Abstract:

In order to further clarify the deposition law of coal dust and its effects on antioxidant system of the plants, effects of coal dust from the coal storage area of a coke oven plant in Taiyuan on antioxidant system of the surrounding maize within 400 m range were investigated, under outdoor coal dust was regularly collected and indoor plant physiology index analysis. Results indicated quantities of total dust and coal dust in the distance apparently decreased with away from the coal storage area. Moreover, the activities of the total antioxidant capacity (T-AOC), superoxide dismutase (SOD), catalase (CAT) and malondialdehyde (MDA) were significantly decreased in the leaves of maize seedlings, especially SOD activity was more sensitive. It suggested that coal dust could promote the antioxidant system in maize, increase oxidation indexs such as T-AOC, SOD and CAT, and to some extent reduce the damage to maize.