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以钙离子电极和水硬度电极(均为江苏电分析仪器厂产品)指示,标准加入法测定磁性碳酸锰中的钙、镁。方法原理是用过氧化氢将二价锰氧化成MnO(OH)_2沉淀,除去主要成分锰,用钙离子测定钙,再用硬度电极测得钙镁合量,二者之差即为镁量。方法较简单,测定结果与原子吸收法的接近。准确称取样品2克于150毫升烧杯中,用1:1盐酸溶解(加入的盐酸量应为全溶的
With calcium ion electrode and water hardness electrode (both Jiangsu electrical analyzer products) instructions, the standard method for the determination of manganese carbonate in the magnetic manganese. The principle of the method is that the divalent manganese is oxidized into the precipitate of MnO (OH) 2 by hydrogen peroxide, the main component of manganese is removed, the calcium is measured by calcium ion, and the amount of calcium and magnesium is measured by the hardness electrode, the difference between the two is the amount of magnesium . The method is simpler and the results are close to those obtained by atomic absorption spectrometry. Accurately weigh 2 grams of sample in a 150 ml beaker and dissolve with 1: 1 hydrochloric acid (the amount of hydrochloric acid added should be fully soluble