Surfactant-modified Zn/Al-layered double hydroxides for efficient extraction of alkyl phenols from aqueous samples

Aman GROVER, Ramandeep KAUR, Irshad MOHIUDDIN, Ashok K. MALIK, Jatinder Singh AULAKH, Yiu Fai TSANG, Ki-Hyun KIM

Research output: Contribution to journalArticles

4 Citations (Scopus)

Abstract

Zn/Al-layered double hydroxides (LDHs) modified by sodium dodecylsulfate (SDS) were synthesized as a hydrophobic organic sorbent via urea hydrolysis. LDHs were applied as adsorbent for solid phase extraction (SPE) analysis to determine three alkylphenols (namely, p-tert-amylphenol (PTAP), p-cumylphenol (PCP), and p-n-octylphenol (POP)) in water samples using gas chromatography-mass spectrometry. The extraction efficiency was optimized by adjusting key variables of eluent volume, eluent type, sample flow rate, adsorbent amount, pH, and the effect of salt addition. Under the optimal conditions, APs showed excellent linearity (1–250 ng/mL: R² > 0.99) and reproducibility (relative standard deviation: <5%). The detection limits for PTAP, PCP, and POP were 19, 16, and 33 pg/mL, respectively. LDHs based SPE method offered high recovery for aqueous samples (e.g., 83.2–99.46%) with enhanced reusability (e.g., up to 10 cycles). The feasibility of the developed method has thus been validated for quantitation of three alkyl phenols (i.e., PTAP, PCP, and POP) in aqueous environmental samples with high sensitivity and good stability. Copyright © 2019 Elsevier Inc. All rights reserved.
Original languageEnglish
Article number108605
JournalEnvironmental Research
Volume177
Early online dateJul 2019
DOIs
Publication statusPublished - Oct 2019

Citation

Grover, A., Kaur, R., Mohiuddin, I., Malik, A. K., Aulakh, J. S., Tsang, Y. F., & Kim, K.-H. (2019). Surfactant-modified Zn/Al-layered double hydroxides for efficient extraction of alkyl phenols from aqueous samples. Environmental Research, 177. Retrieved from https://doi.org/10.1016/j.envres.2019.108605

Keywords

  • Layered double hydroxide
  • Alkyl phenols
  • Solid phase extraction
  • GC-MS
  • Aqueous samples

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