作者：颜琪
作者单位：甘肃省产品质量监督检验中心, 甘肃 兰州 730030
关键词：离子色谱法; 亚硝酸盐; 肉制品
摘要：
建立了离子色谱法快速定量肉制品中亚硝酸盐含量的分析方法。以1.2mmol/L Na2CO3-1.8mmol/L NaHCO3为淋洗液,分析柱为Dionex AS14,检测器为化学抑制型电导检测器。检出限为0.04mg.L-1,加标回收率为96.8%~99.4%,与GB/T5009.33比色法比较相对偏差小于1%。方法简便,快速,用于肉制品中亚硝酸盐含量的测定结果满意。
Nitrite Content of meat products determined by ion chromatography
YAN Qi
Gansu Supervision and Inspection Center for Product Quality, Lanzhou 730030, China
Abstract: Ion chromatographic method for rapidly analyzing nitrite content of meat products quantitatively was introduced.Mixture of 1.8mmol/L NaHCO3 and 1.2mmol/L Na2CO3 was used as mobile phase,Diones AS14 was used as separation column,and suppressed conductivity detector was used to detect nitrite.Experimental results showed detection limit of this method was 0.04mg/L for nitrite,and its recoveries were in the range from 96.8% to 99.4%.It also was proved that their relative deviations were less than 1% by comparing results of this method with those of spectrophotometric method GB/T5009.33.Those results indicate that this method is easy to use,time-saving,and suitable for nitrite content determination of meat products.
Keywords: Ion chromatography; Nitrite; Meat products
2007, 33(5): 137-138 收稿日期: 2007-4-28;收到修改稿日期: 2007-7-6
基金项目:
作者简介: 颜琪(1964-),女,上海市人,工程师,研究方向为食品质量和安全分析。
参考文献
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