Mathematical modeling of a Nafion membrane based optode incorporating 1-(2′-pyridylazo)-2-naphthol under flow injection conditions

Development of an Optode Detector for Determination of Anionic Surfactants by Flow Injection Analysis

“…In several FIA systems based on optode detectors, the onechannel FIA system, in which a sample solution is introduced into a flow of a regeneration solution (RS), is used. [21][22][23][24][25][26][27][28] Here, the more standard two-channel FIA system is adopted. Figure 1 depicts the two-channel FIA system, which is made up of two syringe pumps (YSP-101, YMC, Kyoto, Japan), a sample injector, a homemade optode detector, a light source (a tungstenhalogen lamp, LS-1, Ocean Optics, USA), and a fiber-optic spectrophotometer (USB 4000, Ocean Optics, USA) connected to a personal computer (PC).…”

“…In addition, many toxic organic solvents such as chloroform are often used in the methods. Considering the above, there is a need for a simpler method based on chemical sensors such as ion selective electrodes (ISEs), [9][10][11][12][13][14][15][16] optical sensors (optodes) [17][18][19][20][21][22][23][24][25][26][27][28] and fiber optic sensors 29,30 to measure ASs without the use of toxic organic solvents.…”

“…[31][32][33][34][35][36] Several FIA systems based on optode detectors have been reported. [21][22][23][24][25][26][27][28] Therefore, the combination of an FIA system and the optode detector based on L-RB is considered to be a very effective analytical method for determining AS.…”