气相色谱–质谱法测定纤维板和刨花板中邻苯二甲酸酯类增塑剂

Determination of Phthalate Plasticizers in Fibreboard and Particleboard by Gas Chromatography–Mass Spectrometry

建立气相色谱–质谱方法测定纤维板和刨花板中6种邻苯二甲酸酯的方法。样品用正己烷提取后,采用HP–5MS毛细管柱(30 m×0.25 mm,0.25μm)分离,以内标法进行定量。邻苯二甲酸酯BBP,DBP,DEHP,DNOP在0.2~2μg/m L范围内线性均良好,检出限为2 mg/kg;DINP,DIDP在2.0~20μg/m L范围内线性均良好,检出限为10 mg/kg。线性相关系数均大于0.999。样品加标回收率为86.00%~95.17%,测定结果的相对标准偏差为3.06%~9.72%(n=6)。该方法具有较高的灵敏度,可应用于各类纤维板和刨花板产品中邻苯二甲酸酯类增塑剂的检测。

A method for the determination of6kinds of phthalate in fibreboard and particleboard by gaschromatography–mass spectrometry(GC–MS)was established.The sample was extracted with n-hexane and separated onHP–5MS capillary column(30m×0.25mm,0.25μm),the internal standard quantitative method was used.Linear rangeof BBP,DBP,DEHP,DNOP were0.2–2μg/mL with detection limit(3S/N)of2mg/kg,while linear range of DINP,DIDP was2.0–20μg/mL with detection limit(3S/N)of10mg/kg.The addition recoveries were86.00%–95.17%,andthe relative standard deviations of detection results were in the range of3.06%–9.72%(n=6).The method is suitable for thedetermination of PAEs in fibreboard and particleboard with higher sensitivity.