Determination of Nitrogen, Oxygen, and Hydrogen in Metals by Inert Gas Fusion. A Manometric Method.
Determination of Nitrogen, Oxygen, and Hydrogen in Metals by Inert Gas Fusion. A Manometric Method.
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通过惰性气体熔融测定金属中的氮、氧和氢。
DOI：
10.1021/ac60203a023
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发表时间：
1963
影响因子：
7.4
通讯作者：
H. T. Goodspeed
中科院分区：
文献类型：
--
作者：
B. Holt;H. T. Goodspeed
毛细管压力计用于通过惰性气体熔融技术同时测定微克量的氮气、氧气和氢气。样品熔化产生的气体由氦气携带，首先通过热氧化铜将 H/sub 2/ 氧化为 H/sub 2/O，将 CO 氧化为 CO/sub 2/，然后通过毛细管压力计冷阱分离并随后测量 H/sub 2/O（110 ℃）和 CO/sub 2/，最后通过-196 ℃的活性炭去除 N/亚2/。 N/sub 2/ 通过 Toepler 泵转移至毛细管压力计进行测量。完整分析所需时间约为25分钟；如果不需要所有三个元素，则更少。灵敏度和精度与真空聚变法大致相同。 （授权）
Capillary manometers were used for the simultaneous determination of microgram quantities of nitrogen, oxygen, and hydrogen by the inert-gas fusion technique. The gases evolved from fusion of the sample are carried by helium, flrst through hot copper oxide for oxidation of H/sub 2/ to H/sub 2/O and CO to CO/sub 2/, then through capillary-manometer cold traps for the isolation and subsequent measurement of H/sub 2/O (at 110 deg C) and CO/sub 2/, and finally through activated charcoal at --196 deg C for the removal of N/sub 2/. The N/sub 2/ is transferred by Toepler pump to a capillary manometer for measurement. The time required for a complete analysis is about 25 minutes; less, if all three elements are not required. Sensitivity and precision are about the same as for the vacuum fusion method. (auth)