Development and optimization of chemometric assisted micro-cloud point extraction for preconcentration and separation of Eriochrome black T in water and wastewater samples

摘要

In this work, a new inexpensive and easy to use micro-cloud point extraction (MCPE) method is proposed for the extraction and preconcentration of Eriochrome black T (EBT) before spectrophotometric determination. To increase the extraction efficiency, the effecting factors on the MCPE procedure were investigated and optimized using the Taguchi design method and Response surface methodology (RSM). A second-order response surface model for micro-cloud point extraction of Eriochrome black T is developed to predict responses. Under optimum conditions, the calibration curve was linear in the range of 0.20-2.00 mg L-1 with a detection limit of 59 mu g L-1 for EBT.