【摘要】 <正> 活性炭由于具有多孔结构,比表面积大,吸附能力强,而且其化学性能稳定,机械强度良好,是一种较好的吸附剂。随着工业生产不断发展,活性炭的使用范围越来越广泛。为了更好地利用活性炭,在研究其表面性能的同时,还需要研究其中的杂质成份及其含量。特别是用于医药、食品工业中的活性炭,要求其中杂质含量很严格。但目前尚无简便快速的测定方法。分光光度测定活性炭中的杂质已有报道,但分析时间长,操作麻烦。更多还原

【Abstract】 A procedure for the 2. 5th order differential electroanalytical determination of Fe, Mn and Zn in active carbon has been developed. With H₃BO₃ and NH₃·H₂O（pH=8. 8）as supporting electrolyte, Fe, Mn and Zn give well-defined neopolarograms. The linear calibration curves are obtained in the range of 2×10^-8g/ml to 1×10^-6g/ml. The amounts of Fe, Mn and Zn can be determined by standard addition method. It is found that foreign ele menu in active carbon do not interfere under given conditions, The analytical results are satisfactory.更多还原