PMID- 26537372 OWN - NLM STAT- MEDLINE DCOM- 20160914 LR - 20191210 IS - 1432-0800 (Electronic) IS - 0007-4861 (Linking) VI - 96 IP - 1 DP - 2016 Jan TI - Estimated Levels of Environmental Contamination and Health Risk Assessment for Herbicides and Insecticides in Surface Water of Ceara, Brazil. PG - 90-5 LID - 10.1007/s00128-015-1686-2 [doi] AB - Methodology using solid phase extraction and high performance liquid chromatography (SPE-C18/HPLC-DAD) was applied to pesticide determinations in ten water reservoirs in the semidarid region of northeastern Brazil. The validated method was suitable for determination of herbicides and insecticide in surface water. The recovery efficiency of atrazine, methyl-parathion and simazine was approximately 70%. The method also showed good linearity and selectivity with correlation coefficients (R) greater than 0.99. The limits of detection were below the maximum residue limits (MRLs) established by government agencies. Studied reservoirs showed presence of atrazine at mean levels from 7.0 to 15.0 microg/L. Simazine and methyl parathion were not detected during the period. The atrazine levels measured from this semiarid region are of the same magnitude as those found in regions with moderate to high agricultural activity. According to detected atrazine concentrations, the annual health risk to humans was insignificant. However, the control of herbicides is important to maintain the quality of water in the reservoirs of Ceara, Brazil. FAU - Sousa, Anayla S AU - Sousa AS AD - Department of Analytical Chemistry and Physical Chemistry, Federal University of Ceara, R. Humberto Monte S/N, Pici, Fortaleza, Ceara, CEP 60451-970, Brazil. FAU - Duavi, Wersangela C AU - Duavi WC AD - Marine Sciences Institute, Federal University of Ceara, Av. Abolicao, 3207-Meireles, Fortaleza, Ceara, CEP 60165-081, Brazil. FAU - Cavalcante, Rivelino M AU - Cavalcante RM AD - Marine Sciences Institute, Federal University of Ceara, Av. Abolicao, 3207-Meireles, Fortaleza, Ceara, CEP 60165-081, Brazil. FAU - Milhome, Maria Aparecida L AU - Milhome MA AD - Federal Institute of Education Science and Technology of Ceara, Rodovia Iguatu/Varzea Alegre, Km 05 - Vila Cajazeiras, Iguatu, CE, CEP 63500-00, Brazil. FAU - do Nascimento, Ronaldo F AU - do Nascimento RF AD - Department of Analytical Chemistry and Physical Chemistry, Federal University of Ceara, R. Humberto Monte S/N, Pici, Fortaleza, Ceara, CEP 60451-970, Brazil. ronaldo@ufc.br. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Validation Study DEP - 20151104 PL - United States TA - Bull Environ Contam Toxicol JT - Bulletin of environmental contamination and toxicology JID - 0046021 RN - 0 (Herbicides) RN - 0 (Insecticides) RN - 0 (Pesticides) RN - 0 (Water Pollutants, Chemical) RN - 059QF0KO0R (Water) RN - QJA9M5H4IM (Atrazine) RN - SG0C34SMY3 (Simazine) SB - IM MH - Agriculture MH - Atrazine/analysis MH - Brazil MH - Chromatography, High Pressure Liquid MH - Environmental Pollution/analysis MH - Herbicides/*analysis MH - Humans MH - Insecticides/*analysis MH - Pesticides/analysis MH - Risk Assessment MH - Simazine/analysis MH - Solid Phase Extraction/methods MH - Water/analysis/chemistry MH - Water Pollutants, Chemical/*analysis MH - Water Supply/*statistics & numerical data OTO - NOTNLM OT - Contamination OT - Health risk OT - Pesticides OT - Solid phase extraction OT - Water resources EDAT- 2015/11/06 06:00 MHDA- 2016/09/15 06:00 CRDT- 2015/11/06 06:00 PHST- 2015/04/26 00:00 [received] PHST- 2015/10/26 00:00 [accepted] PHST- 2015/11/06 06:00 [entrez] PHST- 2015/11/06 06:00 [pubmed] PHST- 2016/09/15 06:00 [medline] AID - 10.1007/s00128-015-1686-2 [pii] AID - 10.1007/s00128-015-1686-2 [doi] PST - ppublish SO - Bull Environ Contam Toxicol. 2016 Jan;96(1):90-5. doi: 10.1007/s00128-015-1686-2. Epub 2015 Nov 4.