Electrochemical preparation of a poly(aniline-co-m-aminobenzoic acid)–ionic liquid composite coating for the head-space solid phase microextraction and analysis of aryl halides

2014 ◽  
Vol 6 (23) ◽  
pp. 9453-9458 ◽  
Author(s):  
Youhong Ai ◽  
Faqiong Zhao ◽  
Baizhao Zeng
Keyword(s):  
Ionic Liquid ◽  
Composite Coating ◽  
Solid Phase Microextraction ◽  
Extraction Efficiency ◽  
Solid Phase ◽  
Aryl Halides ◽  
Aminobenzoic Acid ◽  
Electrochemical Preparation ◽  
Mesh Structure ◽  
Poly Aniline

An electrodeposited poly(aniline-co-m-aminobenzoic acid)–ionic liquid composite coating presents a porous mesh structure, and shows high extraction efficiency for aryl halides.

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%.

Ionic liquid-Functionalized Poly-N-phenylpyrrole coating on NiTi Alloy Substrate for highly efficient Solid-phase Microextraction

2022 ◽  
Author(s):  
Huiju Wang ◽  
Minghong Yang ◽  
Dongdong Wang ◽  
Kang Li ◽  
Shoujia Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Composite Coating ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Niti Alloy ◽  
Electrochemical Polymerization ◽  
Alloy Substrate ◽  
Highly Efficient ◽  
As Solid Phase

A novel ionic liquid (i.e. 1-butyl-3-methylimidazolium hexafluorophosphate, [C4MIM]PF6) doped poly-N-phenylpyrrole (PPPy) composite coating ([C4MIM]PF6@PPPy) was successfully fabricated by direct electrochemical polymerization on the surface of NiTi substrate as solid phase...

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