Department of Analytical Chemistry, Faculty of Science, Palacky University, Olomouc, Czech Republic.
J Chromatogr A. 2011 Feb 4;1218(5):746-51. doi: 10.1016/j.chroma.2010.12.013. Epub 2010 Dec 14.
A total of 196 out of 209 polychlorobiphenyl (PCB) congeners were resolved using GC×GC-TOFMS with a non-polar/ionic liquid column series consisting of poly(50%-n-octyl-50%-methyl)siloxane and (1,12-di(tripropylphosphonium)dodecane bis(trifluoromethansulfonyl)amide) in the first and second dimension, respectively. It has been found that 13 PCB congeners overlap in five doublets (CB12+CB13, CB62+CB75, CB70+CB76, CB97+CB125 and CB153+CB168) and one triplet (CB90+CB101+CB113). All toxic, "dioxin like" congeners were separated with no interferences from any PCB congener. The 109 PCBs present in Aroclor 1242 and the 82 PCBs present in Aroclor 1260 were resolved GC×GC-TOFMS analysis on this column set.
使用气相色谱-飞行时间质谱联用仪,通过非极性/离子液体柱系列(第一维和第二维分别为聚(50%-正辛基-50%-甲基)硅氧烷和(1,12-双(三丙基膦)十二烷双(三氟甲磺酰基)酰胺)),共解析了 209 种多氯联苯(PCB)同系物中的 196 种。研究发现,有 13 种 PCB 同系物在五个二联体(CB12+CB13、CB62+CB75、CB70+CB76、CB97+CB125 和 CB153+CB168)和一个三联体(CB90+CB101+CB113)中重叠。所有有毒的“二噁英样”同系物都被分离出来,没有任何 PCB 同系物的干扰。在该柱组上,用气相色谱-飞行时间质谱联用仪分析了 Aroclor 1242 中的 109 种 PCB 和 Aroclor 1260 中的 82 种 PCB。