Application of vortex-assisted solid-phase extraction for the simultaneous preconcentration of Cd(ii) and Pb(ii) by nano clinoptilolite modified with 5(p-dimethylaminobenzylidene) rhodanine

Abstract

Herein, a simple, fast and reliable method based on vortex-assisted solid-phase extraction (VA-SPE) followed by flame atomic absorption spectrometry was developed for the simultaneous preconcentration and trace detection of cadmium and lead.

One-step synthesis of hydrophobic clinoptilolite modified by silanization for the degradation of crystal violet dye in aqueous solution

“…Although CP has been preliminarily applied as a sorbent in solid-phase extractions for the enrichment or removal of trace amounts of heavy metals, 11 gas separation, 12 catalysis, 13 drug release, 14 and soil improvement, 15 its poor hydrophobicity and therefore strong water adsorption ability strongly limit its performance under wet conditions. However, the hydrophobic modication of synthetic CP is rarely reported because of its strict synthesis conditions.…”

Synthesis of Nanocube‐Shaped Cobalt Tin Hydroxides for the Preconcentration of Lead in Environmental Seawater Collected from Antarctic Region

“…The satisfactory results have proven that the presented analytical method can be employed for the determination of lead in various environmental water samples with high accuracy and sensitivity. Real samples E. profundum loaded Amberlite-XAD-4 [41] 0.043 150 50 ICP-OES Food, environmental and water samples MoS 2 -Fe 3 O 4 nanocomposite [42] 3.3 30 10 FAAS Plant and water samples Silica-based amino-tagged nanosorbent [21] 0.05 10 10 GFAAS Water and urine samples Hierarchical silica-based lead imprinted mesoporous polymers [43] 0.43 40.07 50 FAAS River water and fish samples MgCo 2 O 4 nanosorbent [44] 0.39 4.0 10 FAAS Wastewater, lake water, sea water, tobacco, and food samples Bovine serum albumin-Cu(II) hybrid nanoflowers [45] 8.8 25 10 FAAS Water, air, food, and cigarette samples NiCo 2 O 4 @ZnCo 2 O 4 nanomaterial [14] 4.0 50 100 FAAS Dam water, seawater, wastewater, tea, and cinnamon Ag modified ZnO nanoflowers [7] 8.52 6.0 40 FAAS Food and water samples Nano clinoptilolite modified with 5(p-dimethylaminobenzylidene) rhodamine [46] 6.…”