PMID- 31277026
OWN - NLM
STAT- MEDLINE
DCOM- 20191025
LR  - 20191025
IS  - 1873-6424 (Electronic)
IS  - 0269-7491 (Linking)
VI  - 252
IP  - Pt B
DP  - 2019 Sep
TI  - Magnetic metal-organic frameworks nanocomposites for negligible-depletion 
      solid-phase extraction of freely dissolved polyaromatic hydrocarbons.
PG  - 1574-1581
LID - S0269-7491(18)35221-7 [pii]
LID - 10.1016/j.envpol.2019.04.137 [doi]
AB  - The bioavailability of a pollutant is usually evaluated based on its freely 
      dissolved concentration (C(free)), which can be measured by negligible-depletion 
      equilibrium extraction that is commonly suffered from long equilibration time. 
      Herein, metal-organic framework (MOF) composites (Fe(3)O(4)@MIL-101), consists of 
      a magnetic Fe(3)O(4) core and a MIL-101 (Cr) MOF shell, is developed as sorbents 
      for negligible-depletion magnetic solid-phase extraction (nd-MSPE) of freely 
      dissolved polyaromatic hydrocarbons (PAHs) in environmental waters. The freely 
      dissolved PAHs in 1000 mL water samples are extracted with 1.5 mg MOF composites, 
      and desorbed with 0.9 mL of acetonitrile under sonication for 5 min. The MOF 
      composites exclude the extraction of dissolved organic matter (DOM) and 
      DOM-associated PAHs by size exclusion. Additionally, the combined interactions 
      (hydrophobic, pi-pi and pi-complexation) between PAHs and composites markedly 
      reduced the extraction equilibration time to < 60 min for all the studied PAHs 
      with logK(OW) up to 5.74. Moreover, the porous coordination polymers property of 
      the MOFs makes the proposed nd-MSPE based on the partitioning of PAHs and thus 
      excludes the competitive adsorption of coexisting substances. The developed 
      nd-MSPE approach provides low detection limits (0.08-0.82 ng L(-1)), wide linear 
      range (1-1000 ng L(-1)) and high precision (relative standard deviations (RSDs) 
      (3.3-4.8%) in determining C(free) of PAHs. The measured C(free) of PAHs in 
      environmental waters are in good agreement with that of verified method. Given 
      the large diversity in structure and pore size of MOFs, various magnetic MOFs can 
      be fabricated for task-specific nd-MSPE of analytes, presenting a prospective 
      strategy for high-efficiency measuring C(free) of contaminants in environments.
CI  - Copyright (c) 2019 Elsevier Ltd. All rights reserved.
FAU - Li, Yingjie
AU  - Li Y
AD  - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research 
      Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P. O. Box 
      2871, Beijing, 100085, China; College of Chemistry and Chemical Engineering, 
      Henan Polytechnic University, Jiaozuo, 454000, China.
FAU - Zhou, Xiaoxia
AU  - Zhou X
AD  - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research 
      Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P. O. Box 
      2871, Beijing, 100085, China.
FAU - Dong, Lijie
AU  - Dong L
AD  - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research 
      Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P. O. Box 
      2871, Beijing, 100085, China.
FAU - Lai, Yujian
AU  - Lai Y
AD  - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research 
      Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P. O. Box 
      2871, Beijing, 100085, China.
FAU - Li, Shasha
AU  - Li S
AD  - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research 
      Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P. O. Box 
      2871, Beijing, 100085, China.
FAU - Liu, Rui
AU  - Liu R
AD  - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research 
      Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P. O. Box 
      2871, Beijing, 100085, China.
FAU - Liu, Jingfu
AU  - Liu J
AD  - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research 
      Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P. O. Box 
      2871, Beijing, 100085, China. Electronic address: jfliu@rcees.ac.cn.
LA  - eng
PT  - Journal Article
DEP - 20190430
PL  - England
TA  - Environ Pollut
JT  - Environmental pollution (Barking, Essex : 1987)
JID - 8804476
RN  - 0 (MIL-101)
RN  - 0 (Magnetite Nanoparticles)
RN  - 0 (Metal-Organic Frameworks)
RN  - 0 (Polycyclic Aromatic Hydrocarbons)
RN  - 0 (Water Pollutants, Chemical)
SB  - IM
MH  - Adsorption
MH  - Hydrophobic and Hydrophilic Interactions
MH  - Limit of Detection
MH  - Magnetite Nanoparticles/*chemistry
MH  - Metal-Organic Frameworks/*chemistry
MH  - Nanocomposites/*chemistry
MH  - Polycyclic Aromatic Hydrocarbons/*analysis
MH  - Solid Phase Extraction/*methods
MH  - Solubility
MH  - Water Pollutants, Chemical/*analysis
OTO - NOTNLM
OT  - Environmental pollutants
OT  - Freely dissolved concentration
OT  - Metal-organic frameworks
OT  - Negligible depletion extraction
OT  - Restricted-access
EDAT- 2019/07/06 06:00
MHDA- 2019/10/28 06:00
CRDT- 2019/07/06 06:00
PHST- 2018/11/24 00:00 [received]
PHST- 2019/04/07 00:00 [revised]
PHST- 2019/04/29 00:00 [accepted]
PHST- 2019/07/06 06:00 [pubmed]
PHST- 2019/10/28 06:00 [medline]
PHST- 2019/07/06 06:00 [entrez]
AID - S0269-7491(18)35221-7 [pii]
AID - 10.1016/j.envpol.2019.04.137 [doi]
PST - ppublish
SO  - Environ Pollut. 2019 Sep;252(Pt B):1574-1581. doi: 10.1016/j.envpol.2019.04.137. 
      Epub 2019 Apr 30.