| 顶空气相色谱法测定牛奶中的硫氰酸盐 |
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| 引用本文： | 宣栋樑,朱震海,蔡嵘. 顶空气相色谱法测定牛奶中的硫氰酸盐[J]. 中国卫生检验杂志, 2012, 0(8): 1754-1756 |
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| 作者姓名： | 宣栋樑 朱震海 蔡嵘 |
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| 作者单位： | 上海市嘉定区疾病预防控制中心 |
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| 基金项目： | 上海市疾病预防控制系统优秀青年医学人才资助项目(SCDC区2006-10) |
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| 摘 要： | 目的:建立顶空进样-气相色谱法测定牛奶中硫氰酸盐的方法。方法:牛奶样品中的SCN-经过处理,在顶空瓶内进行反应生成CNCl;用气相色谱DB-5毛细管柱分离,电子捕获检测器检测,保留时间定性,外标法定量。结果:本法在0.04 mg/L～1.2 mg/L浓度范围内呈良好线性,方法检出限为3.6μg/kg,平均加标回收率98.0%～100.5%。结论:该方法灵敏、快速、简便,适用于牛奶产品中硫氰酸盐的检测。
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| 关 键 词： | 顶空气相色谱 电子捕获检测器 硫氰酸盐 牛奶 |
Determination of thiocyanate in milk by headspace gas chromatography |
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| XUAN Dong-liang,ZHU Zhen-hai,CAI Rong. Determination of thiocyanate in milk by headspace gas chromatography[J]. Chinses Journal of Health Laboratory Technology, 2012, 0(8): 1754-1756 |
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| Authors: | XUAN Dong-liang ZHU Zhen-hai CAI Rong |
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| Affiliation: | (Jiading District Center for Disease Control and Prevention,Shanghai 201800,China) |
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| Abstract: | Objective:To establish a method for the determination of thiocyanate in milk by headspace gas chromatography.Methods:After processing the sample,the thiocyanate in sample reacted with chloramine T to form cyanogen chloride(CNCl) in headspace bottle.The CNCl was determined by GC-ECD with DB-5 capillary column.Results:The linearity was good in the range of 0.04 mg/L～1.2 mg/L.The detection limit of the method was 3.6 μg/kg for SCN-in milk samples.The average recovery was 98.0%～100.5%.Conclucion:This method is sensitive,quick and convenient.It can be used for determination of SCN-in milk products. |
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| Keywords: | Headspace Gas Chromatography ECD Thiocyanate Milk |
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