Improving the gas-chromatographic determination of the composition of the gas liberated from a battery
Normally, gas chromatography is used for analyzing the gas composition that is liberated when batteries operate. Earlier work describes a gas-chromatographic technique for determining the composition of gas liberated from a battery. According to this reference, the gas is collected in an inverted burette over water. The gas is either sampled with a batching valve or with a medical syringe, which pierces the connecting vacuum hoses. The gas sample is injected into the chromatographic evaporator, and is separated on the chromatographic column into its individual components, each of which is analyzed on the detector. The method described was used to study gas liberation during the storage of charged nickel-zinc batteries. In the method described above, a high proportion of the gas specimen that accumulates and is collected in the measuring system occurs in the dead space volume. In this situation, it is very difficult to determine the liberated gas composition with a high degree of accuracy when the gas is liberated at low rates. Moreover, this method does not provide reliable system air tightness during long term operation of the batteries. 5 refs., 2 figs., 1 tab.
- OSTI ID:
- 159865
- Journal Information:
- Russian Journal of Applied Chemistry, Vol. 65, Issue 1; Other Information: PBD: 10 Jul 1992; TN: Translated from Zhurnal Prikladnoi Khimii; 65: No. 1, 210-212(Jan 1992)
- Country of Publication:
- United States
- Language:
- English
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