Worawit Wongniramaikul. Biopolymer test kit for colorimetric detection of chlorine in water. (). King Mongkut's University of Technology North Bangkok. Central Library. : , 2020.
Biopolymer test kit for colorimetric detection of chlorine in water
Abstract:
The objective of the study was to fabricate the colorimetric sensor of biodegradable material for free chlorine determination. The colorimetric reagent of N,N-diethyl-p-phenylenediamine sulfate (DPD) was entrapped in the hybrid biopolymer film of agar (AG) and tapioca starch (TAS) and it was coated on the plastic micro-PCR tube. The pink product obtained from the reaction between DPD reagent and chlorine could indicate the presence of residual chlorine in the water. The condition for the sensor film synthesis was optimized by the digital image analytical technique with mobile phone application. The results were showed that Red-Green-Blue (RGB) intensity of reaction product was not changed, even though the DPD reagent was added over 0.2 g/mL. The addition of 16 g/L EDTA in the buffer solution could reduce the interference effect from some metals, especially Fe3+, contaminated in water sample. The water pH could be maintained for best analysis at the volume ratio between buffer and DPD solution of 0.5:1. The incubation of colorimetric film at 60 °C and 60 minutes provided the best sensor performance with fast analysis of 1 min reaction time. This could promote the use of biopolymer test kit as the environmentally-friendly analytical method for chlorine in water
King Mongkut's University of Technology North Bangkok. Central Library
Address:
BANGKOK
Email:
library@kmutnb.ac.th
Created:
2020
Modified:
2021-05-07
Issued:
2021-05-07
บทความ/Article
application/pdf
BibliograpyCitation :
In Thai Institute of Chemical Engineering and Applied Chemistry. The 29th Thai Institute of Chemical Engineering and Applied Chemistry Conference (TiChE 2020) (pp.416-426). Bangkok : Chulalongkorn University