一、引言应用滴汞电极的普通极譜測定浓度为10~(-5)M的离子已經不很容易了,如果浓度再低,由于充电电流可以和电解电流相比拟,很难精确地测量波高。因此,近年來在极譜分析中出現了应用靜汞电极的阳极溶出法。滕永等已詳細介紹了其历史发展。該方法在于,待測杂貭預先在电极上沉积富集,然后在很短的时間內 I. INTRODUCTION It is not easy to determine the ion concentration of 10-5M by using the common polarography of drop mercury electrode. If the concentration is lower, it is very difficult to accurately measure the wave height because the charging current can be compared with the electrolysis current . Therefore, in recent years, polarographic analysis has appeared using the static mercury electrode anodic stripping method. Teng et al. Have described in detail their historical development. The method is that the impurity to be tested is pre-deposited on the electrode and enriched, and then in a very short period of time