毛细管气相色谱法测定矿坑水中的苯系物

以国家标准方法和EPA方法为基础, 进行了矿坑排水中苯系物的测定.在测定过程中进行了质量保证和质量控制实验, 用外标法定量.在水样测定的同时对用自动顶空进样器和吹扫捕集浓缩仪两种进样方式测定矿坑排水中苯系物的方法进行了比较, 对进样方式和影响测定的因素进行了讨论.结果表明, 自动顶空进样器的回收率为108.5 8%~116.38%, 方法检出限为5.00~10.00 μg/L; 吹扫捕集浓缩仪的回收率为94.87%~105.6 3%, 方法检出限为0.25~0.50 μg/L. 

CAPILLARY GAS CHROMATOGRAPHIC DETERMINATION OF MONONUCLEAR AROMATICS IN MINING DRAINAGE

The mononuclear aromatics in mining drainage were determined in line with the China national standard methods and American EPA methods. During the determination, QA/QC experiments were completed and samples were quantitatively measured by external standard. This paper compares the injection methods by HP 7694E Headspace Sampler and HP 7695 Purge & Trap Concentrator. Using HP 7694E Headspace Sampler, the mononuclear aromatics recovered ranged from 108.58% to 116.38% and the limits of the method detection were in the range between 5.00 and 10.00 μg/L. Using HP 7695 Purge & Trap Concentrator, the mononuclear aromatics recovered ranged from 94.87% to 105.63% and the limits of the method detection were in the range 0.25-0.50 μg/L.