Organochlorine Pesticides (OCPs) are cyclic chlorinated hydrocarbons that are toxic and
can bioaccumulate in the environment. Although, its usehas been prohibited in many
countries including Nigeria; nevertheless they are still used extensively for pests control
by cocoa (Theobroma cacaoL.) farmers in Nigeria. In addition, OCPs residual
concentrations among other factors in cocoa bean influences their price in the World
market. Therefore, this study was designed toassess the persistence of OCPs in cocoa
plants, soil, surface water, and sediments in selected cocoa farms in Southwestern Nigeria.
The cocoa farms selected for this study were classified as; farms where OCPs have been
used and discontinued for 15 years [Cocoa Research Institute of Nigeria, Ibadan [(CRIN
(I&II)]; for 3–5 years (Sabo, Ondo); still in use [(Igba, Ondo) and (Sore-Bale, Ogun)].
Sampling was carried out during wet and dry seasons between November, 2009 and
September, 2011. A total of 480 samples were randomly collected comprising: 120 soils
[(0-15 and 15-30 cm), (CRIN I&II-48; Sore-Bale-24; Sabo-24; Igba-24)]; 60surface water
(CRIN I&II-24; Sore-Bale-12; Sabo-12; Igba-12); 60 sediments (CRIN I&II-24; SoreBale-12; Sabo-12; Igba-12); 60 each of leaves, bark, pods and seeds (CRIN I&II-24; SoreBale-12; Sabo-12; Igba-12, per matrix)for analysis. Control samples were collected 5.0
km from CRIN I, where OCPs were not used. Terrestrial Field Dissipation (TFD) and
adsorption-desorption studies for OCP were done by EPA/OECD methods using
benzodioxathiepin-3-oxide). Extractions and clean-up of OCPs were done using standard
analytical methods. TheOCPs were determined using Gas Chromatography-Mass
Spectrophotometric (GC-MS) technique. Data were compared with WHO/FAO limits and
analysed using correlation and descriptive statistics.
The Public Access, L (2021). Persistence And Accumulation Of Organochlorine Pesticides Inselectedcocoafarms In Southwestern Nigeria. Afribary.com: Retrieved April 11, 2021, from https://afribary.com/works/persistence-and-accumulation-of-organochlorine-pesticides-inselectedcocoafarms-in-southwestern-nigeria
Library, The Public Access. "Persistence And Accumulation Of Organochlorine Pesticides Inselectedcocoafarms In Southwestern Nigeria" Afribary.com. Afribary.com, 05 Apr. 2021, https://afribary.com/works/persistence-and-accumulation-of-organochlorine-pesticides-inselectedcocoafarms-in-southwestern-nigeria . Accessed 11 Apr. 2021.
Library, The Public Access. "Persistence And Accumulation Of Organochlorine Pesticides Inselectedcocoafarms In Southwestern Nigeria". Afribary.com, Afribary.com, 05 Apr. 2021. Web. 11 Apr. 2021. < https://afribary.com/works/persistence-and-accumulation-of-organochlorine-pesticides-inselectedcocoafarms-in-southwestern-nigeria >.
Library, The Public Access. "Persistence And Accumulation Of Organochlorine Pesticides Inselectedcocoafarms In Southwestern Nigeria" Afribary.com (2021). Accessed April 11, 2021. https://afribary.com/works/persistence-and-accumulation-of-organochlorine-pesticides-inselectedcocoafarms-in-southwestern-nigeria