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Date Published: 26/08/2024
Online Published: 27/08/2024
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DOI: https://doi.org/10.54607/hcmue.js.21.7.4136(2024)
Issue
Vol. 21 No. 7 (2024)
Section
Articles
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Trần , H. P., Nguyễn , D. L., & Đào , H. X. T. (2024). APPLICATION OF BIS((TRIFLUOROMETHYL)SULFONYL)AMIDE COATED ONTO SILICA GEL AS SORBENT FOR EXTRACTION OF Cr3+, Ni2+, Mn2+, Cu2+ AND Cd2+ IN WATER SAMPLES. HCMUE Journal of Science, 21(7), 1190. https://doi.org/10.54607/hcmue.js.21.7.4136(2024)

APPLICATION OF BIS((TRIFLUOROMETHYL)SULFONYL)AMIDE COATED ONTO SILICA GEL AS SORBENT FOR EXTRACTION OF Cr3+, Ni2+, Mn2+, Cu2+ AND Cd2+ IN WATER SAMPLES

Hoàng Phương Trần , Diệu Linh Nguyễn , Huỳnh Xuân Thủy Đào

Main Article Content

Abstract

In this study, 3-alkyl-1-vinyl-1H-imidazol-3-ium bis((trifluoromethyl)sulfonyl)amide (XT1, XT2) and 1,8-diazabicyclo[5.4.0]undec-7-enium bis((trifluoromethyl)sulfonyl)amide (XT3) ionic liquid modified onto silica gel was successfully prepared and characterized by FT-IR, TGA, SEM-EDX, and BET methods. Following the experiments, SiO2-XT3 exhibited a good recovery efficiency for five heavy metal ions including Cr3+, Ni2+, Mn2+, Cu2+, and Cd2+ with recoveries ranging from 79 – 104% at pH 8.5 with 1 mL of 1 M HNO3/H2O elution solvent and high enrichment factors for each cation. Under optimized conditions, SiO2-XT3 was utilized to analyze heavy metal ions in tap water with a limit of quantification (LOQ) ranging from 1.95 - 4.27 µg/L and good repeatability (RSD <6%), meeting AOAC standards.

 

Keywords

ionic liquid, heavy metal, solid-phase extraction, silica gel

Article Details

Author Biography

Hoàng Phương Trần,

Hóa Hữu cơ

References

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