It is found that there is a close relationship of the acid producing capacity and heavy metals release of tailings with the ore composition and floatation technology.

矿物组成、选矿工艺与尾矿的产酸能力、重金属的释放有明显的相关性。

youdao

The heavy metals forms of coal waste were analyzed by using of BCR method and the release characteristics of heavy metals were revealed by using of the United States TCLP, ASTM, and SPLP method.

利用改进的欧共体参比司（BCR）法分析了煤矸石重金属赋存形态，并利用美国TCLP、ASTM、SPLP等静态淋溶法和野外动态淋溶法研究了重金属的释放特性。

youdao

Have been tested for the release of heavy metals under artificial perspiration conditions.

已测试通过在人工汗液条件下释放的重金属。

youdao

Approximately 1, 100 such units at more than 450 existing power plants emit 48 tons of mercury into the air each year, with 11 tons of that deposited on to U.S. soil and waters, says EPA. Those plants also release arsenic, lead and other heavy metals, all of which are considered hazardous and are therefore subject to clean air laws that require those facilities to use modern pollution controls.

FORBES: Coal Plants Belching Out Less Mercury