With the development of the ion trap from 3D hyperbolic Paul traps to 2D liner ion traps,the mass discrimination was highly optimized,together with the improved sensitivity.

• 离子阱质量分析器从传统的双曲型3D离子阱发展到2D线性离子阱,质量歧视效应得到了极大的改善,灵敏度得到了提高。