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建立了多次顶空-捕集阱捕集/气相色谱质谱联用-基质加标校正曲线测定皮革中的挥发性有机物的方法。在10 m L无挥发性有机物的试剂水中加入1g皮革样品和2 g NaCl,顶空时间30 min,温度80℃,捕集阱加压循环3次。气质联用法分析皮革中的挥发性有机物,采用DB-624(60 m×0.25 mm×1.4μm)的色谱柱分离挥发性有机物,并采用基质加标校正标准曲线对目标化合物进行定量。目标化合物在1~400μg/L或20~400μg/L的内线性关系良好,R在0.995~0.999之间,不同浓度的加标回收率在80.8%~125%之间,相对标准偏差在1.3%~16%之间,检出限在0.08~21.7μg/kg。
A method for determination of volatile organic compounds in leather by headspace-trap capture / gas chromatography-mass spectrometry-matrix calibration curve was established. Add 1 g of leather sample and 2 g of NaCl to 10 mL of volatile organic-free reagent water. The headspace time is 30 min and the temperature is 80 ° C. The trap is pressurized and cycled three times. Gas chromatography-mass spectrometry (GC-MS) was used to analyze volatile organic compounds in the leather. The volatile organic compounds were separated on a DB-624 column (60 m × 0.25 mm × 1.4 μm) and the target compounds were quantified using a matrix calibration curve. The linearity of the target compound in the range of 1 ~ 400μg / L or 20 ~ 400μg / L was good, R was between 0.995 and 0.999, the spiked recoveries of different concentrations were between 80.8% and 125%, and the relative standard deviations were 1.3% ~ 16%, the detection limit is 0.08 ~ 21.7μg / kg.