Chiral Pollutants

Ali, Imran; Kulsum, Umma; Saleem, Kishwar; Hussain, Afzal

doi:10.1002/0471238961.chirali.a01

Cited by 3 publications

(2 citation statements)

References 108 publications

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“…The toxic effects of pyrethroids on non‐target organisms have been reviewed and reported to be in the µg L −1 toxicity range 1. Although the effects on humans are still unclear, the US‐EPA has classified some of these pyrethroids (cypermethrin, permethrin and bifenthrin) as possible human carcinogens 2. Pyrethroids are persistent compounds with high hydrophobicity (log k ow in the range 5.7–7.6) and very low water solubility (of few µg L −1 ).…”

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confidence: 99%

“…[1] Although the effects on humans are still unclear, the US-EPA has classified some of these pyrethroids (cypermethrin, permethrin and bifenthrin) as possible human carcinogens. [2] Pyrethroids are persistent compounds with high hydrophobicity (log k ow in the range 5.7-7.6) and very low water solubility (of few mg L À1 ). Therefore, they are rapidly and completely adsorbed to sediment particles.…”

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Performance of gas chromatography/tandem mass spectrometry in the analysis of pyrethroid insecticides in environmental and food samples

Feo

Eljarrat

Barceló

2011

Rapid Comm Mass Spectrometry

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The performance of gas chromatography coupled with tandem mass spectrometry (GC/MS/MS) was tested for the simultaneous determination of twelve pyrethroid insecticides. First, a comparison of two different ionization modes, electron ionization (EI) and negative chemical ionization (NCI), was carried out using MS and MS/MS. NCI-MS/MS provided the best results in terms of selectivity and sensitivity giving very low detection limits of 0.11 to 450 fg injected. The reliability of the method was confirmed through the evaluation of quality parameters such as accuracy (70-100%), and repeatability and reproducibility, with coefficients of variation below 15% and 10%, respectively. The applicability of the GC/MS/MS method to real samples and influence of matrix effects were evaluated through the analysis of spiked water, sediment and milk at 0.25 ng L(-1) , 5 ng g(-1) dry weight (dw) and 25 ng g(-1) (dw), respectively, of each pyrethroid insecticide considered. Using GC/NCI-MS/MS, matrix spectral interferences were minimized providing method limits of detection (MLODs) of 0.05-2.59 ng L(-1) , 0.10-87.7 pg g(-1) dw, 2.29-1071 pg g(-1) lipid weight (lw) for water, sediment and milk, respectively. To the best of our knowledge, the MLOD values found in our study were better than those reported in previous studies; in particular for sediment and food samples, they were one order of magnitude lower.

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confidence: 99%

Performance of gas chromatography/tandem mass spectrometry in the analysis of pyrethroid insecticides in environmental and food samples

Feo

Eljarrat

Barceló

2011

Rapid Comm Mass Spectrometry

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Current advancements of magnetic nanoparticles in adsorption and degradation of organic pollutants

Ul-Islam

Ullah

Khan

et al. 2017

Environ Sci Pollut Res

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Nanotechnology is a fast-emerging field and has received applications in almost every field of life. Exploration of new synthetic technologies for size and shape control of nanomaterials is getting immense consideration owing to their exceptional properties and applications. Magnetic nanoparticles (MNPs) are among the most important group of nanoparticles thanks to their diverse applications in medical, electronic, environmental, and industrial sectors. There have been numerous synthetic routes of MNPs including thermal decomposition, co-precipitation, microemulsion, microwave assisted, chemical vapor deposition, combustion synthesis, and laser pyrolysis synthesis. The synthesized MNPs have been successfully applied in medical fields for therapy, bioimaging, drug delivery, and so on. Among environmental aspects, there has been great intimidation of organic pollutants in air and water. Utilization of various wastes as adsorbents has removed 80 to 99.9% of pollutants from contaminated water. MNPs as adsorbents compared to coarse-grained counterparts have seven times higher capacity in removing water pollutants and degrading organic contaminants. This study is focused to introduce and compile various routes of MNP synthesis together with their significant role in water purifications and degradation of organic compounds. The review has compiled recent investigation, and we hope it will find the interest of researchers dealing with nanoparticles and environmental research. Graphical abstract Synthesis and applications of magnetic nanoparticles.

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Summary and future directions

Nandi¹

2011

Chirality in Biological Nanospaces

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Chiral Pollutants

Cited by 3 publications

References 108 publications

Performance of gas chromatography/tandem mass spectrometry in the analysis of pyrethroid insecticides in environmental and food samples

Performance of gas chromatography/tandem mass spectrometry in the analysis of pyrethroid insecticides in environmental and food samples

Current advancements of magnetic nanoparticles in adsorption and degradation of organic pollutants

Summary and future directions

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