Solid‐phase extraction using chloropropyl functionalized sol–gel hybrid sorbent for simultaneous determination of organophosphorus pesticides in selected fruit samples

2020 ◽  
Vol 43 (15) ◽  
pp. 3027-3035 ◽  
Author(s):  
Krishna Veni Veloo ◽  
Nur Amirah Syahirah Ibrahim
Keyword(s):  
Solid Phase Extraction ◽  
Simultaneous Determination ◽  
Solid Phase ◽  
Organophosphorus Pesticides ◽  
Sol Gel ◽  
Phase Extraction ◽  
Hybrid Sorbent ◽  
Fruit Samples

Selective and Simultaneous Solid Phase Extraction of Polar and Non–Polar Organophosphorus Pesticides Using Sol–Gel Hybrid Silica–Based Sorbent

2013 ◽  
Vol 62 (3) ◽  
Author(s):  
Wan Aini Wan Ibrahim ◽  
Wan Norfazilah Wan Ismail ◽  
Mohd Marsin Sanagi
Keyword(s):  
Solid Phase Extraction ◽  
Water Samples ◽  
Extraction Efficiency ◽  
Limit Of Detection ◽  
Solid Phase ◽  
Organophosphorus Pesticides ◽  
Sol Gel ◽  
Phase Extraction ◽  
Hybrid Silica ◽  
Hybrid Sorbent

A new sol–gel hybrid silica–based sorbent, methyltrimethoxysilane–cyanopropyltriethoxysilane (MTMOS–CNPrTEOS) produced in our laboratory was used for highly selective and simultaneous solid phase extraction (SPE) of two polar organophosphorus pesticides (OPPs) and four non–polar OPPs from water samples. The two polar OPPs used as test analytes are dicrotophos and methamidophos while the four non–polar OPPs are diazinon, malathion, methidathion, and chlorpyrifos. Analysis of OPPs was performed using gas chromatography–mass spectrometry in scan mode. Extraction efficiency (based on peak area response) of the new sol–gel hybrid MTMOS–CNPrTEOS was superior to commercial C18 SPE sorbent. The new sorbent showed higher selectivity towards the polar dicrotophos and methamidophos and it was also able to simultaneously extract the four non–polar OPPs with higher extraction efficiency. The limit of detection at S/N=3 for the new sol–gel hybrid sorbent is 5–9× lower and similar accuracy for the six OPPs compared to commercial C18 SPE sorbent. The new sol–gel hybrid material showed high potential as an alternative sorbent material for solid phase extraction of OPPs of wide polarity. It was successfully applied to the selective and simultaneous extraction the six OPPs from tap water and lake water samples.

Magnetic graphene-based cyanopropyltriethoxysilane as an adsorbent for simultaneous determination of polar and non-polar organophosphorus pesticides in cow’s milk

RSC Advances ◽  
2016 ◽  
Vol 6 (30) ◽  
pp. 24853-24864 ◽  
Author(s):  
Hamid Rashidi Nodeh ◽  
Wan Aini Wan Ibrahim ◽  
Mohd Marsin Sanagi ◽  
Hassan Y. Aboul-Enein
Keyword(s):  
Magnetic Nanoparticles ◽  
Solid Phase Extraction ◽  
Simultaneous Determination ◽  
Solid Phase ◽  
Organophosphorus Pesticides ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Magnetic Graphene ◽  
Magnetic Solid

A new adsorbent based on magnetic nanoparticles (Fe3O4), graphene and cyanopropyltriethoxysilane was fabricated and applied to the magnetic solid phase extraction of organophosphorus pesticides.

Simultaneous determination of phenytoin and dextromethorphan in urine by solid-phase extraction and HPLC-DAD

2005 ◽  
Vol 28 (11) ◽  
pp. 1157-1162 ◽  
Author(s):  
Natale Alfredo Santagati ◽  
Roberto Gotti ◽  
Giuseppe Ronsisvalle
Keyword(s):  
Solid Phase Extraction ◽  
Simultaneous Determination ◽  
Solid Phase ◽  
Phase Extraction
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