Abstract
A carrier-mediated supported liquid membrane micro-extraction using single hollow fiber membrane suitable for the determination of the herbicide glyphosate and its main metabolite aminomethylphosphonic acid in water is reported. A solution of 0.20 M Aliquat-336, a cationic carrier, in di-n-hexyl ether was selected as the supported liquid. A 20 μL of 1.0 M potassium chloride as the acceptor phase was filled in the membrane lumen. The membrane was immersed in a 20 mL of pH 9.0 sample solution. After 60-min extraction, the acceptor phase was analyzed by high-performance liquid chromatography with post-column derivatization. The enrichment factors were found to be 853 and 136 for glyphosate and aminomethylphosphonic acid, respectively. The method detection limits are 0.22 μg/L for glyphosate and 3.40 μg/L for aminomethylphosphonic acid. The procedure was validated and showed good accuracy and precision over a large linear dynamic range. The validated method was tested for the analysis of both analytes in spiked groundwater with good success.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 483-492 |
| Number of pages | 10 |
| Journal | Journal of Chromatography A |
| Volume | 1189 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - May 2 2008 |
All Science Journal Classification (ASJC) codes
- Analytical Chemistry
- Biochemistry
- Organic Chemistry
Keywords
- Aminomethylphosphonic acid
- Carrier-mediated transport
- Glyphosate
- Membrane extraction
- Micro-extraction
- SLME
Fingerprint
Dive into the research topics of 'Micro-scale membrane extraction of glyphosate and aminomethylphosphonic acid in water followed by high-performance liquid chromatography and post-column derivatization with fluorescence detector'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver