保留时间锁定在水基胶中苯系物检测方面的应用

Locking retention time applied in testing benzene series in water-based adhesives

根据保留时间锁定的原理,参照烟用水基胶中苯系物的测定方法,分别建立了保留时间-进样口压力校正关系、保留时间-柱流量校正关系;然后采用GC-MS(气相色谱-质量联用仪)将保留时间锁定法应用于其他样品中苯系物的检测。研究结果表明:调节柱流量法、调节进口压力法均可实现保留时间的锁定,并且这两种方法具有一致性和有效性;通过建立5种苯系物(如苯、甲苯、对二甲苯、间二甲苯和邻二甲苯等)的保留时间谱库,并将其应用于其他样品中苯系物的检测,可实现快速定性、定量分析,并且可实现大量样品的高通量自动分析。

On Ihe principle of loeking relention lime, refer to testing method of benzene series in water-based adhesive for smoke, Ihe calibration relationships of retention time-inlet pressure and retention time-column flow were respeetiwdy eslablished. Then, benzene series in other samples were tested by locking retention time method fi＇om GC-MS（ gas ehromalography-mass spectrometry instrument）.