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Publication
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| Title of Article |
Magnetic Molecularly Imprinted Polymer for the Selective Enrichment of Glyphosate, Glufosinate, and Aminomethylphosphonic Acid Prior to High-Performance Liquid Chromatography |
| Date of Acceptance |
30 September 2021 |
| Journal |
| Title of Journal |
ACS Omega |
| Standard |
SCOPUS |
| Institute of Journal |
ACS |
| ISBN/ISSN |
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| Volume |
2021 |
| Issue |
6 |
| Month |
October |
| Year of Publication |
2021 |
| Page |
27007−27016 |
| Abstract |
A novel mixed iron hydroxide molecularly imprinted polymer (MIH-MIP) was synthesized via polymerization using
mixed-valence iron hydroxide as a magnetic supporter, glyphosate as a template, acrylamide as a functional monomer, and ethylene
glycol dimethacrylate as a cross-linker. The resulting material was characterized and applied as a sorbent for the selective enrichment
of glyphosate, aminomethylphosphonic acid, and glufosinate by magnetic solid-phase extraction (MSPE) prior to high-performance
liquid chromatography. MIH-MIP possessed a high adsorption capacity in the range of 2.31−5.40 mg g−1 with good imprinting
factors ranging from 1.52 to 7.59. The Langmuir model proved that the recognition sites were distributed as a monolayer on the
surface of MIH-MIP. Scatchard analysis showed two types of binding sites on MIH-MIP. The kinetic characteristics of MIH-MIP
suggested that the binding process of all analytes fit well with the pseudosecond-order model. The developed methodology provides
good linearity in the range of 72.0−2000.0 μg L−1
. Low detection limits of 21.0−22.5 μg L−1 and enrichment factors of up to 18
were achieved. The precision in terms of relative standard deviations of the intra- and interday experiments was better than 7 and
9%, respectively. The applicability of the developed MSPE facilitates the accurate and efficient determination of water, soil, and
vegetable samples with satisfactory recoveries in the range of 86−118%. The results confirmed the suitability of the MIH-MIP
sorbent for selective extraction and quantification of glyphosate, aminomethylphosphonic acid, and glufosinate. |
| Keyword |
magnetic solid phase extraction; magnetic molecularly imprinted polymer; mixed iron hydroxide; glyphosate; aminomethylphosphonic acid; glufosinate |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
true |
| ใช้สำหรับสำเร็จการศึกษา |
ไม่เป็น |
| Attach file |
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| Citation |
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Journal Publication
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