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直接用二安替吡啉甲烷在1.2～3.6M盐酸介质中测定钢中钛已是较成熟及常用的方法。但一般资料介绍该法的测定范围是0.01～2.50％,近年来,随着冶金工业的迅猛发展,国际标准的广泛采用,要求分析下限逐渐降低。如滚珠钢的SKF标准就规定GCr15钛含量小于0.005％。因此,有必要将二安替吡啉甲烷测钛方法加以适当改进。为此目的,笔者根据检测下限尽量延伸原则,就试样用量、分析用水、掩蔽剂、显色时间等进行了试验及改进,从而提高了方法的灵敏度,使测定下限可达0.OO1％。试验结果还表明,改进后的方法具有简便、快速、再现性好。准确度较高等优点。方法的测定范围为0.001～0.010％。
It is a more mature and commonly used method to determine titanium in steel directly by using di-antilipid methane in 1.2-3.6M hydrochloric acid medium. However, the general information on the determination of the law range of 0.01 to 2.50%, in recent years, with the rapid development of the metallurgical industry, the widespread adoption of international standards, requiring analysis of the lower limit gradually decreased. Such as the steel ball SKF standard on the provisions of GCr15 titanium content of less than 0.005%. Therefore, it is necessary to diantipyrylmethane methane titanium method to be properly modified. To this end, the author based on the detection limit as far as possible to extend the principle of the sample amount, analysis of water, masking agents, color time and other tests and improvements, thereby increasing the sensitivity of the method so that the determination of up to 0.OO1%. The test results also show that the improved method is simple, fast and reproducible. High accuracy and so on. The determination range of the method is 0.001 to 0.010%.