【摘要】 建立了测定纺织品中游离甲醛的衍生气相色谱法 ,方法的测定限为 0 .0 0 1 5mg L ,线性关系R2 =0 9999;线性范围为 0 .0 0 1 5～ 4 0mg L ;相对标准偏差为 1 .8%和 3 .3 % ;回收率为 93 .2 %～1 0 1 .1 %。更多还原

【Abstract】 Free formaldehyde in textile products was collected by water, derivatized with 2,4-dinitrophenylhydrazine and extracted by cyclohexane. The extract was separated on a HP-17 chromatographic column and determined by gas chromatography with electron capture detector. The detection limit was 0.15 mg/kg, which shows excellent sensitivity. The recoveries were 93.2%～101.5% and RSD was <3.3%. The method has been applied to the determination of free formaldehyde in textile products.更多还原