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.
N1 - Funding Information:
The authors are grateful to “ Direzione Pianificazione delle Risorse Idriche ”, Regione Piemonte (Italy) for the financial support.
PY - 2006/10/10
Y1 - 2006/10/10
N2 - The paper presents a new HPLC method, with UV and MSn 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)-MSn 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 MSn detection. The analysis of two samples, spiked with a mixture of the pesticides at threshold level concentrations, gave more than 60% recovery.
AB - The paper presents a new HPLC method, with UV and MSn 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)-MSn 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 MSn detection. The analysis of two samples, spiked with a mixture of the pesticides at threshold level concentrations, gave more than 60% recovery.
KW - Azoxystrobin
KW - High pressure liquid chromatography
KW - Mass spectrometry detection Multiresidue determination
KW - Sulfonylurea herbicides
KW - Surface waters
KW - Ultra-violet detection
UR - https://www.scopus.com/pages/publications/33749252696
U2 - 10.1016/j.aca.2006.07.034
DO - 10.1016/j.aca.2006.07.034
M3 - Article
SN - 0003-2670
VL - 579
SP - 146
EP - 151
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
IS - 2
ER -