Ecological Studies on the Hazard Uses of Human Sewage at Egyptian Environment
Human sewage wastewaters and sewage sludge has been utilized in areas around Assiut City,Egypt,for irrigation as a source of plant nutrients and soil amendments.The problem of this practice is the preaence of considerable concentrations of heavy metals which considered harmful to plants and animals.Samples of water 5,10,Soil 4,7 and dietary green pastures 5,9 were collected from non-polluted and polluted areas respectively.Blood samples were collected from control 12 and exposed 25 buffaloe calves 6-9 months ages.Human sewage was the source of pollution at some villages near Assiut.Non polluted areas were clean and irrigated with water from River Nile,lead,cadmium,iron,copper and Zinc were determined using atomic absorption spectrophotometer.Significant elevation (P<0.05)was reported in mean values of lead 0.05+0.001,1.37+0.03 and 14.12 +2.11 ppm in water,soil and dietary plants respectively at polluted areas.The same trend was observed in cadmium.Slight elevations were reparted in the values of iron,copper and zinc in dietary plants at polluted areas.Blood of exposed animals had higher concentration of lead (>6 folds)and cadmium (> 9 folds)than corresponding control values.The biometals Fe,cu and znc had lower values in blood of exposed animals.
human sewage buffalo calves heavy metals
Mottelib.A.A Mohamed,A.E.A Bebawy,J.T
Dept of Anim.Med.,Fac.of Vet.Med.,Assiut Univ.,Assiut Egypt Dept of Anim Med.Fac.of Vet.Med.,South Vally Univ.,Qena Egypt Animal Health and Res-Instit.Assiut,Egypt
国际会议
XVIth International Congress on Animal Hygiene(第十六届动物卫生国际会议(ISAH 2013))
南京
英文
378-379
2013-05-05（万方平台首次上网日期，不代表论文的发表时间）