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矿井中有害气体的测定,通常有常规法和快速测定法。常规法,采样和分析的时间长,不能即时测出现场空气中有害气体的成分和浓度。在矿井救灾、处理火区吋,井下空气中的成分及浓度不断变化,为此,需立即判明有害气体的成分、浓度及有无危险时,常规法是远远不能满足要求的。快速测定法,采样量少、操作简单,快速、灵敏度高,可达到上述要求。但是,由于受井下特殊条件和方法本身条件的限制,快速测定法还有一定缺欠,如准确度不高等,然而在安全生产上仍有实际意义。
Determination of harmful gases in mines, usually conventional and rapid determination. Conventional methods, sampling and analysis of a long time, can not be measured on-site air harmful gases composition and concentration. In the mine rescue and treatment of fire area, the composition and concentration of the underground air are constantly changing. For this reason, when the composition, concentration and presence or absence of hazardous gas need to be determined immediately, the conventional method is far from satisfying the requirements. Rapid determination method, sampling less, simple, fast, high sensitivity, can meet the above requirements. However, due to the special conditions under the mine and the limitations of the method itself, there are still some shortcomings of the rapid determination method, such as the accuracy is not high, but there is still practical significance in the safety of production.