Back to ASDL
-
To download the media (or a link to the media) in these blog posts simply right click on the illustrations, animations, photos, or video and save to your computer.
Unless otherwise identified, all images are available under the following Creative Commons License.
.
Tag Archives: flow injection
Incorporating a Separation Into a Flow Injection Analysis
Dialysis and gaseous diffusion are accomplished by placing a semipermeable membrane between the carrier stream containing the sample and an acceptor stream. Shown here is a flow injection manifold incorporating a semipermeable membrane. The smaller green solutes can pass through the … Continue reading
Posted in Illustration
Tagged dialysis, extraction, FIA, flow injection, liquid-liquid extraction, LLE, separation
Leave a comment
Manifolds for Flow Injection Analysis
The heart of a flow injection analyzer is the transport system that brings together the carrier stream, the sample, and any reagents that react with the sample. Each reagent stream is considered a separate channel, and all channels must merge … Continue reading
Peristaltic Pump
A propelling unit moves the carrier stream through the flow injection analyzer. Although several different propelling units have been used, the most common is a peristaltic pump. As illustrated here, a peristaltic pump consists of a set of rollers attached … Continue reading
Instrumentation for Flow Injection Analysis
The basic components of a flow injection analyzer are shown below and include a pump for propelling the carrier stream and reagent streams, a means for injecting the sample into the carrier stream, and a detector for monitoring the composition … Continue reading
Fiagrams
An FIA curve, or fiagram, is a plot of the detector’s signal as a function of time. The illustration below shows a typical fiagram for conditions in which both convection and diffusion contribute to the sample’s dispersion. Also shown on … Continue reading
Flow Profile in Flow-Injection Analysis
When we first inject a sample into an FIA’s carrier stream it has the rectangular flow profile of width w as shown below in (a). As the sample moves through the mixing zone and reaction zone, the width of its … Continue reading
Flow-Injection Analysis
Flow injection analysis (FIA) was developed in the mid-1970s as a highly efficient technique for the automated analyses of samples. Unlike a centrifugal analyzer, in which the number of samples is limited by the transfer disk’s size, FIA allows for … Continue reading