Preparation of functionalized graphene and ionic liquid co-doped polypyrrole solid phase microextraction coating for the detection of benzoates preservatives

Talanta ◽  
2021 ◽  
pp. 122231
Author(s):  
Jie Du ◽  
Faqiong Zhao ◽  
Baizhao Zeng
Keyword(s):  
Ionic Liquid ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Functionalized Graphene ◽  
Co Doped

Determination of water pollutants by direct-immersion solid-phase microextraction using polymeric ionic liquid coatings

2010 ◽  
Vol 1217 (8) ◽  
pp. 1236-1243 ◽  
Author(s):  
Jessica López-Darias ◽  
Verónica Pino ◽  
Jared L. Anderson ◽  
Christa M. Graham ◽  
Ana M. Afonso
Keyword(s):  
Ionic Liquid ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Polymeric Ionic Liquid ◽  
Water Pollutants ◽  
Direct Immersion

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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