TY - JOUR T1 - Liquid chromatographic-diode-array detection multiresidue determination of rice herbicides in drinking and paddy-field water. AU - Roehrs,Rafael, AU - Zanella,Renato, AU - Pizzuti,Ionara, AU - Adaime,Martha B, AU - Pareja,Lucía, AU - Niell,Silvina, AU - Cesio,María V, AU - Heinzen,Horacio, PY - 2009/9/1/entrez PY - 2009/9/1/pubmed PY - 2009/9/25/medline SP - 1190 EP - 5 JF - Journal of AOAC International JO - J AOAC Int VL - 92 IS - 4 N2 - A sensitive, rapid, and simple multiresidue method for the simultaneous determination of six postemergence herbicides currently used in rice cultivation--metsulfuron methyl, bensulfuron methyl, pyrazosulfuron ethyl, bentazone, bispyribac sodium, and cyhalofop butyl--in drinking and paddy-field water is presented. Water samples were extracted with solid-phase extraction cartridges. Final determination was made by LC with diode-array detection. The extraction efficiencies of C18 and HLB cartridges were compared. The average recovery obtained for these compounds for the lowest spiked level (0.1 microg/L) varied from 70 to 122% for C18 and 75-119% for HLB, with RSDs of 11 and 8.3%, respectively. The method had good linearity, and the lower detection limit for the pesticides studied varied from 0.03 to 0.04 microg/L. The proposed method was also tested in paddy-field water, with recovery studies giving good results with low RSDs at 1.0 microg/L. SN - 1060-3271 UR - https://www.unboundmedicine.com/medline/citation/19714989/Liquid_chromatographic_diode_array_detection_multiresidue_determination_of_rice_herbicides_in_drinking_and_paddy_field_water_ DB - PRIME DP - Unbound Medicine ER -