双瓮漏斗厕所臭气浓度的调查研究

Investigation and Research on Stink Concentration in the Latrine with Funnel-Shaped Pan and DoubleJar

对双瓮漏斗厕所臭气浓度的监测表明，其氨、硫化氢、３－甲基吲哚等三种臭气浓度比旧式厕所有非常显著的减少，且与厕所的卫生管理水平有关。其臭气嗅觉强度主要由吲哚引起，在低浓度情况下用官能检查法非常灵敏；氨用仪器分析法测定比较简便，有一定代表性和实用价值。

he Latrine stink level is an important index of the sanitation. The supervision and measurement results have shown that the concentration of ammonia,hydrogen sulphide and 3-methyl-indole in the new style latrine air is evidently less than that of the old style latrine,showing the stink-resisting effect of the latrine with Funnel-shaped pan.However,there will be no difference between the two styles if the latrine with Funnel-shaped pan is badly managed,and the purpose of sanitation can not be realized.This supervision and measurement can bring about this impression: the stink strength of latrine in the countryside is mainly created by 3-methyl-indole,not much relating to hydrogen sulphide or ammonia.If the stink strength is low,the inspection method by smell is very sensitive; the ammonia analysis method is simple and typical,and of practical value.