【摘要】 本文采用磷钨酸比色法测定显影液中微量的米吐尔和对苯二酚,试验了用加热分解法和氯化汞掩蔽法消除亚硫酸钠的干扰,确定了分析条件,并考查了分析的准确度,该方法适用于经活性炭净化后排放的黑白显影废水的水质检查。更多还原

【Abstract】 In this paper, the phospho-tungstic acid colorimetric method has been adopted to determine the micro hydroquinone and metol in the wastewater of black-white developer. It was tested to eliminate the inference of sodium sulfite by means of heating break-up of analyses and mercury chloride masking. The conditions were set and the accuracy was examined. This method is adoptable to control the quality of the waste water in the black-white developer drained after being purified with active carbon.更多还原