1. Determination of Fe, Ti in Seawater Using a Flow-injection Pretreatment System with ICP-MS.
- Author
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Ge, Huanying, Chen, Ding, Li, Shu, Zheng, Airong, Zhu, Zuhao, and Zheng, Xuehong
- Subjects
SEAWATER ,SEA water analysis ,SOLID phase extraction ,BUFFER solutions ,WATER supply ,TRACE metals - Abstract
Ge, H.; Chen, D.; Li, S.; Zheng, A.; Zhu, Z., and Zheng, X., 2019. Determination of Fe, Ti in seawater using a flow-injection pretreatment system with ICP-MS. In: Guido-Aldana, P.A. and Mulahasan, S. (eds.), Advances in Water Resources and Exploration. Journal of Coastal Research, Special Issue No. 93, pp. 77–82. Coconut Creek (Florida), ISSN 0749-0208. In order to solve the interference caused by low metal concentration and salts matrix of seawater samples, this paper present a handy flow- injection system with solid-phase extraction to automate pretreatment procedures for offline Fe and Ti analysis in seawater by ICP-MS. By combining 8-position, 3-way and 6-way valves in the pipeline, the flow-injection system enhance the sample treatment efficiency by simultaneously loading two reagents online for: sample loading, buffering, and preconcentration. Each sample treatment spends about 16 min and consumes 12 mL of seawater sample and 8 mL of buffer solution. The chelation of Toyopearl-AF-Chelate-650M for Fe and Ti occurs in pH5.5 at an injection rate of 1.0 mL·min
-1 . The eluent (0.8 mol·L-1 HNO3 ) is able to elute Fe and Ti in 90 s at an elution rate of 1.0 mL·min-1 . Seawater sample needs 90 min of 120 W UV-oxidation to dissociate metal-organic complexes. The precision and availability of this method are tested by measuring Jiulongjiang Estuary seawater samples. [ABSTRACT FROM AUTHOR]- Published
- 2019
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