Development of a coprecipitation system for the speciation/preconcentration of chromium in tap waters

Preconcentration and determination of ultra-trace amounts of U(VI) and Th(IV) using titan yellow-impregnated Amberlite XAD-7 resin

“…In the last decades, a number of separation/preconcentration techniques have been utilised for the determination of trace amounts of toxic metal ions, including liquid-liquid extraction [10], precipitation [11] and solid-phase extraction (SPE) [12][13][14][15]. Among these techniques, SPE procedures are considered superior to other procedures due to their simplicity, flexibility, cost effectiveness, higher enrichment factors, ease of automation, low consumption of reagents and safety with respect to hazardous samples [16][17][18][19][20][21][22].…”

Association of Environmental Toxic Elements in Biological Samples of Myocardial Infarction Patients at Different Stages

“…Toxic elements may enter the food chain through contamination of the environment, e.g., uptake of Cd in crop from atmospheric depositions, mineral fertilizers, and contaminated soil [34][35][36].…”

Chromium speciation using task specific ionic liquid/aqueous phase biphasic system combined with flame atomic absorption spectrometry

“…As a result, accurate determination of Cr species at trace levels is an important challenge, because the analytical techniques such as flame or electrothermal atomic absorption spectrometry, inductively coupled plasma-atomic emission spectrometry, and inductively coupled plasma-mass spectrometry, can only detect the total amount of Cr. Consequently, sample preparation methods are required for separation and preconcentration of Cr species before detection [8][9][10][11][12][13][14][15]. On the other hand, most of the reported pretreatment procedures are neither selective nor sensitive enough.…”