RETRACTED: Novel analytical reagent for the application of cloud-point preconcentration and flame atomic absorption spectrometric determination of nickel in natural water samples

Solid phase extraction method for the determination of iron, lead and chromium by atomic absorption spectrometry using Amberite XAD-2000 column in various water samples

“…A separation-preconcentration method improves the detection limit and selectivity of flame atomic absorption spectrometry [14][15][16]. Also, the preconcentration procedure is an essential step for the accurate determination of the various metal species by ET-AAS [17,18], ICP-MS [19,20], ICP-OES [21] and XRF [22]. The separation, preconcentration and determination processes of trace metal ions from different matrices, especially water samples, are mainly based on the utilization and application of a number of available techniques.…”

“…The separation, preconcentration and determination processes of trace metal ions from different matrices, especially water samples, are mainly based on the utilization and application of a number of available techniques. These include solid phase extraction (SPE) [17][18][19][20][21][22], co-precipitation [16,23], ion-exchange [24] and flotation, etc. [25].…”

Separation/preconcentration of silver(I) and lead(II) in environmental samples on cellulose nitrate membrane filter prior to their flame atomic absorption spectrometric determinations

“…Due to the amount of ligand, which is also an important factor in the preconcentration studies for the quantitative recoveries of analyte ions from the working media [37][38][39][40][41], the influences of the APDC amounts on the retention of Ag(I) and Pb(II) on the cellulose nitrate membrane filter was also examined in the ligand amount range 250-1500 g with keeping other analytical parameters constant. The results were given in Fig.…”

Cloud-point preconcentration and spectrophotometric determination of trace amounts of molybdenum(VI) in steels and water samples

“…The phase separation is typically of the upper consolute type, i.e., it occurs on cooling below a characteristic temperature T c , which, in turn, increases with salt content. Some separation and preconcentration cloud-point extraction procedures have been developed for various chemical species prior to their determination by different methods [25][26][27][28]. Recently, we used the cloud-point extraction for preconcentration of trace quantities of some cations and determination by spectrophotometry [29][30][31][32].…”