Preconcentration of heavy metals on activated carbon and their determination in fruits by inductively coupled plasma optical emission spectrometry

Ultrasound-assisted temperature-controlled ionic liquid microextraction for the preconcentration and determination of cadmium content in mussel samples

“…Although this metal is relatively rare in nature and is generated primarily as a byproduct of zinc and lead mining, it may be found naturally in plants, water, soil, and in the atmosphere at very low concentrations. Several studies have been carried out to monitor human exposure to cadmium through its determination in various types of matrices such as water, vegetables, and seafood (Bianchin et al, 2006;Feist & Mikula, 2014;Rahimi-Nasrabadi et al, 2013;Santos, Trigueiro, Lemos, Furtunato, & Cardoso, 2013).…”

Solid phase extraction of metal ions in environmental samples on 1-(2-pyridylazo)-2-naphthol impregnated activated carbon cloth

“…The sample volume is one of effective analytical variables for obtaining high preconcentration factors and maximum applicable volumes in preconcentration studies (Shah et al, 2013;Feist and Mikula, 2014). The influence of the sample volume on the recoveries of Pb(II), Cd(II) and Ni(II) was assessed using 50-1000 mL model solutions containing 20 mg of Pb(II) and Ni(II) and 5 mg of Cd (II) ions in an SPE system under the optimized experimental conditions.…”

A sustainable alternative to synthesis optical sensing receptor for the detection of metal ions

“…As mentioned earlier, the origin of the fluorescence is yet to be understood fully and thus it will be difficult to identify the exact quenching mechanism observed in this study. However, it has been quite clear that carbon nanostructures have high absorption affinity towards metal ions [34,35], which means the metal ions will be at close contact with the carbon moiety. Such close distance of a quencher to a fluorescent species usually will disrupt the fluorescence transition to other non-radiative pathways, which will be seen as quenching.…”