[RETRACTED ARTICLE] ชุดทดสอบครัยโอเจลสำหรับสารฟอกขาว

Abstract

This article has been retracted at the request of the Editor-in-chief

A sensor for determination of sodium sulfite using a cryogel entrapped 5,5-dithiobis-2-nitrobenzoic acid (DTNB) was developed. This sensor is based on the chemical reaction between sodium sulfite and
DTNB reagent yielding a yellow product of 5-mercapto-2-nitrobenzoate which can be easily observed by naked-eyes and imaged using the document scanner. The intensity of the color increased relatively to sodium sulfite concentration which can be quantified by Image J software. The sensor provided a wide linear
dynamic range between 2.5 and 30.0 mg/L (r = 0.9935) with a detection limit of 1.96±0.07 mg/L. This kit can be kept at 4°C at least 1 month. The developed fabrication of the kit provided a good kit-kit reproducibility
(n = 6) with a relative standard deviation (RSD) of 1.87%. When applied for the analysis of sodium sulfite in instant food products. The appealing performance of this sensor indicated that it has great potential for both qualitative and quantitative detection of sodium sulfite.