Tags

Type your tag names separated by a space and hit enter

Factors responsible for rapid dissipation of acidic herbicides in the coastal lagoons of the Camargue (Rhône River Delta, France).
Sci Total Environ. 2011 Jan 01; 409(3):582-7.ST

Abstract

This study was aimed at investigating which processes cause acidic herbicides (e.g., bentazone, MCPA and dichlorprop) to rapidly disappear in the lagoons of the Rhône delta, which are peculiar brackish and shallow aquatic environments. The use of the model MASAS (Modeling of Anthropogenic Substances in Aquatic Systems) revealed that sorption, sedimentation, volatilization, flushing and abiotic hydrolysis had a minor role in the attenuation of the investigated herbicides. Laboratory scale biodegradation and photodegradation studies were conducted to better assess the significance of these two processes in the natural attenuation of herbicides in brackish (lagoons) waters with respect to fresh waters (canals draining paddy fields). Herbicide biodegradation rates were significantly lower in lagoon water than in canal water. Consequently, photodegradation was the main dissipation route of all investigated herbicides. The contribution of indirect photolysis was relevant for MCPA and dichlorprop while direct photolysis dominated for bentazone removal. There is a need to further investigate the identity of phototransformation products of herbicides in lagoons.

Authors+Show Affiliations

Laboratoire Chimie Provence, Aix-Marseille Universités-CNRS (UMR 6264), 3 Place Victor Hugo, 13331 Marseille Cedex 3, France.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21075422

Citation

Al Housari, Fadi, et al. "Factors Responsible for Rapid Dissipation of Acidic Herbicides in the Coastal Lagoons of the Camargue (Rhône River Delta, France)." The Science of the Total Environment, vol. 409, no. 3, 2011, pp. 582-7.
Al Housari F, Höhener P, Chiron S. Factors responsible for rapid dissipation of acidic herbicides in the coastal lagoons of the Camargue (Rhône River Delta, France). Sci Total Environ. 2011;409(3):582-7.
Al Housari, F., Höhener, P., & Chiron, S. (2011). Factors responsible for rapid dissipation of acidic herbicides in the coastal lagoons of the Camargue (Rhône River Delta, France). The Science of the Total Environment, 409(3), 582-7. https://doi.org/10.1016/j.scitotenv.2010.10.036
Al Housari F, Höhener P, Chiron S. Factors Responsible for Rapid Dissipation of Acidic Herbicides in the Coastal Lagoons of the Camargue (Rhône River Delta, France). Sci Total Environ. 2011 Jan 1;409(3):582-7. PubMed PMID: 21075422.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Factors responsible for rapid dissipation of acidic herbicides in the coastal lagoons of the Camargue (Rhône River Delta, France). AU - Al Housari,Fadi, AU - Höhener,Patrick, AU - Chiron,Serge, Y1 - 2010/11/13/ PY - 2010/07/16/received PY - 2010/10/14/revised PY - 2010/10/19/accepted PY - 2010/11/16/entrez PY - 2010/11/16/pubmed PY - 2011/1/15/medline SP - 582 EP - 7 JF - The Science of the total environment JO - Sci Total Environ VL - 409 IS - 3 N2 - This study was aimed at investigating which processes cause acidic herbicides (e.g., bentazone, MCPA and dichlorprop) to rapidly disappear in the lagoons of the Rhône delta, which are peculiar brackish and shallow aquatic environments. The use of the model MASAS (Modeling of Anthropogenic Substances in Aquatic Systems) revealed that sorption, sedimentation, volatilization, flushing and abiotic hydrolysis had a minor role in the attenuation of the investigated herbicides. Laboratory scale biodegradation and photodegradation studies were conducted to better assess the significance of these two processes in the natural attenuation of herbicides in brackish (lagoons) waters with respect to fresh waters (canals draining paddy fields). Herbicide biodegradation rates were significantly lower in lagoon water than in canal water. Consequently, photodegradation was the main dissipation route of all investigated herbicides. The contribution of indirect photolysis was relevant for MCPA and dichlorprop while direct photolysis dominated for bentazone removal. There is a need to further investigate the identity of phototransformation products of herbicides in lagoons. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/21075422/Factors_responsible_for_rapid_dissipation_of_acidic_herbicides_in_the_coastal_lagoons_of_the_Camargue__Rhône_River_Delta_France__ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(10)01121-6 DB - PRIME DP - Unbound Medicine ER -