Water quality-Determination of the chemical oxygen demand-Dichromate method (HJ 828-2017 instead of GB11914-89) was tested by a new standard method. The analysis method of uncertainty sources, taking into account the measuring instrument, standard solution, environmental conditions and measurement repeatability of COD measurement uncertainty influence, through specific experimental results of the determination of some chemical oxygen demand: were 212 mg/L, the synthesis uncertainty was 2. 25 mg/L and extension uncertainty was 4. 50 mg/L.
NETL
NSTL
万方数据
维普
