An ionic liquid loaded magnetically confined polymeric mesoporous adsorbent for extraction of parabens from environmental and cosmetic samples. Issue 57 (19th July 2017)

• Record Type: Journal Article
• Authors: Md Yusoff, Masrudin; Raoov, Muggundha; Yahaya, Noorfatimah; Md Salleh, Noorashikin
• Is Part Of: RSC advances. Volume 7:Issue 57(2017)
• Page Start: 35832
• Page End: 35844
• Publication Date: 2017-07-19
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra06682a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Schematic illustration of MSPE procedure for paraben analysis using a new ionic liquid loaded magnetically confined polymeric mesoporous material. Abstract : An ionic liquid loaded magnetically confined polymeric mesoporous adsorbent based magnetic solid phase extraction (MSPE) procedure has been developed for the extraction and pre-concentration of parabens, namely methyl paraben (MP), ethyl paraben (EP), propyl paraben (PP) and butyl paraben (BP) from environmental and cosmetic samples. In this study, hydrophilic ionic liquids (ILs), 1-butyl-3-methylimidazolium chloride (BMIM-Cl) was loaded onto the surface of MNP grafted β-cyclodextrin polymer (MNP-βCD-TDI) to form a new ionic liquid based magnetic polymeric adsorbent (IL-MNP-βCD-TDI). This is a new approach for the extraction of parabens followed by high-performance liquid chromatography with diode-array detection (HPLC-DAD). The formation of IL-MNP-βCD-TDI was characterized by FT-IR, CHN, BET, SEM, TEM, VSM and XRD techniques and compared with native MNPs and MNP-βCD-TDI. Several variables were optimized thoroughly including the types of adsorbents used, concentration of ionic liquid loaded, amount of adsorbent, extraction and desorption time, types and volumes of desorption solvent, sample pH, ionic strength, and sample volume. Under-optimized conditions, excellent linearity was achieved in the range of 0.3–500.0 μg L −1 for MP and EP, and 0.1–500.0 μg L −1 for PP and BP, with a correlation coefficient of R 2 > 0.999. High sensitivity with limits of detection (LODs: 0.02 to 0.09 μg L −1 ) and quantification (LOQs: 0.05 to 0.28 μg L −1 ), and good recoveries (80.3–117.3%) were obtained with satisfactory relative standard deviations (RSDs: 1.1–14.9%). The developed material (IL-MNP-βCD-TDI) proved to be a simple and effective alternative adsorbent for the extraction of parabens from various types of environmental water samples and cosmetic products.