Continuous, on-line monitoring of haloacetic acids via membrane extraction

Xiaoyan Wang; Dawen Kou; Somenath Mitra

doi:10.1016/j.chroma.2005.06.075

Continuous, on-line monitoring of haloacetic acids via membrane extraction

Xiaoyan Wang, Dawen Kou, Somenath Mitra

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

38 Scopus citations

Abstract

Haloacetic acids are an important class of disinfection byproducts that are being regulated. In this paper we report novel instrumentation for continuous monitoring of the nine haloacetic acids. Hollow fiber liquid-liquid membrane extraction (LLME) and supported liquid membrane extraction (SLME) followed by on-line HPLC-UV detection were studied. With continuous LLME, seven halo-acetic acids could be analyzed and enrichment factor (EF) was around 50. All the nine acids could be extracted and quantified by continuous SLME. Experiments with laboratory standards demonstrated that EF and extraction efficiency could be as high as 500 and 54%, respectively. Relative standard deviations based on seven replicates were between 3.3 and 10.3%, and the MDLs were at sub-ppb levels.

Original language	English (US)
Pages (from-to)	39-44
Number of pages	6
Journal	Journal of Chromatography A
Volume	1089
Issue number	1-2
DOIs	https://doi.org/10.1016/j.chroma.2005.06.075
State	Published - Sep 30 2005

All Science Journal Classification (ASJC) codes

Analytical Chemistry
Biochemistry
Organic Chemistry

Keywords

Disinfection byproducts
Haloacetic acids
Membrane extraction
Supported liquid membrane extraction
Water monitoring

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10.1016/j.chroma.2005.06.075

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title = "Continuous, on-line monitoring of haloacetic acids via membrane extraction",

abstract = "Haloacetic acids are an important class of disinfection byproducts that are being regulated. In this paper we report novel instrumentation for continuous monitoring of the nine haloacetic acids. Hollow fiber liquid-liquid membrane extraction (LLME) and supported liquid membrane extraction (SLME) followed by on-line HPLC-UV detection were studied. With continuous LLME, seven halo-acetic acids could be analyzed and enrichment factor (EF) was around 50. All the nine acids could be extracted and quantified by continuous SLME. Experiments with laboratory standards demonstrated that EF and extraction efficiency could be as high as 500 and 54%, respectively. Relative standard deviations based on seven replicates were between 3.3 and 10.3%, and the MDLs were at sub-ppb levels.",

keywords = "Disinfection byproducts, Haloacetic acids, Membrane extraction, Supported liquid membrane extraction, Water monitoring",

author = "Xiaoyan Wang and Dawen Kou and Somenath Mitra",

note = "Funding Information: We thank US Geological Survey-New Jersey Water Resource Research Institute for financial support (2003NJ43B). ",

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T1 - Continuous, on-line monitoring of haloacetic acids via membrane extraction

AU - Wang, Xiaoyan

AU - Kou, Dawen

AU - Mitra, Somenath

N1 - Funding Information: We thank US Geological Survey-New Jersey Water Resource Research Institute for financial support (2003NJ43B).

PY - 2005/9/30

Y1 - 2005/9/30

N2 - Haloacetic acids are an important class of disinfection byproducts that are being regulated. In this paper we report novel instrumentation for continuous monitoring of the nine haloacetic acids. Hollow fiber liquid-liquid membrane extraction (LLME) and supported liquid membrane extraction (SLME) followed by on-line HPLC-UV detection were studied. With continuous LLME, seven halo-acetic acids could be analyzed and enrichment factor (EF) was around 50. All the nine acids could be extracted and quantified by continuous SLME. Experiments with laboratory standards demonstrated that EF and extraction efficiency could be as high as 500 and 54%, respectively. Relative standard deviations based on seven replicates were between 3.3 and 10.3%, and the MDLs were at sub-ppb levels.

AB - Haloacetic acids are an important class of disinfection byproducts that are being regulated. In this paper we report novel instrumentation for continuous monitoring of the nine haloacetic acids. Hollow fiber liquid-liquid membrane extraction (LLME) and supported liquid membrane extraction (SLME) followed by on-line HPLC-UV detection were studied. With continuous LLME, seven halo-acetic acids could be analyzed and enrichment factor (EF) was around 50. All the nine acids could be extracted and quantified by continuous SLME. Experiments with laboratory standards demonstrated that EF and extraction efficiency could be as high as 500 and 54%, respectively. Relative standard deviations based on seven replicates were between 3.3 and 10.3%, and the MDLs were at sub-ppb levels.

KW - Disinfection byproducts

KW - Haloacetic acids

KW - Membrane extraction

KW - Supported liquid membrane extraction

KW - Water monitoring

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JF - Journal of Chromatography A

IS - 1-2

ER -

Continuous, on-line monitoring of haloacetic acids via membrane extraction

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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