Barros Valdemir A F, Zagatto Elias A G
Centre for Nuclear Energy in Agriculture, University of Sao Paulo, P.O. Box 96, Piracicaba, 13400-970, Brazil.
Centre for Nuclear Energy in Agriculture, University of Sao Paulo, P.O. Box 96, Piracicaba, 13400-970, Brazil.
Talanta. 2024 Dec 1;280:126689. doi: 10.1016/j.talanta.2024.126689. Epub 2024 Aug 12.
The conceptual expansion, fast development, and general acceptance of flow analysis are consequence of its adherence to the principles of green and white analytical chemistry, and chemical derivatization plays an essential role in this context. Through the flow analysis development, however, some of its potentialities and limitations have been overlooked. This is more evident when the involved modifications in flow rates, timing and/or manifold architecture deteriorate the analytical signals. These aspects have not always been systematically investigated, and are addressed here in relation to flow analyzers with UV-Vis spectrophotometric detection. Novel strategies for solution handling, guidance for dealing with the aforementioned analytical signal deterioration, and an alternative possibility for exploiting differential aspiration are presented. The concept of blank reagent carrier stream is proposed.
流动分析的概念扩展、快速发展和广泛接受是其遵循绿色和白色分析化学原则的结果，而化学衍生化在这方面起着至关重要的作用。然而，在流动分析的发展过程中，其一些潜力和局限性被忽视了。当流速、时间和/或流路结构的相关改变使分析信号变差时，这一点更为明显。这些方面并非总是得到系统研究，本文针对配备紫外可见分光光度检测的流动分析仪对这些方面进行探讨。本文提出了溶液处理的新策略、应对上述分析信号变差的指导方法以及利用差分进样的另一种可能性。同时还提出了空白试剂载流的概念。
