衍生-气相色谱法测定水产品中的游离甲醛  

Determination of free-formaldehyde in aquatic products by derivatization and gas chromatography

作　　者：王佰华[1] 张薇君[1] 

机构地区：[1]海南出入境检验检疫局技术中心,海口570105

出　　处：《分析试验室》2007年第3期88-90,共3页Chinese Journal of Analysis Laboratory

摘　　要：建立了水产品中游离甲醛残留量的衍生-气相色谱快速检测方法，对衍生剂、抗干扰剂、萃取剂、色谱条件进行了研究。用HP-5（30m×0．32mm i．d．，0．25μm）毛细管色谱柱，程序升温，7．ECD检测器，外标法定量。甲醛的检出限为0．05mg/kg，在0．1～20．0mg／L范围内，其线性相关系数R^2=0．9994，标；隹偏差为0．041，在0．5、1．5、5．0mg/kg3个添加水平下回收率为89．6％～102．6％。3个实验室间的RSD为2．7％～4．4％。A method was developed for rapid determination of free-formaldehyde in aquatic products by derivatization and gas chromatography. Derivative, precipitator, extractive and chromatography conditions were studied. HP-5 （30 m ×0.32 mm i.d., 0.25μm） capillary column and 7-ECD detector were employed. The detection limit was 0.05 mg/kg. The linear range was 0.1 - 20.0 mg/L, R^2 = 0.9994, standard deviation was 0.041. The recoveries were about 89.6% - 102.6% with additive levels at 0.5, 1.5, 5.0 mg/kg, The relative standard deviations between laboratories were 2.7 % ～ 4.4%.

关 键 词：气相色谱 游离甲醛 水产品 

分 类 号：O657.7[理学—分析化学]