Determination of Trace Vitamin D in Milk Samples by Graphene-Based Magnetic Solid-Phase Extraction Method Coupled with HPLC

2016 ◽  
Vol 10 (3) ◽  
pp. 820-826 ◽  
Author(s):  
Zhe Jiao ◽  
Shaohe Jiao ◽  
Zongning Guo ◽  
Hongwei Chen ◽  
Ni Zhang ◽  
...  
Keyword(s):  
Vitamin D ◽  
Solid Phase Extraction ◽  
Extraction Method ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Milk Samples ◽  
Magnetic Solid

scholarly journals Magnetic Solid-Phase Extraction Based onβ-Cyclodextrins/Acrylic Acid Modified Magnetic Gelatin for Determination of Moxidectin in Milk Samples

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Yinzhu Shang ◽  
Jing Luo ◽  
Peng Wang ◽  
Xiaoya Zhao ◽  
Cheng Ye ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Milk Samples ◽  
Relative Standard ◽  
Magnetic Solid ◽  
Target Molecules

β-Cyclodextrins/acrylic acid modified magnetic gelatin was prepared and then employed as the magnetic solid-phase extraction (MSPE) sorbent for extraction of moxidectin in milk samples. Due to the rigidity of hydrophobic cavity ofβ-cyclodextrins and carboxyl groups of acrylic acid, magnetic composites are prepared to form a complex with target molecules through various kinds of chemical reactions and then showed excellent extraction performance. This method exhibits the advantages of simplicity of implementation, short extraction time (5 min), low solvent consumption, and high extraction efficiency. A rapid, simple, and effective method for the analysis of moxidectin in milk samples was established by MSPE coupled with liquid chromatography-fluorescence detection. The limit of detection was 0.1 ng·mL−1and the recoveries from milk samples were in the range of 93.8%–112.5%. The relative standard deviation was not higher than 6.4%. In conclusion, magnetic solid-phase extraction is a simple and robust preconcentration technique that can be coupled to other analytical methods for the quantitative determination of target molecules in complex samples.

Determination of quinolones in milk samples using a combination of magnetic solid-phase extraction and capillary electrophoresis

2012 ◽  
Vol 33 (13) ◽  
pp. 2041-2048 ◽  
Author(s):  
Israel S. Ibarra ◽  
Jose A. Rodriguez ◽  
Ma. Elena Páez-Hernández ◽  
Eva M. Santos ◽  
Jose M. Miranda
Keyword(s):  
Capillary Electrophoresis ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Milk Samples ◽  
Magnetic Solid

Determination of tetracyclines in milk samples by magnetic solid phase extraction flow injection analysis

2010 ◽  
Vol 171 (3-4) ◽  
pp. 407-413 ◽  
Author(s):  
Jose A. Rodriguez ◽  
Johanan Espinosa ◽  
Karina Aguilar-Arteaga ◽  
Israel S. Ibarra ◽  
Jose M. Miranda
Keyword(s):  
Solid Phase Extraction ◽  
Flow Injection ◽  
Flow Injection Analysis ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Milk Samples ◽  
Magnetic Solid
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