Exploiting Zone Trapping to Avoid Liberation of Air Bubbles in Flow-based Analytical Procedures Requiring Heating
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- VIDA Ana C. F.
- Centre for Nuclear Energy in Agriculture, University of Sao Paulo
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- ZAGATTO Elias A. G.
- Centre for Nuclear Energy in Agriculture, University of Sao Paulo
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Abstract
In flow-based analytical procedures requiring heating, liberation of air bubbles is avoided by trapping a sample selected portion into a heated hermetic environment. The flow-through cuvette is maintained into a temperature-controlled aluminium block, thus acting as the trapping element and allowing real-time monitoring. The feasibility of the innovation was demonstrated in the spectrophotometric catalytic determination of vanadium in mineral waters. Air bubbles were not released even for temperatures as high as 95°C. The proposed system handles about 25 samples per hour, requires only 3 mg p-anisidine per determination and yields precise results (r.s.d. = 2.1%), in agreement with ICP-MS. Detection limit was evaluated (3.3 σ criterion) as 0.1 μg L−1 V.
Journal
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- Analytical Sciences
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Analytical Sciences 30 (8), 833-838, 2014
The Japan Society for Analytical Chemistry
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Details 詳細情報について
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- CRID
- 1390282679236569216
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- NII Article ID
- 130004677859
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- NII Book ID
- AA10500785
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- COI
- 1:STN:280:DC%2BC2M%2Fgs1OrtQ%3D%3D
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- ISSN
- 13482246
- 09106340
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- NDL BIB ID
- 025633287
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- PubMed
- 25109646
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed