A microfluidic hollow fiber membrane extractor for arsenic(V) detection

Document Type

Article

Publication Date

1-21-2008

Abstract

Microfluidic membrane extraction using a conventional hollow fiber membrane is presented for continuous, on-line extraction of arsenic. Previously reported micro-scale devices used flat membranes. These modules were relatively complex, difficult to seal, and high pressure drops made them prone to leaks. The present design is simpler, has higher active surface area per unit volume, and allows faster flow rates leading to enhanced mass transfer. On-line membrane extraction of As(V) via chelation through a supported liquid membrane was followed by conventional colorimetric detection with a UV-vis spectrophotometer. Enrichment factors were close to 30, and the detection limit was 27 μg L-1. The extraction was linear and reproducible. The relative standard deviation of six repeat extractions was less than 3%. © 2007 Elsevier B.V. All rights reserved.

Identifier

37449015223 (Scopus)

Publication Title

Analytica Chimica Acta

External Full Text Location

https://doi.org/10.1016/j.aca.2007.11.039

ISSN

00032670

PubMed ID

18155408

First Page

45

Last Page

49

Issue

1

Volume

607

Fund Ref

New Jersey Water Resources Research Institute

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