Magnetic techniques for the detection and determination of xenobiotics and cells in water

Abstract

Magnetic techniques based on the application of magnetic nanoparticles and microparticles and films have been successfully used for the determination and detection of different types of xenobiotics (e.g. herbicides, insecticides, fungicides, aromatic and polyaromatic hydrocarbons, pentachlorophenol and heavy metal ions) as well as viruses, microbial pathogens and protozoan parasites in water samples. Preconcentration of xenobiotics from large volumes of samples can be performed using magnetic solid-phase extraction, stir-bar sorptive extraction and related procedures. This review provides basic information about these techniques. Published examples of successful applications document the importance of these simple and efficient procedures employing magnetic materials.

Synthesis, Characterization and in Vitro Evaluation of Manganese Ferrite (MnFe2O4) Nanoparticles for Their Biocompatibility with Murine Breast Cancer Cells (4T1)

“…Special attraction has also been paid to biomedical applications like drug delivery, biosensors, magnetic resonance imaging and magnetic hydrothermia [1][2][3][4][5][6][7]. Manganese ferrite nanoparticles exhibit superior mechanical, luminescent and magnetic properties compared to other existing magnetic ferrite nanoparticles.…”

Importance of Treatment Process on the Analysis of Penicillins in Milk Samples by Capillary Electrophoresis

“…In order to minimize the steps involved, magnetic compounds have been incorporated (mainly, Fe 3 O 4 or γ-Fe 2 O 3 ) in the solid phase. These magnetic supports can be dispersed and isolated from the sample by the use of an external magnetic field [18][19]. Core-shell particles with paramagnetic core and silica shell are the most common particles synthesized.…”

Magnetically separable CoFe2O4/CoxFey/activated carbon composites for Cd(II) removal from wastewater

“…Many methods have been developed to implant magnetic media into AC, including chemical co‐precipitation, thermal treatment, solution impregnation, heterogeneous nucleation and hydrothermal method . Due to their chemical and physical stability, ferrimagnetic oxides (CoFe 2 O 4 , Fe 3 O 4 , α‐FeOOH, CuFe 2 O 4 , γ‐Fe 2 O 3 ) have often been used as the magnetic media, which could supply suitable saturation magnetization ( M s ) and very small coercive force ( H c ). Shao et al prepared MnFe 2 O 4 /AC magnetic composite using the co‐precipitation method for removal of tetracycline.…”