稳定同位素比质谱仪

【来源:草地农业生态系统国家重点实验室 | 发布日期:2014-03-17 】    

主要规格及技术指标

1.质量数范围:1~150 dalton at 10KV2.分辨率:CNOS:m/Δm/=200(10% valley ) H/D:m/Δm/=25(10% valley )3.绝对灵敏度:800 molecules/Ion4.离子源线性:0.02/nA5.样品消耗 :0.1nmol/S CO2 for 10-8nA at mass 446.H3+因子:<10ppm/nAStability better than 0.03ppm/nA/h7. 峰顶平坦度:better than 2x10--48. 丰度灵敏度:The contribution of the mass 44 intensity to the intensity of mass 45 is less than 2x10-69. 加速电压:10KV10. 分析器有效半径:CNOS 46cm H/D 18cm11.放大器输出范围:0-50V12. 元素分析仪及其接口外精度: 13C: (50ug)0.15(5 ug)0.2 15N: (50ug)0.15(10ug)0.4 34S: (50ug)0.2‰,18O: (50ug for Benzoic acid, 0.5ul for H2O) 0.2‰,H/D: (25ug for Benzoic acid, 0.5ul for H2O) 3 元素浓度:C 1% N 1%13. 自动痕量气体预浓缩器外精度: 13C/12C for CH4:0.5 ‰;15N/14N for N2O:0.5 ‰,18O/16O for N2O 1.0

主要功能及特色

高精度测定同位素13C15N的丰度比