加速溶剂萃取-离子色谱法测定肉制品中的硝酸根及亚硝酸根  

Accelerated Solvent Extraction-Ion Chromatography with Conductivity Detection for the Extraction and Determination of Nitrate and Nitrite in Meat

作　　者：曾雪灵[1] 叶明立[1] 陈永欣[1] 朱岩[1] 

机构地区：[1]浙江大学西溪校区化学系,浙江杭州310028

出　　处：《分析测试学报》2006年第3期92-94,共3页Journal of Instrumental Analysis

基　　金：国家自然科学基金资助项目(20375035);浙江省自然科学基金资助项目(Z404105);教育部及浙江省留学回国人员科研启动基金;分析测试基金资助项目

摘　　要：采用加速溶剂萃取(ASE)快速萃取仪提取肉制品中的硝酸根及亚硝酸根,并用KOH梯度淋洗,IonPac AS18离子色谱柱分离,电导检测对其进行检测。在相同的萃取体积和萃取时间下,ASE萃取与传统超声萃取相比具有萃取率高的优点。在所建立的色谱条件下,NO3-、NO2-的质量浓度与峰面积或峰高具有很好的线性和重复性。检出限分别为2.33、1.62μg/L。An accelerated solvent extraction -ion chromatographic （ASE -IC） method was developed for the extraction and determination of NO3^- and NO2^- in meat. Compared with the ultrasonic extraction method, the ASE method has the advantages of higher extraction rate anti less extraction time. The NO3^- and NO^- were separated by gradient elution on an Ion Pac ASI8 column and detected by conductivity detector. The detection limits for NO3^- and NO2^- are 2.33μg/L and 1.62μg/L, respectively. The correlation coefficients for NO3^- and NO2^- are over 0.99 with peak area or peak height measurements. The method is sensitive, selective and effective, and can be rapidly and easily performed.

关 键 词：加速溶剂萃取 NO3^- NO2^- 离子色潜 

分 类 号：O657.75[理学—分析化学]