متبقيات بعض مبيدات الحشرات الهيدروكربونية المكلورة في تربة مناطق سودانية محدودة أو عديمة استخدام المبيدات

الملخص EN

Fifty soil samples were collected from seven locations representing different areas of limited or no pesticide use in the Sudan, during the period May –August, 1994.

These locations include: the irrigated riverain region of Northern State (Dongola and Elgolid), mechanized and traditional rain-fed areas in eastern and western Sudan (Elgedarif, Elmigenis, Elobeid, and Umrawaba) and the semi-desert area northwest Khartoum.

Residues of Heptachlor (in form of epoxide), DDT (in form of DDE), Dieldrin, Aldrin and HCH were determined and expressed in mg/Kg soil (PPM).

Heptachlor was detected in almost all soil samples examined.

Dieldrin was found in five locations, mechanized rain-fed area (Elgadaref), traditional rain-fed area (Elmegenis and Umrawaba) and irrigated riverain area (Dongola and Elgolid).

Aldrin was detected in soils of Dongola only, while HCH was only detected in Elgedarif soils.

No detectable level of DDT was found.

Possible environmental re-distribution factors were discussed.