矿区煤矸石对周围农田玉米作物污染研究

文章通过对比焦作矿区演马矿矸石堆放场新鲜矸石和风化矸石中重金属和有机污染物质量分数,说明矸石中有毒有害物质在自然因素下会迁移或淋滤出来。对矸石堆周围农田中玉米进行重金属和苯并(a)芘质量分数检测,结果说明,矸石堆周围农田玉米中Pb、Cu、Zn、苯并(a)芘检出率均为100%,Cr为97.11%;检测物质均有超标,其中Pb超标率高达78.26%,苯并(a)芘达15.56%;大量的煤矸石随意堆放在矿区四周,不仅破坏周围生态环境,也会造成二次资源的浪费,应加强煤炭行业清洁生产和循环经济的推行工作。

Study of polluted maize near a coal gangue dump

The coal gangue samples(fresh and weathered) collected from gangue hills in the Jiaozuo mining area were studied,and the data show that toxic and harmful substances leached out under natural conditions.Then,the content of heavy metals and benzo(a)pyrene in maize around the gangue hills was detected,and the results were as followed: the detection rates of lead,zinc,benzo(a)pyrene were 100%,and that of chromium was 97.11%.They all exceeded the national hygienic standards of food,while the exceeding rate of lead was 78.26% and that of benzo(a)pyrene 15.56%.Large amounts of gangue around the coal mines not only undermine the surrounding ecological environment but also waste the secondary resources,so it is necessary to strengthen the implementation of clean production and cyclic economy in coal mining enterprises.