离子色谱法测定脱水蒜中二氧化硫的含量  

Determination of sulfur dioxide in dehydrated garlic by ion chromatography

作　　者：丁宇清[1] 

机构地区：[1]江苏省徐州市疾病预防控制中心,江苏徐州221000

出　　处：《中国卫生检验杂志》2009年第9期2014-2015,共2页Chinese Journal of Health Laboratory Technology

摘　　要：目的：建立脱水蒜制品中二氧化硫的离子色谱测定方法。方法：用甲醛缓冲液提取脱水蒜中的二氧化硫,以KOH水溶液为流动相进行离子色谱法测定,依据保留时间定性,外标法定量。结果：方法线性范围为0.50-15.0 mg/L,回收率为94.5%-106.5%,相对标准偏差＆lt;5%,检出限为0.55 mg/kg。结论：该方法具有准确、灵敏、快速、简便等特点,可应用于实际样品的测定。Objective： To establish a method for determination of sulfur dioxide in dehydrated garlic by ion chromatography. Methods： Sulfur dioxide in dehydrated garlic were extracted by formaldehyde buffer solution. The qualitative analysis was made by comparing the reservation time, quantitative analysis was made by external standard method. Results：The linear range of the method was 0. 50 -15.0 mg/L,The rates of recovery were 94. 5% - 106. 5% and the detection limit was 0. 55 mg/L, relative standard deviation 〈 5%. Conclusion ：The method is fast, sensitive, accurate and highly selective. Thus it can be used for determination of sulfur dioxide in dehydrated garlic.

关 键 词：离子色谱法 二氧化硫 脱水蒜 

分 类 号：O557.75[理学—热学与物质分子运动论]