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Interaction of Pesticides with Clean-up Agents during QuEChERS Dispersive-SPE Clean-up

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Title Interaction of Pesticides with Clean-up Agents during QuEChERS Dispersive-SPE Clean-up
 
Creator Tippannanavar, Madhu
Banerjee, Tirthankar
Shekhar, Sumit
Talaviya, Harshang
Sahu, Sudama
Narayanan, Neethu
Gupta, Suman
Singh, Anupama
 
Subject Anhydrous MgSO4
C-18
GCB
Pesticides
PSA
 
Description 1041-1054
A method was developed using liquid chromatography tandem mass spectroscopy for the identification and quantification
of multi residues of pesticides. The present study is first of this kind, destined purely to understand the interaction between the
clean-up agents with 103 pesticides. The QuEChERS clean-up, employing most commonly used clean-up agents like
anhyd.MgSO4, PSA, C-18 and GCB in twelve combinations, was performed to assess their adsorption behavior with the
pesticides. Recovery studies at 1μg∙mL−1 showed that anhyd.MgSO4 gave acceptable recovery for 100 pesticides (97.08%) in
treatment T1. The PSA adsorbed some polar and acidic pesticides onto it and gave acceptable recovery for < 90% pesticides in
T2 to T5 and C-18 with anhyd.MgSO4 & varying amount of PSA (T6, T7) gave a lower, but acceptable recovery of 83.49%
pesticides. GCB with anhyd.MgSO4 & varying amount of PSA (T8, T9), adsorbed some planar pesticides like carbendazim,
tricyclazole and gave a lower, but acceptable recovery for 74.75 – 77.66% pesticides. In T10 to T12, when all the adsorbents
were used, adsorption of polar, acidic and planar pesticides (25.24%) was observed while rest of the pesticides (74.75%) gave
acceptable recovery. The method also satisfied the single laboratory validation criteria for linearity, specificity, accuracy and
precision.
 
Date 2023-10-06T06:32:05Z
2023-10-06T06:32:05Z
2023-10
 
Type Article
 
Identifier 0022-4456 (Print); 0975-1084 (Online)
http://nopr.niscpr.res.in/handle/123456789/62710
https://doi.org/10.56042/jsir.v82i10.3079
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source JSIR Vol.82(10) [October 2023]