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当前位置: 首页 > 文章 > 离子色谱法测定乳制品中硫氰酸盐的研究 安徽农业科学 2014 (20) 286-287
Position: Home > Articles > Determination of Rhodanate in Dairy Product by Ion Chromatography Journal of Anhui Agricultural Sciences 2014 (20) 286-287

离子色谱法测定乳制品中硫氰酸盐的研究

作  者：
陈敬;钱振杰;潘亮;冯家望;余以刚
单  位：
华南理工大学轻工与食品学院;珠海出入境检验检疫局技术中心
关键词：
硫氰酸盐;离子色谱;乳制品
摘  要：
[目的]建立乳制品中硫氰酸盐含量测定的离子色谱方法。[方法]样品溶液经乙酸沉淀,去除蛋白质及脂肪的干扰后,过滤装瓶。采用Ion Pac AS11-HC柱(4 mm×250 mm)对其进行分离。以保留时间定性,试样中硫氰酸根峰面积比与标准系列比较定量。[结果]试验表明,硫氰酸盐在0.1~2.0 mg/L范围内线性关系良好,相关系数为R2=0.999 6,添加回收率为92.0%~96.6%,变异系数分别为1.18%~2.28%,定量限为1.0 mg/kg。[结论]该方法简便、快速、可靠,可用于市售乳制品中硫氰酸盐含量的测定。
译  名：
Determination of Rhodanate in Dairy Product by Ion Chromatography
作  者：
CHEN Jing;YU Yi-gang;School of Light Chemistry and Food Science,South China University of Technology;
关键词：
Rhodanate;;Ion chromatography;;Dairy product
摘  要：
[Objective]A method was developed to determine the concentration of rhodanate in dairy product by ion chromatography. [Method]The protein and fat in sample solution were precipitated by acetic acid,and then filtered and bottled. The separation of rhodanate was achieved on Ion Pac AS11-HC column( 4 mm × 250 mm) with isocratic elution program. Qualitative analysis was conducted by the retention times and quantitation by external standard method. [Result]The standard curve of rhodanate was linear( R2= 0. 999 6) and the concentration range was from 0. 1 to 2. 0 mg /L. The average recovery rate of rhodanate in fresh milk was from 92. 0% to 96. 6% and RSD was from1. 18% to 2. 28%. The limit of quantitation was 1. 0 mg /kg. [Conclusion]This method is simple,rapid,reliable and suitable for measuring total content of propionic acid in food.

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