Compound | TLVa | Limit valueb | Location |
---|
Upwind-A | Downwind-A | Upwind-B | Downwind-B |
---|
Ammonia | 18,973 | 1970 | < 300 | < 300 | < 300 | < 300 |
Hydrogen sulfide | 15,178 | 37 | ND | 17.9 | 6.2 | 5.8 |
Methyl mercaptan | 1071 | 3 | ND | ND | ND | ND |
Carbon disulfide | 3392 | 884 | ND | 23.8 | ND | ND |
Dimethyl sulfide | 27,678 | 25 | ND | 1.3 | 0.9 | ND |
Dimethyl disulfide | 2098 | 15 | ND | ND | ND | ND |
Styrene | 92,857 | 1077 | 15.7 | 7.7 | 0.5 | 11.7 |
- aTLV, threshold limit value, the value was time weighted average concentration for a normal 8-h workday and reflected the level of exposure that the typical worker can experience without an unreasonable risk of disease or injury; the data come from “American Conference of Governmental Industrial Hygienists (ACGIH)”
- bLimit value, Emission Standards For Odor Pollutants (China, GB 14554–93); ND, not detected; “A” in x axis represents sampling without waste unloading and sorting operation; “B” represents sampling during waste unloading and sorting operation