A Bench top Quadrupole Mass Spectrometer System for Accurate Analysis of Trace Noble Gas was introduced in this paper. The inlet system was a especially designed one. And a capacitance pressure gauge with its linearit...A Bench top Quadrupole Mass Spectrometer System for Accurate Analysis of Trace Noble Gas was introduced in this paper. The inlet system was a especially designed one. And a capacitance pressure gauge with its linearity less than 0.01% was used to measure the fixed volume sample ratio. By using the calibration gas with the uncertainty of which less than 0.1% ,isotope condensed diluent could be quantified online. The procedure is done by alternate online mixture gas measurement of diluent gas, calibration gas to quantify the diluent gas, and diluent gas, sample gas to quantify the sample gas. The precision of six inlet from the same sample is +_0.13%0; The precision of six getting sample from the same source is less than ±0.5%. Self test was done by testing the mixture gas got with weighing method, in which consists Kr and Xe of 30 mg/kg. The system uncertainty tested to be below ±1%.展开更多
A new approach to the quatitative analysis of Kr and Xe by isotope dilution mass spectrometry (IDMS) has been developed using inductively coupled plasma mass spectrometry (ICP-MS). The typical relative standard uncert...A new approach to the quatitative analysis of Kr and Xe by isotope dilution mass spectrometry (IDMS) has been developed using inductively coupled plasma mass spectrometry (ICP-MS). The typical relative standard uncertainties of Kr and Xe IDMS are 1%.展开更多
A new measurement technique which can be applied to determine rare gas Kr and Xe under the order of ppm by ICP-MS has been developed by our group. The gas introduction apparatus were designed and relevant analysis par...A new measurement technique which can be applied to determine rare gas Kr and Xe under the order of ppm by ICP-MS has been developed by our group. The gas introduction apparatus were designed and relevant analysis parameters were optimized. On the base of these processes, the sensitivity of Kr and Xe analysis reached (0.6-1) ×10^6cps whenair sample were directly introduced at the sampling rate of 40mL/min. The detection limit of Kr and Xeisin the oder of 10^-9L/L and 10^-11L/L, respectively.展开更多
文摘A Bench top Quadrupole Mass Spectrometer System for Accurate Analysis of Trace Noble Gas was introduced in this paper. The inlet system was a especially designed one. And a capacitance pressure gauge with its linearity less than 0.01% was used to measure the fixed volume sample ratio. By using the calibration gas with the uncertainty of which less than 0.1% ,isotope condensed diluent could be quantified online. The procedure is done by alternate online mixture gas measurement of diluent gas, calibration gas to quantify the diluent gas, and diluent gas, sample gas to quantify the sample gas. The precision of six inlet from the same sample is +_0.13%0; The precision of six getting sample from the same source is less than ±0.5%. Self test was done by testing the mixture gas got with weighing method, in which consists Kr and Xe of 30 mg/kg. The system uncertainty tested to be below ±1%.
文摘A new approach to the quatitative analysis of Kr and Xe by isotope dilution mass spectrometry (IDMS) has been developed using inductively coupled plasma mass spectrometry (ICP-MS). The typical relative standard uncertainties of Kr and Xe IDMS are 1%.
文摘A new measurement technique which can be applied to determine rare gas Kr and Xe under the order of ppm by ICP-MS has been developed by our group. The gas introduction apparatus were designed and relevant analysis parameters were optimized. On the base of these processes, the sensitivity of Kr and Xe analysis reached (0.6-1) ×10^6cps whenair sample were directly introduced at the sampling rate of 40mL/min. The detection limit of Kr and Xeisin the oder of 10^-9L/L and 10^-11L/L, respectively.
