Masadome Takashi, Akatsu Motoo
Department of Applied Chemistry, Faculty of Engineering, Shibaura Institute of Technology.
Anal Sci. 2008 Jun;24(6):809-12. doi: 10.2116/analsci.24.809.
An optical sensor for the detection of anionic surfactants was developed. The optical sensing membrane is a 2-nitrophenyloctyl ether-plasticized poly(vinyl chloride) membrane incorporating a lactone-form Rhodamine B (L-RB). The response of the optical membrane to anionic surfactants was a result of the ion-pair coextraction of an anionic surfactant and a proton into the PVC membrane. The L-RB forms an ion associate with the extracted anionic surfactant; simultaneously, the formed L-RB ion associate is accompanied by a spectral change. Namely, the extracted anionic surfactant changes the color of the membrane from light pink to dark pink (absorption maximum; 558 nm). The optical membrane responds to anionic surfactants, such as dodecylbenzenesulfonate, dodecylsulfate and di-2-ethylhexyl sulfosuccinate in the concentration range from 1 to 50 microM.
开发了一种用于检测阴离子表面活性剂的光学传感器。光学传感膜是一种用2-硝基苯基辛基醚增塑的聚氯乙烯膜，其中包含内酯形式的罗丹明B（L-RB）。光学膜对阴离子表面活性剂的响应是由于阴离子表面活性剂和质子通过离子对共萃取进入PVC膜。L-RB与萃取的阴离子表面活性剂形成离子缔合物；同时，形成的L-RB离子缔合物伴随着光谱变化。也就是说，萃取的阴离子表面活性剂使膜的颜色从浅粉色变为深粉色（最大吸收波长为558nm）。该光学膜对十二烷基苯磺酸盐、十二烷基硫酸盐和二（2-乙基己基）磺基琥珀酸盐等阴离子表面活性剂的响应浓度范围为1至50μM。
