TY - JOUR T1 - HPLC-UV and HPLC-MSn multiresidue determination of amidosulfuron, azimsulfuron, nicosulfuron, rimsulfuron, thifensulfuron methyl, tribenuron methyl and azoxystrobin in surface waters. AU - Polati,S, AU - Bottaro,M, AU - Frascarolo,P, AU - Gosetti,F, AU - Gianotti,V, AU - Gennaro,M C, Y1 - 2006/07/22/ PY - 2006/05/10/received PY - 2006/07/13/revised PY - 2006/07/13/accepted PY - 2007/8/29/pubmed PY - 2007/8/29/medline PY - 2007/8/29/entrez SP - 146 EP - 51 JF - Analytica chimica acta JO - Anal Chim Acta VL - 579 IS - 2 N2 - The paper presents a new HPLC method, with UV and MS(n) detection, for the determination of seven pesticides, including the sulfonylurea herbicides amidosulfuron, azimsulfuron, nicosulfuron, rimsulfuron, thifensulfuron methyl, tribenuron methyl, and the fungicide azoxystrobin characterised by a methoxyacrilate structure. The methodology consists of a preconcentration/SPE (solid phase extraction) step and HPLC-UV (240 nm detection wavelength)-MS(n) analysis. Under the optimised conditions and after a 1000/1 preconcentration factor, the limits of detection were lower than 14.5 ng L(-1) for UV detection and lower than 8.1 ng L(-1) for MS detection. The limits of quantification were lower than 48.3 ng L(-1) in UV detection and than 26.9 ng L(-1) in MS(n) detection. The analysis of two samples, spiked with a mixture of the pesticides at threshold level concentrations, gave more than 60% recovery. SN - 1873-4324 UR - https://www.unboundmedicine.com/medline/citation/17723738/HPLC_UV_and_HPLC_MSn_multiresidue_determination_of_amidosulfuron_azimsulfuron_nicosulfuron_rimsulfuron_thifensulfuron_methyl_tribenuron_methyl_and_azoxystrobin_in_surface_waters_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0003-2670(06)01550-9 DB - PRIME DP - Unbound Medicine ER -