In order to study the emission characteristics of VOCs from the electronics-manufacturing industry and associated health risk assessment, ten typical electronics enterprises were selected to carry out sample collection and VOCs detection. Moreover, the impacts of VOCs on human health were evaluated by the US EPA and ACGIH methods. The results showed that: The concentrations of VOCs emitted from different types of electronic enterprises exhaust gas were different. The VOCs concentrations in the semiconductor devise and electronic terminal product were relatively higher than those in the display device and printed circuit board, and the VOCs concentrations were 13.41~13.63, 3.34~86.11, 7.86~9.75 and 4.31~4.67mg/m3, respectively. The main organic group in semiconductor devise exhaust gas was alkanes (70.56%~70.78%), and dimethylpentane (32.03%~33.60%) was the main VOCs species. The main organic group in display device exhaust gas and printed circuit board exhaust gas were both OVOCs, accounting for 93.48%~95.87% and 92.27%~93.05%, respectively. Additionally, the highest mass fraction were acetone (91.89%~94.99%) and isopropanol (80.36%~83.07%) in display device and printed circuit board. Due to the different production products, VOCs components were different in the electronic terminal product, but mainly OVOCs, aromatics and alkanes. The coefficient of divergence between different enterprises was 0.67~0.91, indicating that VOCs source profiles must not be similar. Total hazard ratio for non-cancer risk in semiconductor devise was the highest (484.35), followed by display device (447.46), electronic terminal product (11.74~87.35) and printed circuit boards (2.25), suggesting long-term exposure of various electronic industries would cause non-cancer health hazards. The LCRs from semiconductor devise (1.63×10-3) and electronic terminal product (1.64×10-4~5.16×10-3) were much higher, suggesting that these enterprises have a certain cancer risk. The LCRs from display device and printed circuit board were 1.74×10-5 and 1.40×10-5, indicating that these enterprises have a high probability cancer risk. The total Ei from electronic terminal product was the highest, while that from display device was the lowest. However, the Ei in different electronics industries were lower than 0.1, indicating that VOCs emitted from these industries may not generate many harmful effects to the workers. The results of the cancer risk assessment using the EPA and ACGIH methods vary significantly. This is mainly because two methods have different limiting indicators for the reference concentration of VOCs species exposure. But on the whole, the health risks from VOCs emitted in the electronic terminal product and semiconductor devise were much higher than in the other two industries. Therefore, to ensure the safety of workers, measures for controlling VOCs should be strengthened.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |