Lammert Stephen A, Rockwood Alan A, Wang Miao, Lee Milton L, Lee Edgar D, Tolley Samuel E, Oliphant James R, Jones Jeffrey L, Waite Randall W
Department of Chemistry and Biochemistry, Brigham Young University, C267 BNSN, 84602, Provo, UT, USA.
Adjunct Research Faculty, USA.
J Am Soc Mass Spectrom. 2006 Jul;17(7):916-922. doi: 10.1016/j.jasms.2006.02.009. Epub 2006 May 12.
A miniature ion trap mass analyzer is reported. The described analyzer is a 1/5-scale version of a previously reported toroidal radio frequency (rf) ion trap mass analyzer. The toroidal ion trap operates with maximum rf trapping voltages about 1 kVp-p or less; however despite the reduced dimensions, it retains roughly the same ion trapping capacity as conventional 3D quadrupole ion traps. The curved geometry provides for a compact mass analyzer. Unit-mass resolved mass spectra for n-butylbenzene, xenon, and naphthalene are reported and preliminary sensitivity data are shown for naphthalene. The expected linear mass scale with rf amplitude scan is obtained when scanned using a conventional mass-selective instability scan mode combined with resonance ejection.
报道了一种微型离子阱质量分析仪。所述分析仪是先前报道的环形射频（rf）离子阱质量分析仪的1/5比例版本。环形离子阱在最大射频捕获电压约为1 kVp-p或更低的情况下运行；然而，尽管尺寸减小，但它保留了与传统3D四极离子阱大致相同的离子捕获能力。弯曲的几何形状使质量分析仪结构紧凑。报道了正丁基苯、氙和萘的单位质量分辨质谱，并给出了萘的初步灵敏度数据。当使用传统的质量选择不稳定性扫描模式与共振喷射相结合进行扫描时，可获得预期的射频幅度扫描线性质量标度。
