电极能有效进行离子电子之间信号的转换。电极的线性响应范围为1×10^(-5)~1.0×10^(-1)mol/L,检出限为2.45×10^(-6)mol/L。以聚吡咯为中间层的电极具有良好的再现性和稳定性。 展开更多
关键词 聚吡咯微胶囊 锌离子选择性电极 全固态选择性电极 离子检测
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Effects of High-Power Ultrasonic Treatment on the Slurryability of Coals 被引量:2
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作者 cui guang-wen ZHU Shu-quan +1 位作者 ZOU Li-zhuang XIE Wei-wei 《Journal of China University of Mining and Technology》 EI 2007年第4期562-565,共4页
To improve slurryability,high power ultrasonic energy was used to treat coal slurry. The influence of power on the slurryability of raw coals and on the maximum hydro-content (MHC) was investigated by measuring the ap... To improve slurryability,high power ultrasonic energy was used to treat coal slurry. The influence of power on the slurryability of raw coals and on the maximum hydro-content (MHC) was investigated by measuring the apparent viscosity before and after treatment. The experimental results show that the effect of treatment on sluryability is different for different rank coals under the same treatment conditions. The coals metamorphosed to lower degree are more sensitive to the ultrasonic treatment. The apparent viscosity of slurries from coal metamorphosed to medium degree clearly decreases after the ultrasonic treatment. The ultrasonic treatment makes MHC decrease,which improves the slurryability. For Shenmu or Hebi coal slurry after 3 min. treatment the maximum fixed-viscosity concentration is increased by about 0.4% and 0.3%,respectively,when the ultrasonic power is 100 W. The maximum fixed-viscosity concentration increased 2.4% and 1.7%,respectively,when the ultrasonic power was 300 W,but it decreased by about 0.4% and 0.7%,respectively,when the power was 500 W. 展开更多
关键词 water slurry SLURRYABILITY ultrasonic wave VISCOSITY
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