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Solid‐phase extraction with the metal–organic framework MIL ‐101( C r) combined with direct analysis in real time mass spectrometry for the fast analysis of triazine herbicides
Author(s) -
Li Xianjiang,
Xing Jiawei,
Chang Cuilan,
Wang Xin,
Bai Yu,
Yan Xiuping,
Liu Huwei
Publication year - 2014
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.201400151
Subject(s) - dart ion source , solid phase extraction , mass spectrometry , extraction (chemistry) , detection limit , triazine , chemistry , analyte , chromatography , desorption , sample preparation , dart , analytical chemistry (journal) , adsorption , ion , organic chemistry , electron ionization , computer science , polymer chemistry , programming language , ionization
MIL ‐101( C r) is an excellent metal–organic framework with high surface area and nanoscale cavities, making it promising in solid‐phase extraction. Herein, we used MIL ‐101( C r) as a solid‐phase extraction packing material combined with fast detection of direct analysis in real time mass spectrometry ( DART ‐ MS ) for the analysis of triazine herbicides. After systematic optimization of the operation parameters, including the gas temperature of DART , the moving speed of the 1D platform, solvent for desorption, amount of MIL ‐101(Cr) extraction time, eluent volume and salt concentration, this method can realize the simultaneous detection of five kinds of triazine herbicides. The limits of detection were 0.1∼0.2 ng/mL and the linear ranges covered more than two orders of magnitude with the quantitation limits of 0.5∼1 ng/mL. Moreover, the developed method has been applied for the analysis of lake water samples and the recoveries for spiked analytes were in the range of 85∼110%. These results showed that solid‐phase extraction with metal–organic frameworks is an efficient sample preparation approach for DART ‐ MS analysis and could find more applications in environmental analysis.