[Mango leaves (Manguifera indica, Anacardiacea) used as biomarker of pollution by pp'Dichlorodiphenyltrichloroethane (pp'DDT)].
Dichlorodiphenyltrichloroethane (DDT), organochlorine pesticide, byanother way cumulative pesticide is banned in mostdeveloped countries. Whatever, it is still used in many countries in the Third World. This work consist to check whether this chemical compound is still used in Senegal. The biomarker of pollution by this pesticide for this research was mango leaves (mango tree is widespread in Senegal) open to accumulate halogenated hydrocarbons. Leaves sample were taken in many sites in the centerline of Dakar-Thiès (Senegal), then analysed by gas chromatography. The results allowed to note the presence of DDT and its metabolites [(dichlorodiphenyltrichloroethylen (DDE), (dichlorodiphenyltrichloroethane (DDD)] in most of samples. The comparison of DDT content in relation to those of the principal metabolite allowed to make the difference according to sample sites, an old contamination of an utilisation more or less recent of this pesticide. From those results, we can conclude that DDT, typical pesticide by its big persistence is still used in some spherical zones in this country, in particular in farming gardening zones.
Diouf
A
A
Laboratoire de Chimie Analytique et de Toxicologie, Faculté de Médecine, Pharmacie et d'Odonstomatologie, Université Cheikh Anta DIOP (UCAD), Dakar, Sénégal.
Diop
Y M
YM
Ndiaye
B
B
Fall
M
M
Sarr
D
D
Thiam
A
A
Barry
O
O
Thiaw
C
C
Ba
D
D
Ciss
M
M
D001673:Biodegradation, Environmental; D002849:Chromatography, Gas; D003634:DDT / Q000032:analysis* / Q000302:isolation & purification / Q000378:metabolism; D003906:Developing Countries; D003633:Dichlorodiphenyl Dichloroethylene / Q000032:analysis; D003632:Dichlorodiphenyldichloroethane / Q000032:analysis; D004784:Environmental Monitoring / Q000379:methods* / Q000592:standards; D004785:Environmental Pollutants / Q000032:analysis* / Q000302:isolation & purification / Q000378:metabolism; D006801:Humans; D031022:Mangifera / Q000737:chemistry*; D016488:Medicine, African Traditional; D010573:Pesticide Residues / Q000737:chemistry* / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry; D012423:Rural Health; D012675:Senegal; D013997:Time Factors; D014504:Urban Health
D004785:Environmental Pollutants; D010573:Pesticide Residues; D003633:Dichlorodiphenyl Dichloroethylene; D003634:DDT; D003632:Dichlorodiphenyldichloroethane