Multisyringe Flow Injection Analysis: State-of-the-Art and Perspectives

Flow injection potentiometric determination of Chlorphenoxamine Hydrochloride

“…The electrode was connected to a WTW pMX 2000 microprocessor pH/ion meter and interfaced to a Model BD111 strip chart recorder from Kipp and Zonn (Delft, The Netherlands). The flow injection measurements were carried out in a two line system [16,17] where the sample was injected into a carrier stream, which then merged with another stream; the same tubing size was used in both lines to offer the same flow rate. A wall-jet cell, providing a low dead volume, fast response, good wash conditions and compatibility with electrodes of different shape and size, was used in flow measurements, where a Perspex cup with axially positioned inlet polypropylene tubing was mounted at the sensing surface of the electrode body.…”

Miniaturization of environmental chemical assays in flowing systems: The lab-on-a-valve approach vis-à-vis lab-on-a-chip microfluidic devices

“…And the on-line hyphenation of reversed-phase SPE with HPLC for monitoring of trace level concentration of organic pollutants needs dilution of the alcoholic eluate with aqueous solutions to prevent the broadening of the injection band along the analytical column [ 82 ]. In this context, the multisyringe flow injection (MSFI) analysis approach [48,49], combining the advantages of multichannel operation for convenient processing of the eluate, pulseless flow, and the accurate metering of microvolumes of solutions via multicommutation protocols, has proven an appealing alternative to µSI for accommodation of LOV methods requiring the processing of the eluate prior to detection [29,33]. Hybrid µFI-SI analyzers composed of two or more individually-operating syringe pumps are also reported to constitute a versatile means to house LOV procedures [24,28].…”

Multisyringe Flow Injection Analysis for Environmental Monitoring: Applications and Recent Trends

“…Hence, flow injection analysis is based in three principles: (1) reproducible sample injection or insertion in a flowing carrier stream; (2) controlled dispersion of the sample zone; and (3) reproducible timing of its movement from the injector point to the detection system. Since its inception, MSFIA has been the basis for automation of more than 120 different assays, reviewed in several publications (Almeida et al, 2011;Magalhães et al, 2009;Maya et al, 2009;Segundo & Magalhães, 2006). This type of automatic flow injection systems is based on the utilization of a multisyringe burette, depicted schematically in Fig.…”