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以试钛灵和二安替吡林甲烷分别与钛形成二元络合物用流动注射(FIA)分光光度测定已有报道,为使FIA进一步提高分析钛的灵敏度,本文根据在酸性介质中,当有阳离子表面活性剂溴化十六烷基三甲基铵(CTMAB)存在时,二溴苯基萤光酮(DBPF)与Ti(Ⅳ)生成可溶于水的紫红色三元络合物这一特点,采用一个确定流路系统分散系数D(ti)的有色溶液和一个被测试样的标准溶液,应用一种新的FIA梯度校正技术,建立了微量钛的FIA分光光度测定方法,方法的准确度、精密度均较好,选择性较高,可直接于水相中测定钢铁中的微量钛,分析速度达到每小时100个样品,相对标准偏差RSD=1.19％。
Flow injection (FIA) spectrophotometry has been reported for the formation of binary complexes with testitanium and diantipirin methane with titanium respectively. In order to further improve the sensitivity of titanium by analyzing FIA, When a cationic surfactant, cetyltrimethylammonium bromide (CTMAB) was present, dibromophenylfluorone (DBPF) and Ti (IV) generated a water-soluble fuchsine ternary complex This feature employs a new FIA gradient correction technique to establish a FIA spectrophotometric method for the determination of trace titanium using a color solution that determines the dispersion coefficient D (ti) of the flow path system and a standard solution of the sample to be tested. The method The accuracy and precision are better and the selectivity is higher. The micro titanium in the steel can be determined directly in the water phase, and the analysis speed reaches 100 samples per hour. The relative standard deviation RSD is 1.19%.