Publication

Pesticide application in gardening : assessment of resulting impact on water resources quality using grab samples and pocis, case study of Loumbila lake, Burkina Faso

Luiz Felippe De Alencastro
2016
Talks

Abstract

This study proposes a comprehensive assessment of water resources contamination by pesticides in a gardening area. Multiresidue extraction procedure was developed to quantify 48 pesticides identified during field surveys. Drinking water samples were collected from traditional wells, boreholes and the lake. Levels of azadirachtin, chlorpyrifos, imidacloprid and profenofos in traditional wells exceed the threshold limit of 0.1 μg/l indicating a potential risk for the consumers. Residues of acetamiprid, atrazine, emamectin benzoate and imidacloprid were found in boreholes but in low concentrations. Levels in lake appeared to depend on seasons. Increase during the rainy season, in absence of gardening activity, suggests the contamination by other activities located upstream. In parallel, we conducted an in-situ calibration of Polar Organic Chemical Integrative Samplers (POCIS). Comparison with results from water samples shows that POCIS are suitable for measuring time weighted average concentration for atrazine and its metabolites, in environmental conditions of the study area.

Official source

https://infoscience.epfl.ch/entities/publication/69d8664b-7d08-4bd2-a2e8-290c28d414a8

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Luiz Felippe De Alencastro
2016
Talks

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/69d8664b-7d08-4bd2-a2e8-290c28d414a8

About this result

Related concepts (32)

Risk assessment

Risk assessment determines possible mishaps, their likelihood and consequences, and the tolerances for such events. The results of this process may be expressed in a quantitative or qualitative fashion. Risk assessment is an inherent part of a broader risk management strategy to help reduce any potential risk-related consequences. More precisely, risk assessment identifies and analyses potential (future) events that may negatively impact individuals, assets, and/or the environment (i.e. hazard analysis).

Water quality

Water quality refers to the chemical, physical, and biological characteristics of water based on the standards of its usage. It is most frequently used by reference to a set of standards against which compliance, generally achieved through treatment of the water, can be assessed. The most common standards used to monitor and assess water quality convey the health of ecosystems, safety of human contact, extent of water pollution and condition of drinking water.

Gardening

Gardening is the practice of growing and cultivating plants as part of horticulture. In gardens, ornamental plants are often grown for their flowers, foliage, or overall appearance; useful plants, such as root vegetables, leaf vegetables, fruits, and herbs, are grown for consumption, for use as dyes, or for medicinal or cosmetic use. Gardening ranges in scale from fruit orchards, to long boulevard plantings with one or more different types of shrubs, trees, and herbaceous plants, to residential back gardens including lawns and foundation plantings, all the way to container gardens grown inside or outside.

Related publications (22)

Pesticide application in gardening : assessment of resulting impact on water resources quality using grab samples and pocis, case study of Loumbila lake, Burkina Faso

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