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

Kamilah Hylton; Somenath Mitra

doi:10.1016/j.aca.2007.11.039

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

Kamilah Hylton, Somenath Mitra

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

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%.

Original language	English (US)
Pages (from-to)	45-49
Number of pages	5
Journal	Analytica Chimica Acta
Volume	607
Issue number	1
DOIs	https://doi.org/10.1016/j.aca.2007.11.039
State	Published - Jan 21 2008

All Science Journal Classification (ASJC) codes

Analytical Chemistry
Biochemistry
Environmental Chemistry
Spectroscopy

Keywords

Arsenic
Membrane extraction
Microfluidic

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10.1016/j.aca.2007.11.039

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title = "A microfluidic hollow fiber membrane extractor for arsenic(V) detection",

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%.",

keywords = "Arsenic, Membrane extraction, Microfluidic",

author = "Kamilah Hylton and Somenath Mitra",

note = "Funding Information: This work was made possible by funding from the New Jersey Water Resources Research Institute (NJWRRI). We would also like to thank Jack Gidney for machining the channels.",

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doi = "10.1016/j.aca.2007.11.039",

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T1 - A microfluidic hollow fiber membrane extractor for arsenic(V) detection

AU - Hylton, Kamilah

AU - Mitra, Somenath

N1 - Funding Information: This work was made possible by funding from the New Jersey Water Resources Research Institute (NJWRRI). We would also like to thank Jack Gidney for machining the channels.

PY - 2008/1/21

Y1 - 2008/1/21

N2 - 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%.

AB - 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%.

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KW - Membrane extraction

KW - Microfluidic

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

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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