Ionic liquid-based cloud point extraction five organophosphorus pesticides in coarse cereals

2022 ◽  
pp. 132161
Author(s):  
Liyuan Zhang ◽  
Runzhong Yu ◽  
Meng Zhou ◽  
Changyuan Wang ◽  
Dongjie Zhang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Cloud Point ◽  
Cloud Point Extraction ◽  
Organophosphorus Pesticides

Analysis of Six Organophosphorus Pesticide Residues in Apples and Pears Using Cloud-point Extraction Coupled with HPLC-UV

2014 ◽  
Vol 97 (4) ◽  
pp. 1202-1205 ◽  
Author(s):  
Lijin Zhang ◽  
Fang Chen ◽  
Wenhuan Zhang ◽  
Canping Pan
Keyword(s):  
Cloud Point ◽  
Extraction Method ◽  
Cloud Point Extraction ◽  
Organophosphorus Pesticides ◽  
Extraction Procedure ◽  
Organophosphorus Pesticide ◽  
Equilibrium Temperature ◽  
Equilibrium Time ◽  
Temperature Equilibrium ◽  
Triton X

Abstract A cloud-point extraction (CPE) method with Triton X-114 has been developed for analysis of six organophosphorus pesticides (OPPs) in apples and pears. In this CPE procedure, the effects of the surfactant volume, mass of sodium chloride, equilibrium temperature, equilibrium time, and pH on the extraction procedure were investigated. Under the optimal CPE conditions, the analytes were enriched 20-fold and the LODs dropped to 0.44–5.20 μg/kg. Furthermore, the proposed extraction method was validated by the correlation coefficient (R2) of the calibration curve, repeatability (RSD, n = 6), and fortified recoveries, which were 0.9967–0.9993, 2.7–6.5, and 74.7–104.5%, respectively. Based on these results, it could be concluded that the proposed CPE method with Triton X-114 was suitable for the effective extraction and enrichment of OPP residues in the apple and pear samples.

scholarly journals Ionic liquid-based cloud-point extraction of quercetin for its sensitive HPLC–UV determination in juice samples

2017 ◽  
Vol 29 (4) ◽  
pp. 493-496 ◽  
Author(s):  
Fahimeh Rasoolzadeh ◽  
Payman Hashemi ◽  
Fariba Nazari Serenjeh
Keyword(s):  
Ionic Liquid ◽  
Cloud Point ◽  
Cloud Point Extraction
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