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Trace analysis of sulfonylurea herbicides in water by on-line continuous flow liquid membrane extraction--C18 precolumn liquid chromatography with ultraviolet absorbance detection.
J Chromatogr A. 2003 May 02; 995(1-2):21-8.JC

Abstract

An on-line system that consists of continuous-flow liquid membrane extraction (CFLME), C18 precolumn, and liquid chromatography with UV detection was applied to trace analysis of sulfonylurea herbicides in water. During preconcentration by CFLME, five target compounds, including metsulfuron methyl, bensulfuron methyl, tribenuron methyl, sulfometuron methyl, and ethametsulfuron, were enriched in 960 microl of 0.5 mol l(-1) Na2CO3-NaHCO3 (pH 10.8) buffer used as acceptor. This acceptor was on-line neutralized and transported to the C18 precolumn where the analytes were absorbed and focused. Then the focused analytes were injected onto a C18 analytical column for separation and detection at 240 nm. The proposed method was applied to determine sulfonylurea herbicides in water, river, and reservoir water with detection limits of 10-50 ng l(-1) when enriching a 120-ml sample. Throughput is typically one sample per hour.

Authors+Show Affiliations

Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, PO Box 2871, Beijing 100085, China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

12800919

Citation

Liu, Jing-fu, et al. "Trace Analysis of Sulfonylurea Herbicides in Water By On-line Continuous Flow Liquid Membrane extraction--C18 Precolumn Liquid Chromatography With Ultraviolet Absorbance Detection." Journal of Chromatography. A, vol. 995, no. 1-2, 2003, pp. 21-8.
Liu JF, Chao JB, Jiang GB, et al. Trace analysis of sulfonylurea herbicides in water by on-line continuous flow liquid membrane extraction--C18 precolumn liquid chromatography with ultraviolet absorbance detection. J Chromatogr A. 2003;995(1-2):21-8.
Liu, J. F., Chao, J. B., Jiang, G. B., Cai, Y. Q., & Liu, J. M. (2003). Trace analysis of sulfonylurea herbicides in water by on-line continuous flow liquid membrane extraction--C18 precolumn liquid chromatography with ultraviolet absorbance detection. Journal of Chromatography. A, 995(1-2), 21-8.
Liu JF, et al. Trace Analysis of Sulfonylurea Herbicides in Water By On-line Continuous Flow Liquid Membrane extraction--C18 Precolumn Liquid Chromatography With Ultraviolet Absorbance Detection. J Chromatogr A. 2003 May 2;995(1-2):21-8. PubMed PMID: 12800919.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Trace analysis of sulfonylurea herbicides in water by on-line continuous flow liquid membrane extraction--C18 precolumn liquid chromatography with ultraviolet absorbance detection. AU - Liu,Jing-fu, AU - Chao,Jing-bo, AU - Jiang,Gui-bin, AU - Cai,Ya-qi, AU - Liu,Jie-min, PY - 2003/6/13/pubmed PY - 2004/2/5/medline PY - 2003/6/13/entrez SP - 21 EP - 8 JF - Journal of chromatography. A JO - J Chromatogr A VL - 995 IS - 1-2 N2 - An on-line system that consists of continuous-flow liquid membrane extraction (CFLME), C18 precolumn, and liquid chromatography with UV detection was applied to trace analysis of sulfonylurea herbicides in water. During preconcentration by CFLME, five target compounds, including metsulfuron methyl, bensulfuron methyl, tribenuron methyl, sulfometuron methyl, and ethametsulfuron, were enriched in 960 microl of 0.5 mol l(-1) Na2CO3-NaHCO3 (pH 10.8) buffer used as acceptor. This acceptor was on-line neutralized and transported to the C18 precolumn where the analytes were absorbed and focused. Then the focused analytes were injected onto a C18 analytical column for separation and detection at 240 nm. The proposed method was applied to determine sulfonylurea herbicides in water, river, and reservoir water with detection limits of 10-50 ng l(-1) when enriching a 120-ml sample. Throughput is typically one sample per hour. SN - 0021-9673 UR - https://www.unboundmedicine.com/medline/citation/12800919/Trace_analysis_of_sulfonylurea_herbicides_in_water_by_on_line_continuous_flow_liquid_membrane_extraction__C18_precolumn_liquid_chromatography_with_ultraviolet_absorbance_detection_ DB - PRIME DP - Unbound Medicine ER -