某火力发电厂周围小麦受SO2污染调查

对某火力发电厂排放SO2导致其周围小麦受污染的突发性事故进行了调查。通过实地勘察小麦的受害症状，发现小麦呈典型的硫氧化物危害和硫酸雾腐蚀特征；小麦生物学性状和产量调查结果表明，污染区与对照区小麦无论株高、茎粗、穗长均无显著差异。而小麦的产量已受到影响，与对照区相比差异极显著；污染区小麦叶片全硫量和水溶性硫测定结果表明，全硫量均值为0．759％，高出对照区全硫含量均值0．651％的17％，经t检验差异显著；水溶性硫含量均值0．64％，高出对照区水溶性硫含量均值0．52％的23％，经检验差异极显著，表明污染区小麦受害确系SO2所致；分析气象条件认为污染区小麦是在低气压、高湿度、低风速、偏西风和稳定天气频率偏高的状况下受到污染的。

Investigation aboutthe SO 2 Pollution for W heat Around A Thermo-electric Power Station

To investigate the pollution accident which caused the SO2 pollution to wheat around a thermo - electric power station. The study indicated that wheat was harmed by oxides of sulfur and sulfuric acid fume. Although the biological characteristic of wheat in pollution area and control plot had no significant difference, the output of wheat in pollution area decreased and had significant difference with control plot. In pollution area, the concentration of total sulfur content was 0. 759% , and 17% higher than control plot, t - test difference was significant; the concentration of water solubility sulfur content was 0.64% , and 23% higher than control plot, t-test difference was significant. There data indicate that the pollution was caused by SO2.