Premium
Magnetic iron(III)‐based framework composites for the magnetic solid‐phase extraction of fungicides from environmental water samples
Author(s) -
Huang YanFeng,
Liu QiaoHuan,
Li Kang,
Li Ying,
Chang Na
Publication year - 2018
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201700927
Subject(s) - tebuconazole , extraction (chemistry) , solid phase extraction , elution , myclobutanil , chemistry , desorption , detection limit , analytical chemistry (journal) , fungicide , nuclear chemistry , chromatography , materials science , adsorption , botany , organic chemistry , biology
Abstract We adopted a facile hydrofluoric acid‐free hydro‐/solvothermal method for the preparation of four magnetic iron(III)‐based framework composites (MIL‐101@Fe 3 O 4 ‐COOH, MIL‐101‐NH 2 @Fe 3 O 4 ‐COOH, MIL‐53@Fe 3 O 4 ‐COOH, and MIL‐53‐NH 2 @Fe 3 O 4 ‐COOH). The obtained four magnetic iron(III)‐based framework composites were applied to magnetic separation and enrichment of the fungicides (prochloraz, myclobutanil, tebuconazole, and iprodione) from environmental samples before high‐performance liquid chromatographic analysis. MIL‐101‐NH 2 @Fe 3 O 4 ‐COOH showed more remarkable pre‐concentration ability for the fungicides as compared to the other three magnetic iron(III)‐based framework composites. The extraction parameters affecting enrichment efficiency including extraction time, sample pH, elution time, and the desorption solvent were investigated and optimized. Under the optimized conditions, the standard curve of correlation coefficients were all above 0.991, the limits of detection were 0.04–0.4 μg/L, and the relative standard deviations were below 10.2%. The recoveries of two real water samples ranged from 71.1–99.1% at the low spiking level (30 μg/L). Therefore, the MIL‐101‐NH 2 @Fe 3 O 4 ‐COOH composites are attractive for the rapid and efficient extraction of fungicides from environmental water samples.