Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8855612 | Environmental Nanotechnology, Monitoring & Management | 2018 | 23 Pages |
Abstract
A simple, rapid and effective method based on dispersive solid phase microextraction (DSPME) and UV-vis spectrophotometer was developed for the preconcentration and determination of microcystin-LR (MC-LR) in environmental matrices. The activated carbon@ iron oxide@manganese oxide composite was used as solid phase material. The composite was characterized by scanning electron microscope/energy dispersive x-ray spectroscopy (SEM/EDS), transmission electron microscope (TEM), X-ray powder diffraction (XRD), nitrogen adsorption/desorption and Fourier transform infrared (FTIR). The factors affecting the DSPME were optimized using multivariate strategy. Under optimized condition, the LOD, LOQ, repeatability (nâ¯=â¯10), reproducibility (nâ¯=â¯5) and preconcentration factor were 0.5â¯Î¼g Lâ1, 1.7â¯Î¼g Lâ1, 3.1, 4.5% and 50, respectively. The percentage recovery of MC-LR in spiked water samples was found to be 98.5%. The developed method DSPME/UV-vis method was simple, rapid, cost-effective and can be used for the detection of MC-LR in real samples without any expensive or sophisticated equipment.
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Authors
Geneath Pertunia Mashile, Anele Mpupa, Mogolodi K. Dimpe, Philiswa N. Nomngongo,