论文部分内容阅读
本文对塑胶跑道的构成、发展简史和相关污染及污染修复问题进行了的一些简单介绍。抽查了呼和浩特市某小学的塑胶跑道样本,通过原子吸收光谱法测定了该小学塑胶跑道中可溶性重金属铅、镉、铬的含量,对简单分析了搅拌时间及酸度对可溶性重金属铅、镉、铬在酸性条件下可溶进行了简单分析,其他条件相同时,可溶性的溶出随搅拌时间的增长先增大后保持恒定,搅拌时间为60min时可得最大溶出;随酸度的增大先增大后保持稳定,并得出加入的盐酸量为75m L时可得最大溶出。
This article gives a brief introduction to the composition of the plastic track, a brief history of development and related pollution and pollution remediation issues. A sample of a plastic track in a primary school of Hohhot was spot checked and the contents of soluble heavy metals such as lead, cadmium and chromium in the plastic track of the primary school were measured by atomic absorption spectrometry. The effects of stirring time and acidity on the contents of soluble heavy metals such as lead, cadmium and chromium Under the condition of the same acidic condition, the dissolution was analyzed briefly. When the other conditions were the same, the dissolution dissolution increased first and then kept constant with stirring time, and the maximum dissolution was obtained when the stirring time was 60min. Stable, and found that the amount of hydrochloric acid added to 75m L can be obtained when the maximum dissolution.