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一氧化碳是一种不易觉察到的,对人体毒害很大的气体。空气中一氧化碳的浓度只有低于0.0024%才认为是无害的。在煤矿中,根据矿井空气或火区密闭内一氧化碳浓度的变化,可以判断煤的自燃趋势和密闭中火的熄灭情况。因此,及时、准确地测定环境空气和矿井气体中的一氧化碳浓度,对环境保护、人体健康和安全生产都有很重要的意义。测定微量一氧化碳的方法很多。目前应用比较普遍的有:比色与比长式检定管法、五氧化二碘法、电导法、光电比色法、红外线及气相色谱法等。在这些方法中,有的
Carbon monoxide is an imperceptible gas that is highly toxic to humans. Airborne carbon monoxide concentrations of less than 0.0024% are considered harmless. In coal mines, the tendency of spontaneous combustion of coal and extinguishment of airtight medium-fire can be judged according to the change of carbon monoxide concentration in the air or confined area of the mine. Therefore, timely and accurate determination of carbon monoxide concentration in ambient air and mine gas is of great significance to the protection of the environment, human health and safe production. There are many ways to measure trace carbon monoxide. Currently more commonly used are: colorimetric and longer than the test tube, iodine dioxide method, conductivity method, photoelectric colorimetry, infrared and gas chromatography. Among these methods, some