Abstract：The sample was dissolved with sodium hydroxide solution and hydrogen peroxide. Potassium sodium tartrate solution was added to eliminate the interference of Fe3+. Thiourea solution was added to increase the tolerant amount of Cu2+. In diluted sulfuric acid medium, titanium could react with chromogenic reagent of thymol blue to form stable and blue purple complex in presence of sensitizer of arabic gum. Consequently, a determination method of titanium in aluminum alloy by thymol blue spectrophotometry was established. The results showed that the maximum absorption peak of complex located at 590nm. The Beer′s law was obeyed for the mass concentration of titanium in range of 0.1-2μg/mL. The detection limit of method was 0.03μg/mL. The apparent molar absorptivity was 3.7×104 L·mol-1·cm-1. The proposed method was applied for determination of titanium in certified reference material of aluminum alloy. The results were basically consistent with the certified values. The relative standard deviations (RSD, n=6) of determination results were between 2.3% and 3.4%.
薛光荣,夏敏勇.N2O-C2H2火焰原子吸收光谱法测定铝合金[J].冶金分析,2008,28(3):71-74.XUE Guang-rong,XIA Min-yong.Determination of aluminum alloy by N2O-C2H2 flame atomic absorption spectrometry[J].Metallurgical Analysis,2008,28(3):71-74.
[2]
马光强,邹敏,王琪琳.硫酸铁铵滴定法测定高钛型高炉渣中的钛[J].中国测试,2014,40(3):48-49.MA Guang-qiang,ZOU Min,WANG Qi-lin.Determination of titanium in high titanium slag by ammonium ferric sulfate titration[J].China Test,2014,40(3):48-49.
[3]
邓桂春,臧树良.铝合金中钛的光度分析法研究[J].理化检验:化学分册,2001,37(11):501-504.DENG Gui-chun,ZANG Shu-liang.Photometric analysis of titanium in aluminum alloy[J].Physical Testing and Chemical Analysis Part B:Chemical Analysis,2001,37(11):501-504.
[4]
张统,顾玲玲,鞠云姣.二溴羟基苯基荧光酮分光光度法测定钛[J].冶金分析,2000,20(6):41-43.ZHANG Tong,GU Ling-ling,JU Yun-jiao.Determination of titanium by dibromohydroxyphenylfluorone spectrophotometry[J].Metallurgical Analysis,2000,20(6):41-43.
[5]
周之荣,周瑜芬,牛建国,等.氧化偶氮胂M褪色光度法测定钛(IV)[J].分析试验室,2005,27(5):51-54.ZHOU Zhi-rong,ZHOU Yu-fen,NIU Jian-guo,et al.Determination of titanium arsone by oxidative azo M fading spectrophotometry[J].Chinese Journal of Analysis Laboratory,2005,27(5):51-54.
[6]
乐爱山.二安替比林甲烷光度法测定工业硅中钛[J].冶金分析,2000,20(2):50-51.LE Ai-shan.Determination of titanium in industrial silicon by diantipyrine methane spectrophotometry[J].Metallurgical Analysis,2000,20(2):50-51.
[7]
杨浩义,晏高华,钟国秀.二安替比林甲烷光度法测定铜合金中钛[J].冶金分析,2007,27(9):77-78.YANG Hao-yi,YAN Gao-hua,ZHONG Guo-xiu.Determination of titanium in copper alloy by diantipyrine methane spectrophotometry[J].Metallurgical Analysis,2007,27(9):77-78.
[8]
高琳.二安替比林甲烷分光光度法测定铝合金中钛[J].冶金分析,2008,28(7):56-58.GAO Lin.Determination of titanium in aluminum alloy by diantipyrine methane photometry[J].Metallurgical Analysis,2008,28(7):56-58.
[9]
马光强,邹敏,霍红英.二安替比林甲烷光度法测定高钛型高炉渣中钛[J].冶金分析,2013,33(7):77-80.MA Guang-qiang,ZOU Min,HUO Hong-ying.Determination of titanium in high titanium slag by diantipyrine methane spectrophotometry[J].Metallurgical Analysis,2013,33(7):77-80.
[10]
邓军华,王一凌,亢德华.二安替比林甲烷光度法测定高碳锰铁中钛含量[J].铁合金,2017(2):42-45.DENG Jun-hua,WANG Yi-ling,KANG De-hua.Determination of titanium content in high carbon ferromanganese by spectrophotometry with diantipyrin[J].Ferro-alloys,2017(2):42-45.
[11]
田伦富,杨强,代以春,等.二安替比林甲烷分光光度法测定钒基合金中钛含量[J].理化检验:化学分册,2017,53(10):1229-1231.TIAN Lun-fu,YANG Qiang,DAI Yi-chun,et al.Determination of titanium content in vanadium base alloy by diantipyrine methane spectrophotometry[J].Physical Testing and Chemical Analysis Part B:Chemical Analysis,2017,53(10):1229-1231.
[12]
严进.钛(IV)-二安替比林甲烷-异丙醇体系分光光度法测定赤泥渣中二氧化钛的含量[J].理化检验:化学分册,2017,53(10):1217-1219.YAN Jin.Titanium (IV)-diantipyrin methane-isopropanol system spectrophotometry for the determination of titanium dioxide in red sludge[J].Physical Testing and Chemical Analysis Part B:Chemical Analysis,2017,53(10):1217-1219.
