热解涂层石墨管性能测试及其若干问题探讨

Performance Testing and Several Issue Discussing of Pyrolyzate Coating Graphite Tube

用石墨炉原子吸收光谱仪对国产热解涂层石墨管的使用寿命、灵敏度、精度等性能指标进行测试，并针对正常状态、原子化温度过高、载气不纯等几种不同条件下测试对石墨性能的影响进行讨论，得出了对实际应用有参考价值的结论。测试时条件界定较严格，选定典型的难熔金属元素Ｖ作为被测元素，有较强的代表性。

By using graphite furnace atomic absorption spectrometry, tested the life-time, sensitivity and precision of the PGT, discussed that the PGTs performance was impacted by several different tesing condition, such as the normal state, the over-high atomic temperature state and the impurity state of carry-gas, educed more valuable conclusion about actual application. The tesing condition was limited strictly, so that had more representative by choosing the difficult-melted V as the tested element.