DPD比色法测定电解海水产生的有效氯浓度

Determination of Effective Chlorine Density by DPD Sepctrophotometric Method in Electrolyzed Sawater

论文是用DPD（N，N-二乙基-1．4-苯二胺）比色法测定电解海水中的有效氯浓度，并将测定结果与碘量滴定法测定有效氯浓度相比较。此外，对该方法在海水中的实验条件进行了试验。结果得出，在海水环境下，DPD比色法在常温下，波长为550nm．pH值6．5左右，显色后10min内测定。在海水中用此方法测定有效氯浓度的范围在0～2mg／L，误差在5％以下。

DPD （N, N-diethyl-1,4phenylenediamine） Sepctrophotometric method was used to determine the effective chlorine density of electrolyzed seawater, and the results of DPD method was compared with that of iodic titration. The conditions of the experiment are also studied in seawater, in seawater, effective chlorine density can be determined accurately in 0-2mg/L , the errors less than 5%. In normal temperature The optimum of wavelength is 550 nm, the pH value is about 6. 5. The sample of reaction is determined in 10 minute.