یک روش ساده و قابل اطمینان برای اندازه گیری اسپکتروفتومتری تیتانیوم دی اکسید در پیشرانه های جامد دو پایه: مطالعه مقایسه ای با اسپکتروفتومتری نشری اتمی-پلاسمای جفت شده القایی

In this research, A reliable and simple method was described for the determination of the amount of titanium dioxide (TiO2) in double base solid (DB propellants), based on a comparison with Inductively coupled plasma method. The method is based on complex formation of Ti(IV) with Chromotropic acid in acidic media and monitoring absorbance of colored product by spectrophotometric technique at 460 nm. The effect of experimental parameters on the reaction was investigated and optimized. Under optimal conditions, at, the calibration graph was linear in the range of 0.10-5.0 µg mL-1 of Ti(IV) with the limit of detection of 0.05 µg mL-1. The validity of the method was evaluated by means of the data statistical analysis. For this purpose, the method was applied to the determination of titanium dioxide in DB propellants, and the results were statistically compared based on t- and F-tests with those obtained by the by ICP-AES. There was no significant difference between the mean values and the precisions of the two methods at the 97% confidence level. The results showed that the proposed method offers an accuracy and reliable approach for the determination of TiO2 in DB propellants, and can be suggested as a routine method in quality control laboratories.