The key pollution indicators are ammonia nitrogen, petroleum, potassiumpermanganateindex and volatile phenol.
主要污染指标是氨氮、石油类、高锰酸盐指数、挥发酚。
2
This article discusses the acidic potassiumpermanganate method of permanganate index from the following aspects: heating time, titrate temperature and titrate speed, end point of titration.
前言：文章对高锰酸盐指数加热时间、滴定温度、速度、滴定终点的控制进行了探讨。
3
The uncertainty of measurement was evaluated for the determination of permanganateindex of water by the method of GB 11892-1989, the acidic potassiumpermanganate method.