Pinch valve injector for flow analysis Injetor multicanal com válvulas de estrangulamento para análise em fluxo

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dc.contributor.authorPalgrossi F.S.
dc.contributor.authorPedrotti J.J.
dc.contributor.authorGutz I.G.R.
dc.date.accessioned2024-03-13T01:47:02Z
dc.date.available2024-03-13T01:47:02Z
dc.date.issued2001
dc.description.abstractAn important component for the automation of flow injection analysis (FIA) systems is the sample injection valve. A simple and inexpensive commutator with 16 pinch valves (8 normally open and 8 closed) was developed and configured as a multichannel injection valve. It is activated by a single solenoid of 3 Kgf, powered by a pulsed driver circuit, controlled by a microcomputer or a switch. FIA with spcctrophometric detection of potassium dichromate solution was used for the evaluation of the new injection valve and its comparison with other valves, for sample loops of 50, 100, 200, 300 and 500 μL. The repeatability was favorable (RSD 1.0% for 15 injections at each loop volume) compared to a manual injector, an electropneumatic injector and an injector configured with three mini solenoid valves (RSD 1.1, 1.3 and 1.0%, respectively, for15 injections at each loop volume).
dc.description.firstpage689
dc.description.issuenumber5
dc.description.lastpage692
dc.description.volume24
dc.identifier.doi10.1590/s0100-40422001000500017
dc.identifier.issn0100-4042
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/38040
dc.relation.ispartofQuimica Nova
dc.rightsAcesso Aberto
dc.subject.otherlanguageCommutator
dc.subject.otherlanguageFlow analysis
dc.subject.otherlanguageInjector
dc.subject.otherlanguagePinch valve
dc.titlePinch valve injector for flow analysis Injetor multicanal com válvulas de estrangulamento para análise em fluxo
dc.typeArtigo
local.scopus.citations4
local.scopus.eid2-s2.0-0347666190
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0347666190&origin=inward
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