离子色谱法测定米线中甲醛次硫酸氢钠的含量  

Determination of Sodium Bisulfoxylate Formaldehyde in Rice Noodles by Ion Chromatography

作　　者：廖予琦 侯英 杨燕 杨蕾[2,3] 许志成 李璐芸 

机构地区：[1]云南瑞升烟草技术(集团)有限公司,昆明650106 [2]云南同创检测技术股份有限公司,昆明650106 [3]昆明理工大学环境科学与工程学院,昆明650500

出　　处：《化学分析计量》2015年第2期48-51,共4页Chemical Analysis And Meterage

摘　　要：建立了测定米线中甲醛次硫酸氢钠（甲醛次硫酸氢钠）的离子色谱方法。样品采用0.03 mol／L的NaOH溶液提取，离子色谱分离，KOH淋洗液洗脱，电导检测器测定。结果表明：方法的线性范围为2.0～50.0μg／mL，检出限为0.007μg／mL，测定结果的相对标准偏差不大于2.72%（n=6），加标回收率为91.4%～110.7%。该方法前处理简单、样品稳定性好、准确度高，具有较高的实用价值。An ion chromatography method was developed to determine sodium bisulfoxylate formaldehyde in rice noodles.The sample was extracted with sodium hydroxide solution of 0.03 mol/L and separated by ion chromatograph, then determined by electrical conductivity detector after being eluted with aqueous potassium hydroxide. The results showed that thelinearity range of this method was 2.0–50.0 mg/L, and the limit of detection was 0.007 mg/L. The relative standard deviation of determination results was not more than 2.72%（n=6）. The recovery was 91.4%–110.7%. This method is of simple pretreatment, better sample stability,higher accuracy and better practical uses.

关 键 词：离子色谱法 米线 甲醛次硫酸氢钠 

分 类 号：O657.7[理学—分析化学]