【摘要】 目的建立一种测定工作场所空气中蒸汽态邻苯二甲酸二丁酯的气相色谱方法。方法空气中的邻苯二甲酸二丁酯用硅胶管采集、解吸后,经毛细管色谱柱分离,氢火焰检测器检测。结果当标准溶液质量浓度为0.05~25.00g/mL时,邻苯二甲酸二丁酯的标准曲线线性方程为y=5.2x-0.7,相关系数r为0.999 6;检出限为0.05μg/mL,最低检测质量浓度为0.03mg/m3(采样体积为3L);方法批内精密度为3.4%~4.8%,批间精密度为4.4%~6.8%;平均解吸效率为94.4%~100.9%。结论该方法实现了使用一种分析仪器即可测定工作场所空气中气溶胶态和蒸汽态邻苯二甲酸二丁酯,获得了比较满意的效果。更多还原

【Abstract】 Objective To establish a method for determination of vapor state dibutyl phthalate(DBP)of air in the workplace by gas chromatography.Methods The DBP in air was collected and desorbed by silica gel tube and separated by capillary chromatographic column,followed by analysis by hydrogen flame detector.Results When the standard solution concentration was in the range of 0.05μg/mL-25.00μg/mL,the standard curve equation of DBP was y=5.2 x-0.7,the correlation coefficient was 0.999 6,the detection limit was 0.05μg/mL,the minimum test concentration was 0.03 mg/m3(sample volume was 3 L),the in batch precision was 3.4%-4.8%,the inter batch precision was 4.4%-6.8%,the average desorption efficiency was 94.4%-100.9%.Conclusion The established method achieved determination of the aerosol state and the vapor state DBP of air in the workplace by an analytical instrument with satisfactory results.更多还原