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Organophosphorus and Organochlorine Pesticides Bioaccumulation byEichhornia crassipesin Irrigation Canals in an Urban Agricultural System
- Source :
- International Journal of Phytoremediation. 17:701-708
- Publication Year :
- 2015
- Publisher :
- Informa UK Limited, 2015.
-
Abstract
- A natural wetland in Mexico City Metropolitan Area is one of the main suppliers of crops and flowers, and in consequence its canals hold a high concentration of organochlorine (OC) and organophosphorus (OP) pesticides. There is also an extensive population of water hyacinth (Eichhornia crassipes), which is considered a plague; but literature suggests water hyacinth may be used as a phytoremediator. This study demonstrates bioaccumulation difference for the OC in vivo suggesting their bioaccumulation is ruled by their log K(ow), while all the OP showed bioaccumulation regardless of their log K(ow). The higher bioaccumulation factors (BAF) of the accumulated OC pesticides cannot be explained by their log K(ow), suggesting that the OC pesticides may also be transported passively into the plant. Translocation ratios showed that water hyacinth is an accumulating plant with phytoremediation potential for all organophosphorus pesticides studied and some organochlorine pesticides. An equation for free water surface wetlands with floating macrophytes, commonly used for the construction of water-cleaning wetlands, showed removal of the pesticides by the wetland with room for improvement with appropriate management.
- Subjects :
- Eichhornia crassipes
Irrigation
Agricultural Irrigation
Wetland
Plant Science
Water Purification
Toxicology
Organophosphorus Compounds
Hydrocarbons, Chlorinated
Environmental Chemistry
Cities
Pesticides
Urban agriculture
Water pollution
Mexico
geography
geography.geographical_feature_category
biology
Ecology
Pesticide
biology.organism_classification
Pollution
Biodegradation, Environmental
Eichhornia
Bioaccumulation
Environmental science
Water quality
Water Pollutants, Chemical
Subjects
Details
- ISSN :
- 15497879 and 15226514
- Volume :
- 17
- Database :
- OpenAIRE
- Journal :
- International Journal of Phytoremediation
- Accession number :
- edsair.doi.dedup.....8451b3e78b9229db1c62bb4e0ea43a40