| 摘要： |
Rapidly and sensitively determining trace levels of contaminants with poor ionization in complex matrices is a great challenge for mass spectrometry analysis. In this work, a thermal decomposition tandem mass spectrometry (TD-MS/MS) method is developed for fast detecting tetrabromobisphenol A bis(allyl ether) (TBBPA-BAE) in soils. Typically, TBBPA-BAE solution in a capillary is decomposed and ionized under heating, then sprayed into the mass spectrometer for MS analysis. Upon optimization, one high abundant ion of m/z 542.75 from TBBPA-BAE by debromination is detected during heating process. By collision-induced dissociation, the ion is fragmented to release the characteristic ion of m/z 501.72, which is used as the target quantitative ion. Each test can be finished within 3 min. A linear range of 0.1-100 mu g L-1 limit of detection (LOD, S/N = 3, n = 9) of 0.015 mu g L-1, and relative standard deviation of 8.6% (c = 0.1 mu g L-1, n = 5) are achieved. The fast and sensitive performance of the developed method for analyzing TBBPA-BAE in soils presents its great potential for studying trace levels of TBBPA derivative contaminants. |
