Research on the Method of Determining Titanium Content in Pyrotechnic Composition
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摘要:对烟火药剂中钛含量的测定进行了研究，确定了测定方法。烟火药剂试料经过预处理后，经稀硝酸充分溶解、过滤后再用盐酸溶解滤渣，将钛离子与其它影响测定的金属离子分离；过滤后，用氯酸钾把三价钛离子全部氧化成四价钛离子，然后用EDTA络合滴定法测定出钛含量。实验表明：本研究提出的方法准确，其回收率为98.18%～99.91%，完全满足烟火药剂中钛含量的测定要求。
Abstract:The method determination of titanium content in the pyrotechnic composition is researched, and has been proved to be an effective test method. After the pretreatment, the pyrotechnic sample which contained titanium was dissolved in nitric acid and hydrochloric acid by turns, the titanium ion was separated alone from the other metal ion which would influence the testing, and it can be determined by the method of EDTA complexo metric titration measurement when trivalent titanium iron is oxidized totally to quadrivalent titanium iron by potassium chlorate. Test result show that this method, which recovery percent is between 98.18% and 99.91%, is accurate and can meet with all the requirements of the titanium content testing in pyrotechnic composition.
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