District Peitou in Taipei is known for hot spring, stench like rotten eggs is smelled quite often in the area, which is hydrogen sulfide vapor. As hydrogen sulfide vapor can damage eyes, respiratory organs, and cranial nerves, and because it happened that people who were hired to clean hot spring tank was killed for breathing excessive hydrogen sulfide gas, detecting the concentration of exposed hydrogen sulfide for hot spring maintenance people, that are those conduct simple maintenance operation, tank cleaning operation, pipe patrolling operation, therefore were conducted.The characteristics of hot spring in Peitou area can be categorized into acid sulfate (while sulfide), acid sulfate chloride (green sulfide), and mid to weak acid (iron sulfide). These three categories were compared if there were any difference in the hydrogen sulfide concentration that effects simple maintenance people for short-period exposure; and the factors of weather condition that effects pipe patrol people for short-period exposure.
