New Potentiometric Carbon Paste Electrode for Determination of Reactive Yellow 160 Dye Concentration in Textile Wastewater

Reactive Yellow 160 (RY 160) dye in real samples was determined by a new modified carbon paste electrode based on RY-Alkyldimethylbezylammoniumchloride as a chemical modifier. The construction, performance, and applications of RY 160 dye carbon paste electrode are described. The best performance was exhibited by the electrode having the paste containing 0.5 wt% ion-exchangers (RY 160), 51 wt% graphite, and 48.5 wt% tributylphosphate. The modified electrode showed a near-Nernstian slope of 14.6±0.5 mV over the concentration range of 4.5×10
^-7
-1.0×10
^-2
M with the limit of detection 3.1×10
^-7
over the pH range 3.7-8.1. The proposed sensor revealed good selectivities over a wide variety of anions.