Low Cost Monitoring of Glyphosate in Surface Waters Using the ELISA Method: An Evaluation
| العنوان: | Low Cost Monitoring of Glyphosate in Surface Waters Using the ELISA Method: An Evaluation |
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| المؤلفون: | Ed Sverko, Aaron Todd, Paul Klawunn, Jonathan D. Byer, John Struger |
| المصدر: | Environmental Science & Technology. 42:6052-6057 |
| بيانات النشر: | American Chemical Society (ACS), 2008. |
| سنة النشر: | 2008 |
| مصطلحات موضوعية: | Hydrology, Pollution, Time Factors, Bioelectric Energy Sources, Herbicides, media_common.quotation_subject, Glycine, Enzyme-Linked Immunosorbent Assay, Fresh Water, General Chemistry, Contamination, Pesticide, chemistry.chemical_compound, chemistry, Liquid chromatography–mass spectrometry, Environmental chemistry, Glyphosate, Environmental Chemistry, Environmental science, Ethanol fuel, Water quality, Surface water, Water Pollutants, Chemical, Environmental Monitoring, media_common |
| الوصف: | Concerns have been raised in the scientific community regarding the environmental implications of a dramatic increase in corn-based ethanol production and associated increases in pesticide use. The use of glyphosate, a broad-spectrum herbicide, for corn production has increased considerably in recent years in Canada and the United States. The cost of measuring concentrations of organic contaminants in the environment using traditional wet chemistry methods can be prohibitive; especiallywhen large numbers of samples are required to quantify the spatial and temporal variability in contaminant concentrations. The goal of our study was to evaluate a cost-effective method to measure glyphosate concentrations in surface waters. The reliability of enzyme-linked immunosorbent assay (ELISA) results was evaluated against liquid chromatography tandem mass spectrometry, and linear regression results for 30 water samples from urban watersheds revealed a strong relationship (R2 = 0.88). These results suggest that ELISA methods, used in conjunction with traditional methods, represent a cost-effective approach to enhance the spatial and temporal resolution of a water quality monitoring study. Additionally, we measured a total of 739 surface water samples from over 150 sampling locations throughout Ontario using ELISA from April to October 2007. Concentrations exceeded the method detection limit of 0.1 microg/L in 33% of the samples, with a maximum concentration of 12.0 microg/L. Glyphosate showed a bimodal temporal distribution with peak concentrations occurring in late spring/early summer and fall, and did not exceed the Canadian Council of Ministers of the Environment (CCME) guideline for the protection of aquatic life (65 microg/L) in any of the samples. |
| تدمد: | 1520-5851 0013-936X |
| DOI: | 10.1021/es8005207 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2f33aeda479afa5f810983852de8d01 https://doi.org/10.1021/es8005207 |
| رقم الانضمام: | edsair.doi.dedup.....b2f33aeda479afa5f810983852de8d01 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15205851 0013936X |
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| DOI: | 10.1021/es8005207 |