An ion imprinted magnetic organosilica nanocomposite for the selective determination of traces of Cd(ii) in a minicolumn flow-through preconcentration system coupled with graphite furnace atomic absorption spectroscopy

Abstract

In this paper we present the determination of ultratraces of cadmium ions in water by means of a minicolumn (MC) flow-through preconcentration system coupled to graphite furnace atomic absorption spectrometry....

Taking a deeper look into the roles of amines in atomic absorption spectrometry

“…The procedure shows suitable analytical characteristics with a LOD of 0.64 ng L −1 , a linear calibration range of 2.5-100 ng L −1 , and RSD of 1.9% (n = 6; 10 ng L −1 ) with lifetimes above 800 cycles. 153 The successful application of primary and secondary amines (PSA) allows us to extract by SPE the available Pb (II) in soil samples by neutral salt extraction within the best pH range of 3.0-8.0. 154 Amine-and thiol-functionalised mesoporous SBA-15 silicas work well for the SPE of Pd (II) from digested samples (soil and road dust) with subsequent determination by slurry sampling ETAAS.…”

“…The procedure shows suitable analytical characteristics with a LOD of 0.64 ng L −1 , a linear calibration range of 2.5–100 ng L −1 , and RSD of 1.9% ( n = 6; 10 ng L −1 ) with lifetimes above 800 cycles. 153…”

Recent applications of atomic spectroscopy coupled with magnetic solid‐phase extraction techniques for heavy metal determination in environmental samples: A review

“…The synthesized adsorbent can be reused up to 12 times, indicating decent stability. Minaberry Yanina Susana, et al, [ 92 ] reported an adsorbent based on magnetic material with ion imprinting (MII) for the separation of Cd(II) from tap water and osmosis water, and detection was carried out using GFAAS. The synthesized material is rich in amino (−NH 2 ) functional groups, and it can easily adsorb the Cd(II) (mild acidic nature).…”

High-sensitivity detection of low-concentration heavy metal ions in solution by multiple reflection enhanced absorption (MREA) spectroscopy

“…10–12 Compared to electrochemical methods, fluorescence spectroscopy, chromatography, mass spectrometry, and inductively coupled plasma atomic emission spectrometry, absorption spectroscopy has wide applications in in situ real-time monitoring due to its advantages of fast detection speed, simple operation, and easy maintenance. 13–19…”

“…[10][11][12] Compared to electrochemical methods, uorescence spectroscopy, chromatography, mass spectrometry, and inductively coupled plasma atomic emission spectrometry, absorption spectroscopy has wide applications in in situ real-time monitoring due to its advantages of fast detection speed, simple operation, and easy maintenance. [13][14][15][16][17][18][19] In the determination of absorption spectra, incident light passes through the sample and then the transmitted light signals are converted into electrical signals by the detector to form absorption spectra. 20,21 The detection limit and sensitivity of absorption spectra depend on the detector response to light, and the response signals decreasewith the decrease in concentration.…”