University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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Fluorescence

Citations 4

"Hyphenated Techniques Combined With Atomic Spectrometry For Environmental Studies"
Microchem. J. 1995 Volume 51, Issue 1-2 Pages 88-98

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Wang X. O., Zhuang Z. X., Yang P. Y. and Huang B. L.

Abstract: The development and application of hyphenated techniques combined with atomic spectrometries for environmental analysis at Xiamen University, China, are described. The techniques include: flow injection online microcolumns combined with AAS, GFAAS, ICP AFS and ICP-AES for trace and ultratrace analysis of water; flow injection online solvent extraction combined with AAS and ICP-AES; flow injection online hydride generation for the elemental analysis of Chinese herbs and rain by AAS and ICP-AES; flow injection online coprecipitation-dissolution for the determination of trace heavy metals in seawater and rain by GFAAS and ICP-AES; and HPLC combined with ICP-AES for multielement speciation analysis of Chinese tea.
Metals, trace Metals, heavy Plant Plant Rain Sea Review Coprecipitation Solvent extraction Volatile generation Speciation Ultratrace Volatile generation

"Preconcentration Of Zinc In Seawater On Carboxymethylated Polyethylenimine Polymethylenepolyphenylene Isocyanate Resin By Flow Injection Analysis And Online Detection Using Inductively Coupled Plasma Atomic-fluorescence Spectrometry"
Fenxi Huaxue 1992 Volume 20, Issue 2 Pages 162-164

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Yuan, D.;Wang, X.R.;Yang, P.Y.;Huang, B.

Abstract: Filtered seawater was injected into a column (1 x 0.3 cm) of carboxymethylated polyethylenimine polymethylenepolyphenyline isocyanate resin installed in a flow injection analyzer. for pre-concentration with 0.1 M ammonium acetate of pH 7 for 100 s, with elution with 1 M HNO3 (streams at 2 mL min-1). The concentrated eluate was transferred to an ICP atomic-fluorimetric spectrometer for analysis. The detection limit was 0.1 µg L-1 of Zn. No interference was observed.
Zinc Sea Resin Preconcentration Interferences

"Preconcentration Of Refractory Elements For Inductively Coupled Plasma Atomic Fluorescence Spectrometry"
NATO Sci. Ser. 1990 Volume 23, Issue 1 Pages 241-252

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S. Kaya, T. M. Durrani, S. Greenfield, J. F. Tyson

Abstract: Modern civilisation is now dependent on the large-scale use of a wide range of metals and most of these are naturally present only at trace levels in the biosphere and in biological material. The ability to analyze for trace elements is a pre-requisite for metal speciation studies. Many such studies are concerned with environmental samples including solid waste, waste water, drinking water, atmospheric particulates, particulates from emission sources, and also plant, food and animal tissue.
Preconcentration Speciation

"Preconcentration And Determination Of Inorganic Arsenic Using A Multisyringe Flow Injection System And Hydride Generation-atomic Fluorescence Spectrometry"
Talanta 2004 Volume 64, Issue 5 Pages 1335-1342

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L. O. Leal, N. V. Semenova, R. Forteza and V. Cerdà

Abstract: A new multisyringe flow injection system for inorganic arsenic determination at trace levels by hydride generation-atomic fluorescence spectrometry (HGAFS) is presented. Preconcentration on a solid-phase was carried out using a column packed with an anion-exchange resin (Amberlite IRA-410). The reagents are dispensed to the system using a multisyringe burette coupled with two multi-port selection valves. Different parameters were changing in order to make the system as effective as possible. An analytical curve was obtained for arsenic determination between 50 and 2000 ng l-1. This new approach improved five times the sensitivity over a MSFIA-HGAFS technique developed previously by the authors. Detection limit of the proposed technique was (3sb/S) of 30 ng l-1. The relative standard deviation (RSD) of As at 1 µg L-1 was 4.8% (n=7). A sample throughput of 10 h-1 has been achieved. The proposed method has been applied to different reference solid and water materials with satisfactory results.
Arsenic, inorganic NRCC DOLT-1 NRCC DORM-1 LGC 6010 Preconcentration Solid phase extraction Amberlite Multisyringe Sensitivity Optimization