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PM2.5 samples were collected from six types of industrial parks in the Guanzhong region of Shaanxi Province, including cement/concrete, brick/construction materials, forging/metallurgy, thermal power, chemical production, and glass/ceramics. The carbon fractions, water-soluble ions, elements, as well as oxidative potential (OP) of PM2.5samples were analyzed to investigate the emission characteristics of different industrial sources and the relationships between PM2.5 chemical components and OP. The results showed significant differences in PM2.5 concentrations among the industrial parks, with brick/construction materials presenting the highest level (95.2μg/m3). The OC/EC (organic carbon/elemental carbon) ratio in brick/construction materials (5.5) was higher than those in other industries. Cement and concrete industry exhibited the highest Ca2+ concentrations. Elemental analysis showed elevated proportions of V in metal forging. Correlation analysis demonstrated significant positive relationships between OP and inorganic ions (SO42-、NO3-、NH4+) as well as metallic elements (Ca, Al, Cd, Cu). This study provides a scientific basis for identifying the source markers across common industries and for assessing their impacts on atmospheric oxidation capacity and human health.
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| 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 |
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