PMID- 28283719
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180117
LR  - 20180117
IS  - 1618-2650 (Electronic)
IS  - 1618-2642 (Linking)
VI  - 409
IP  - 13
DP  - 2017 May
TI  - Facile preparation of hexadecyl-functionalized magnetic core-shell microsphere 
      for the extraction of polychlorinated biphenyls in environmental waters.
PG  - 3337-3346
LID - 10.1007/s00216-017-0278-x [doi]
AB  - Alkyl moieties which can retain target analytes due to their lipophilicity are 
      important in sample preparation. In this work, hexadecyl-functionalized magnetic 
      core-shell microspheres (Fe(3)O(4)@SiO(2)-C(16)) was successfully prepared by 
      one-pot sol-gel method and used for magnetic solid-phase extraction of 
      polychlorinated biphenyls (PCBs) in environmental water samples. Optimized 
      preparation method was achieved by altering the adding moment of 
      hexadecyl-silane. The resultant materials were systematically characterized by 
      scanning electron microscope, transmission electron microscope, Fourier transform 
      infrared spectroscopy, energy dispersive X-ray spectrometry, tensionmeter, and 
      vibrating sample magnetometer. The results demonstrated that the optimized 
      adsorbent exhibited core-shell structure, superparamagnetic (66 emu/g), and 
      extremely hydrophobic (water contact angle of 122 degrees ) properties. To evaluate the 
      extraction performance, the prepared material coupled with gas 
      chromatography-triple quadrupole mass spectrometry (GC-MS/MS) was applied to 
      determinate PCBs. The extraction conditions were optimized. Under the optimal 
      conditions, the proposed method showed a good linearity range of 1-100 ng L(-1) 
      with correlation coefficients (R) of 0.9989-0.9993. Based on a signal-to-noise 
      ratio of 3 and 10, the limits of detection (LODs) and limits of quantification 
      (LOQs) were in the range 0.14-0.27 and 0.39-0.91 ng L(-1), respectively. The 
      intra- and inter-day relative standard deviations (RSDs) were less than 9.06%. 
      The absolute recoveries of PCBs in spiked real water samples were in the range of 
      75.17 to 101.20%. Additionally, reusability and batch-to-batch reproducibility of 
      the resultant material were acceptable with RSDs less than 5.64 and 3.25%, 
      respectively. Graphical Abstract The synthesis procedure of 
      Fe(3)O(4)@SiO(2)-C(16) and determination of PCBs in water sample 129 x 50 mm 
      (300 x 300 DPI).
FAU - Fan, Yu-Han
AU  - Fan YH
AD  - State Key Laboratory of Biogeology and Environmental Geology, China University of 
      Geosciences, Wuhan, Hubei, 430074, China.
FAU - Zhang, Shou-Wen
AU  - Zhang SW
AD  - State Key Laboratory of Biogeology and Environmental Geology, China University of 
      Geosciences, Wuhan, Hubei, 430074, China.
FAU - Qin, Shi-Bin
AU  - Qin SB
AD  - School of Environmental Studies, China University of Geosciences, Wuhan, 430074, 
      China.
FAU - Li, Xiao-Shui
AU  - Li XS
AD  - State Key Laboratory of Biogeology and Environmental Geology, China University of 
      Geosciences, Wuhan, Hubei, 430074, China. xmlxsh@sina.com.
FAU - Zhang, Yuan
AU  - Zhang Y
AD  - State Key Laboratory of Biogeology and Environmental Geology, China University of 
      Geosciences, Wuhan, Hubei, 430074, China.
FAU - Qi, Shi-Hua
AU  - Qi SH
AD  - State Key Laboratory of Biogeology and Environmental Geology, China University of 
      Geosciences, Wuhan, Hubei, 430074, China. shihuaqi@cug.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20170310
PL  - Germany
TA  - Anal Bioanal Chem
JT  - Analytical and bioanalytical chemistry
JID - 101134327
OTO - NOTNLM
OT  - Gas chromatography-tandem mass spectrometry
OT  - Hexadecyl
OT  - Magnetic microsphere
OT  - Polychlorinated biphenyl
OT  - Water
EDAT- 2017/03/12 06:00
MHDA- 2017/03/12 06:01
CRDT- 2017/03/12 06:00
PHST- 2016/12/14 00:00 [received]
PHST- 2017/02/22 00:00 [accepted]
PHST- 2017/02/20 00:00 [revised]
PHST- 2017/03/12 06:00 [pubmed]
PHST- 2017/03/12 06:01 [medline]
PHST- 2017/03/12 06:00 [entrez]
AID - 10.1007/s00216-017-0278-x [pii]
AID - 10.1007/s00216-017-0278-x [doi]
PST - ppublish
SO  - Anal Bioanal Chem. 2017 May;409(13):3337-3346. doi: 10.1007/s00216-017-0278-x. 
      Epub 2017 Mar 10.