论文部分内容阅读
过去一般用以测定鈷的重量法和比色法,以及测定錳的容量法和比色法,其共同的缺点是手續繁复,分析时間长。为了寻求快速的測定方法,我們进行了电位滴定法同时測定鈷和錳的試驗。我們首先采用加料試驗,然后对含鈷的矿物及冶炼中間产物进行測定(例如含錳达30％的鈷土矿nMnO_2·mCoO·PCuO·8H_2O)。电位滴定法同时測定鈷和錳有两个方案:第一个方案是先在含有氟氢化銨的酸性溶液中,用高錳酸鉀先将錳定量地氧化至三价状态,以測定錳;然后
In the past, the gravimetric and colorimetric methods commonly used to determine cobalt, as well as the volumetric and colorimetric methods for the determination of manganese, have the common drawback of complicated procedures and long analysis times. In order to find a rapid method of determination, we conducted a potentiometric titration method for the simultaneous determination of cobalt and manganese. We first use a feed test, followed by the determination of cobalt-bearing minerals and smelting intermediates (eg, 30% manganese ore nMnO 2 · mCoO · PCuO · 8H 2 O). Potentiometric titration of cobalt and manganese at the same time has two solutions. The first solution is to firstly quantitatively oxidize manganese to the trivalent state with potassium permanganate in an acidic solution containing ammonium bifluoride to determine manganese, and then