PMID- 15830956 OWN - NLM STAT- MEDLINE DCOM- 20050708 LR - 20190720 IS - 0021-9673 (Print) IS - 0021-9673 (Linking) VI - 1069 IP - 2 DP - 2005 Apr 1 TI - Analysis of herbicides in water using temperature-responsive chromatography and an aqueous mobile phase. PG - 281-5 AB - A simple and rapid method has been developed for herbicides in water using temperature-responsive liquid chromatography (LC) and a column packed with poly(N-isopropylacrylamide) (PNIPAAm), a polymer anchored on the stationary-phase surface of modified silica. PNIPAAm reversibly changes its hydrophilic/hydrophobic properties in water in response to temperature. The method was used to determine five sulfonylurea and three urea herbicides. Separation was achieved with a 10 mM ammonium acetate (pH 3.0) isocratic aqueous mobile phase, and by changing the column temperature. The analytes were extracted from water by off-line solid-phase extraction (SPE) with an N-vinyl-pyrrolidone polymer cartridge. The average recoveries of the eight herbicides from spiked pure water, tap water and river water were 70-130% with relative standard deviations (RSDs) of <10%. The limits of quantitation (LOQ) of the eight herbicides were between 1 and 4 microg l(-1). FAU - Ayano, Eri AU - Ayano E AD - National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan. FAU - Okada, Yuji AU - Okada Y FAU - Sakamoto, Chikako AU - Sakamoto C FAU - Kanazawa, Hideko AU - Kanazawa H FAU - Okano, Teruo AU - Okano T FAU - Ando, Masanori AU - Ando M FAU - Nishimura, Tetsuji AU - Nishimura T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 0 (Acrylic Resins) RN - 0 (Herbicides) RN - 0 (Phenylurea Compounds) RN - 0 (Sulfonylurea Compounds) RN - 0 (Water Pollutants, Chemical) RN - 25189-55-3 (poly-N-isopropylacrylamide) SB - IM MH - Acrylic Resins MH - Chromatography, Liquid/*methods MH - Herbicides/*analysis MH - Hydrophobic and Hydrophilic Interactions MH - Phenylurea Compounds/analysis MH - Reproducibility of Results MH - Sulfonylurea Compounds/analysis MH - Temperature MH - Water Pollutants, Chemical/*analysis EDAT- 2005/04/16 09:00 MHDA- 2005/07/09 09:00 CRDT- 2005/04/16 09:00 PHST- 2005/04/16 09:00 [pubmed] PHST- 2005/07/09 09:00 [medline] PHST- 2005/04/16 09:00 [entrez] AID - S0021-9673(05)00216-5 [pii] AID - 10.1016/j.chroma.2005.01.100 [doi] PST - ppublish SO - J Chromatogr A. 2005 Apr 1;1069(2):281-5. doi: 10.1016/j.chroma.2005.01.100.