M.Z.Barakat의 N-Bromosuccinimide에 依한 Arbutin의 微量 定量

다국어 초록 (Multilingual Abstract)

In this paper a modified method of M. Z. Barakat's microdetermination of
Hydroquinone was described By using 20 mg of NaHCO₃ crystalline powder ranging from
10 to 1 mg of Hydroquinone instead of M. Z. Marakat’s NaHCO₃ saturated solution. the
author could easily eliminate the certain factors which affect to the reproducibility of
titration values. This modified method has some advantages as follows.
1. There was on any affections which caused by different temperature of sample
solution to the titration values.
2. when the NaHC0₃ crystalline powder was added to the sample solution, there
was no significant error on the titration values until 10 minutes standing time.
3. There was no need to prepare freshly NaHCO₃ saturated solution for every titration.
4. This method was more accurate than the M. Z. Barakat’s one. The determination
error of this method was 0.6 per cent and the applied analysis'’(butter, lard and cod liver
oil) was 1. 00 per cent respectively comparing to the 2.00 per cent of Barakat’s one.

목차 (Table of Contents)

• 1. 緖論 1
• 2. 試藥 및 器具 2
• 2.1. 試藥 2
• 2.2. 器具 2
• 3. 定量 操作 2
• 4. 應用分析 2
• 5. 實驗結果 3
• 5.1. NaHCO₃ Cryst. Powd의 添加量과 KI 使用量 3
• 5.2. 試料溶液의 溫度의 影響 3
• 5.3 放置時間의 影響 4
• 5.4 調製後 時間經過한 NaHCO₃ Sat. SoIn. 의 影響 5
• 5.5.NaHCO₃ 溶液의 濃度의 影響 5
• 5.6 應用分析結果 (Butter, 腸脂, 肝油) 6
• 6.考察 6
• 結論 7