TY - JOUR
T1 - Analysis of herbicides in water using temperature-responsive chromatography and an aqueous mobile phase
AU - Ayano, Eri
AU - Okada, Yuji
AU - Sakamoto, Chikako
AU - Kanazawa, Hideko
AU - Okano, Teruo
AU - Ando, Masanori
AU - Nishimura, Tetsuji
N1 - Funding Information:
This study was supported by a grant from the Ministry of Health, Labour and Welfare of Japan.
PY - 2005/4/1
Y1 - 2005/4/1
N2 - 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 μg l-1.
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 μg l-1.
KW - LC
KW - Poly(N-isopropylacrylamide)
KW - Sulfonylurea herbicides
KW - Temperature-responsive chromatography
KW - Urea herbicides
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U2 - 10.1016/j.chroma.2005.01.100
DO - 10.1016/j.chroma.2005.01.100
M3 - Article
C2 - 15830956
AN - SCOPUS:15244361516
SN - 0021-9673
VL - 1069
SP - 281
EP - 285
JO - Journal of Chromatography A
JF - Journal of Chromatography A
IS - 2
ER -