灵敏度sensitivity 低质量数low mass: >40 M cps/ppm 中质量数middle mass: > 100 M cps/ppm 高质量数 high mass: > 100 M cps/ppm 随机背景random background: < 0.5 cps (220amu) 仪器信噪比instrument signal/noise ratio:>200,000,000 (>200M )氧化物离子oxide ion lever (MO+/M+) < 2 % 短期稳定性short-term stability (RSD): <2 % (不用内标) 长期稳定性long-term stability (RSD): <3 % (4小时hour) (不用内标)(使用1ppb标准元素溶液using 1ppb standard element solution) 质谱校正稳定性mass calibration drift: < 0.05 amu/一天day, <0.1amu/一个月month 同位素比精度 isotope ratio precision: < 0.2 % 107 Ag/109 Ag |
仪器设备