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Development of the continuously variable volume reactor for flow injection analysis Part 1. Design, capabilities and testing

机译:用于流动注射分析的无级变速反应器的开发第1部分。设计,能力和测试

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摘要

A new apparatus for mixing sample and reagent in flow injection analysis (FIA) is described. The continuously variable volume reactor (CVVR) replaces the conventional mixing coil in a flow injection (FI) manifold to provide mixing and dilution. A linear actuator motor allows control of the chamber volume via LabVIEW software. The chambe volume can be incremented in steps of 1 #mu#l over the range 68-1704 #mu#l. In addition, the chamber has an integral variable-speed stirring unit that is also under computer control. Experiments were performed to evaluate the dispersion characteristics of this new device, evaluate the volume reproducibility, and understand the mixing characteristics. Use of the chamber is shown in the detrmination of iron(II) in pond water, and in NIST SRM 1643d with excellent results and a detection limit of 3.7 #mu#g/l iron(II). Advantages of the CVVR and future research activities using the device are discussed.
机译:描述了一种用于在流动注射分析(FIA)中混合样品和试剂的新设备。连续可变体积反应器(CVVR)取代了流动注射(FI)歧管中的常规混合盘管,可进行混合和稀释。线性执行器马达允许通过LabVIEW软件控制腔室容积。可以在68-1704#mu#l的范围内以1#mu#l的步长增加chambe的音量。此外,该腔室还具有一体式变速搅拌装置,该装置也由计算机控制。进行了实验以评估这种新设备的分散特性,评估体积重现性并了解混合特性。在池水中铁(II)的脱氨和NIST SRM 1643d中显示了该室的使用,结果极好,检出限为3.7#mu#g / l铁(II)。讨论了CVVR的优势以及使用该设备的未来研究活动。

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