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间氯偶氮安替比林是一种对钙灵敏的新显色剂。本文在文献基础上,进一步研究了钙与间氯偶氮安替比林的显色反应,确定可在两个不同灵敏度的波长下进行测定,配以合适的溶样方法和混合掩蔽剂,拟订了不经分离快速测定岩矿中钙的方法。实验部分 (一)主要仪器和试剂 721型分光光度计。间氯偶氮安替比林水溶液:0.04％;0.1％。钙标准溶液:称取经110℃烘干的光谱纯碳酸钙0.6250g于50ml烧杯中,以少量水润湿后,加入10ml 3mol·L~(-1)盐酸(G.R)使之溶解,并煮沸逐去二氧化碳。冷却后转移到
Metazo-antipyrine is a new color-sensitive reagent for calcium. Based on the literature, we further studied the color reaction between calcium and anti-clozapin antipyrine. The determination can be carried out at two wavelengths with different sensitivities, with suitable sample-dissolving methods and mixed masking agents Rapid determination of calcium in rock and ore without separation. Experimental part (A) of the main instruments and reagents 721 spectrophotometer. Chloroantipyrine antipyrine aqueous solution: 0.04%; 0.1%. Calcium standard solution: Weigh 0.6250g of pure calcium carbonate dried at 110 ℃ in a 50ml beaker, moisten with a small amount of water, add 10ml 3mol·L -1 hydrochloric acid (GR) to dissolve, and boil by Go to carbon dioxide. After cooling transferred to