水质 彩色显影剂总量的测定 169成色剂分光光度法(暂行)水质 彩色显影剂总量的测定 169成色剂分光光度法(暂行)Water quality.Determination of the total amount of the color developing agent.169 Coupler spectrophotometry
水质 显影剂及其氧化物总量的测定 碘-淀粉分光光度法(暂行)
Water quality.Determination of the total amount of the developing agent and their oxides.Iodine-starch spectrophotometry