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Digital camera analysis of dichlorvos by phloroglucinol and quantitate with standard colour chart in environmental water matrices – an approach

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Title Digital camera analysis of dichlorvos by phloroglucinol and quantitate with standard colour chart in environmental water matrices – an approach
 
Creator Baskaran, Kamesh Viswanathan
 
Subject DDVP
Colour chart
Phloroglucinol
Semi-quantitative
Digital camera analysis
 
Description 959-965
Dichlorvos (DDVP) analysis using visible spectrophotometer, gas chromatography-mass spectrometry and liquid
chromatography mass spectrometry has been studied extensively. The major drawback of all the method is requirement of
standardisation, expensive and maintenance nature of instrument involvement. Since, many governments has banned the use
of DDVP, standardisation is quite challenging with single point standard method. In this study, using digital camera based
colour analysis for DDVP is carried out to develop one-time multistandard colour chart. The analysis is carried out by
alkaline degradation of DDVP to dichloroacetylaldehyde to react with phloroglucinol and producing distinct colour
gradients from pale purple to dark brown. The colour chart is able to quantitate the limit of detection and limit of
quantification of 6 μg/mL and 20 μg/mL, respectively. The study is further experimented with real-time ground water with
non-spiked and spiked DDVP samples for pre-concentration effect. The 1:1 linear relation is found with absorbance based
spectrophotometer detection and digital camera image analysis to quantify around ppb level. This shows the colour analysis
by human naked eye judgement is possible at certain level as semi-quantitate by strategical approach. In this paper, we have
used the colour chart based digital camera detection of DDVP, which will be a viable alternate approach for analysing the
environment samples.
 
Date 2021-07-30T04:53:44Z
2021-07-30T04:53:44Z
2021-07
 
Type Article
 
Identifier 0975-0975(Online); 0376-4710(Print)
http://nopr.niscair.res.in/handle/123456789/57790
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJC-A Vol.60A(07) [July 2021]