Table 1 Information about emission sectors and sources included in the present study
Number | Sectors | Emission sources | No. of samples (n = 21) | Raw material | Activity |
|---|---|---|---|---|---|
1 | Chemical manufacturing sector (NAICS 325) | Organic solvent | n = 4 | Solvent | Organic solvent |
Synthetic resin | n = 2 | Plastic pellets, resin | Plastic, chemical | ||
Acrylic resin | n = 2 | Acrylic polymer resin | Acrylic resin | ||
Polyester resin | n = 1 | Polyester resin | Plastic product | ||
2 | Plastics products manufacturing sector (NAICS 326) | Plastic tape | n = 1 | Ethyl acetate | Tape manufacturing |
3 | Metals manufacturing sector: Primary (NAICS 331) and fabricated metal product manufacturing NAICS 332) | Integrated iron and steel | n = 1 | Sinter | Steel |
Aluminum foundry | n = 3 | Aluminum alloy ingot | Mechanical equipment, locomotive parts | ||
Steel foundry | n = 2 | Stainless steel ingot | Metal product | ||
Metal products and machinery | n = 1 | Metal-hardware parts | Metal product | ||
Non-ferrous metal | n = 1 | – | Mechanical equipment | ||
4 | Leather manufacturing sector (NAICS 313) | PU leather | n = 1 | Aqueous solvent resin | Artificial leather |
5 | Printing and related support activities sector (NAICS 323) | Plastic coating | n = 1 | Polyester foil film | Plastic coating |
Stencil printing | n = 1 | Ink | Printing and data storage media production |