我国合成洗涤剂的主要品种是直链烷基苯磺酸钠(LAS)。生产过程中普遍采用重量法或两相滴定法分析洗涤剂单体和成品中的有效成份,工厂排放水中痕量洗涤剂的测定则采用次甲基蓝比色法。近几年国际上陆续报导用阴离子洗涤剂选择性电极为指示电极,以电位滴定法测定阴离子洗涤剂的研究。虽然实用性的报导尚较少,但将为洗涤剂的分析提供一种简便而快速的途径。 The main variety of synthetic detergent in China is linear sodium alkyl benzene sulfonate (LAS). Gravimetric or two-phase titration is commonly used in the production process to analyze the active ingredients in the detergent monomer and the finished product. The determination of trace detergent in the discharged water of the factory adopts the methine blue colorimetric method. In recent years, the international community has reported the use of anionic detergent selective electrode as the indicator electrode, potentiometric titration anionic detergent research. Although there are few reports of practicality, it will provide a quick and easy way for the analysis of detergents.