In-situ layer-by-layer synthesized TpPa-1 COF solid-phase microextraction fiber for detecting sex hormones in serum

2020 ◽  
Vol 1137 ◽  
pp. 28-36
Author(s):  
Jiating Zheng ◽  
Shuyao Huang ◽  
Yuanjun Tong ◽  
Songbo Wei ◽  
Guosheng Chen ◽  
...  
Keyword(s):  
Sex Hormones ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Layer By Layer

Trace analysis of organophosphorus pesticide residues in fruit juices and vegetables by an electrochemically fabricated solid-phase microextraction fiber coated with a layer-by-layer graphenized graphite/graphene oxide/polyaniline nanocomposite

2020 ◽  
Vol 12 (25) ◽  
pp. 3268-3276
Author(s):  
Sara Manafi Khoshmanesh ◽  
Hamed Hamishehkar ◽  
Habib Razmi
Keyword(s):  
Graphene Oxide ◽  
Trace Analysis ◽  
Pesticide Residues ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Organophosphorus Pesticide ◽  
Layer By Layer ◽  
Pencil Lead ◽  
Polyaniline Nanocomposite

A solid-phase microextraction pencil lead fiber coated with a layer-by-layer graphenized graphite/graphene oxide/polyaniline nanocomposite was made by an in situ electrochemical method for the trace analysis of organophosphorus pesticide residues.

Layer-by-layer coated molecular-imprinted solid-phase microextraction fibers for the determination of polar compounds in water samples

RSC Advances ◽  
2016 ◽  
Vol 6 (96) ◽  
pp. 94098-94104 ◽  
Author(s):  
Maosheng Zhang ◽  
Jiarong Huang
Keyword(s):  
Water Samples ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Polar Compounds ◽  
Selective Extraction ◽  
Layer By Layer ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

In this study, the selective extraction of polar compound in water samples was reported using molecular-imprinted solid-phase microextraction (MISPME) combined with dispersive liquid–liquid microextraction (DLLME) within situderivatization.

scholarly journals Ionic Liquid-modified NiTi Composite Nanosheets Coating for Efficient Solid Phase Microextraction of Octadecylamine in Brine

2019 ◽  
pp. 1-8
Author(s):  
Huiju Wang
Keyword(s):  
Ionic Liquid ◽  
Solid Phase Microextraction ◽  
Extraction Efficiency ◽  
Solid Phase ◽  
Correlation Coefficients ◽  
Fiber Coating ◽  
Relative Standard ◽  
Optimized Conditions ◽  
As Solid Phase

Ionic     liquid (IL), 1-dodecyl-3-methylimidazolium-3-hydroxy-2-naphthoate (C12mimHNC) was synthesized and coated on the surface of NiTi as solid phase microextractiom fiber coating for determination the octadecylamine in brine. Prior to modification with IL, the NiTi was hydrothermally treated for in-situ growth of titanium and nickel oxide composite nanosheets (TiO2/NiOCNSs). The TiO2/NiOCNSs fibers coating was oriented  around the NiTi  substrate and  presented  double-faced  open  access  sites,  which provided a desired support framework for the further modification with IL. The extraction performance of C12mimHNC-TiO2/NiOCNSs fiber coating was evaluated for       detection of octadecylamine (ODA) coupled to HPLC with UV detection. As a result, the C12mimHNC-TiO2/NiOCNSs fiber coating illustrated excellent adsorption and extraction capability for ODA. The main factors affected extraction efficiency were optimized. Under the optimized  conditions,  good  linearity was  obtained  in  the  range of  1-150  µg/L with correlation  coefficients  (r2)  above  0.985.  Limits of detection (LODs) for  the  developed method was 0.280 µg/L. The proposed method was first applied to extract the ODA in brine samples. Relative recoveries varied from 78.3% to 96.5% at spiking level of 15µg/L and 30 µg/L with the relative standard deviations (RSDs) less than 8.7%.

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