- 學位論文
發射藥中硝酸鋇檢測法評估
Evaluation of the Determination Methods for Barium Nitrate in Propellant
摘要
本研究利用熱板加熱消化發射藥，並以硫酸鋇沉澱法、感應耦合電漿發射光譜儀(ICP-OES)、火焰式原子吸收光譜儀(AA)及離子層析儀(IC)檢測發射藥中鋇含量進而推算其硝酸鋇含量。首先，探討美軍規格中所使用之方法為藉由硫酸鋇沉澱重量法推算硝酸鋇含量，並利用回收率、再現性及相對標準偏差等品管及統計手法來探討並評估方法的準確度及精密度；其次由美軍規格MIL-STD-286C中所規範之原子吸收(AA)檢測法來檢測鋇含量做比對，最後以建立感應耦合電漿光譜儀(ICP)及離子層析儀(IC)之檢測程序來分析發射藥中鋇含量，以探討方法之適用性及誤差源。研究結果顯示，按照美軍規格MIL-STD-286C沉澱法所計算出來之硫酸鋇含量回收率及再現性較為不佳，藉由實驗設計探討可能造成誤差之因素。並經由品管及統計的手法，證明ICP、AA及IC具有可信賴的結果。希望藉此研究成果能提供一快速、準確、靈敏之發射藥硝酸鋇分析方法。
並列摘要
In this study, the characterization methods of barium nitrate were investigated by inductively coupled plasma atomic emission spectrometry (ICP-OES), Flame Atomic Absorption Spectroscopy (FAAS), and Ion Chromatography (IC) to detect the concentration of barium in powder and estimate the concentration of barium nitrate. The gravimetrical method (by the sedimentation of the barium sulfate) of the MIL-STD-286C examined the concentration of barium nitrate of the powder, and the accuracy and repeatability of the method was justified by recovery rate, re-appear property, and relative standard deviation (RSD) of barium nitrate. Second, the gravimetrical method with the FAAS method of the MIL-STD-286C was constructed based on the concentration of barium. At the last, we analyzed the concentration of barium in powder based on the plasma atomic emission spectrometry and Ion Chromatography method to explore the applicability and potential error caused by of the gravimetrical method. The results showed the recovery rate and re-appear property of the method were inconsistent and the potential error source from traditional method was further evaluated. Meanwhile, the present study proved the reliability of ICP-OES、AA and IC regarding quality control and statistics. We hope this study provides a fast, accurate and intelligent (sensitive) method to analyze the concentration of barium nitrate within the powder.