الفهرس 
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Abstract
One hundred random samples of soft cheese products were collected from localities in Assiut city, Egypt including 30 Kareish cheese samples, 3o Domiati cheese samples and 40 Feta cheese samples. These samples were collected in clean and sterile containers and transported to the laboratory for estimation of lead levels. The digestion procedure and analysis of the samples was carried out in the central laboratory, Faculty of Veterinary Medicine, Assiut University. The digest, blanks and standard solutions were aspirated by using ZEEnit 700P Atomic Absorption Spectrophotometer with Graphite Furance Unit (AASG) and analyzed for the detection and measurement of lead.
The obtained results revealed that the incidence of lead in Kareish, Domiati and feta cheese samples were 26 (86.67%), 26 (86.67%) and 34 (85%) respectively.
In Kareish cheese samples the minimum and maximum levels of lead were 0.002 and 0.9 mg/kg, respectively, out of 30 tested samples with average concentration 0.29 mg/kg. In Domiati cheese samples the minimum and maximum levels were 0.0032 and 1.6 mg/kg, respectively, out of 30 tested samples with average concentration 0.50 mg/kg. In Feta cheese samples the minimum and maximum levels of lead were 0.001 and 1.26 mg/kg respectively, out of 40 tested samples with average concentration 0.35 mg/kg.
The examined Kareish cheese samples showed that 23 (88.46%) out of 26 positive tested samples were above MPL for lead, while 3 (11.54%) within the value of MPL. In Domiati cheese samples showed that 22 (84.62) out of 26 positive tested samples were above MPL for lead, while 4 (15.38%) within the value of MPL. While, in Feta cheese samples showed that 28 (82.35%) out of 34 positive tested samples were above MPL for lead, while 6 (17.65%) within the value of MPL
The minimum, maximum and average values of the EDI value of lead in Kareish cheese samples were 0.00074, 0.33 and 0,106 mg/kg b.w., respectively. In Domiati cheese samples, the minimum, maximum and average values were 0.0012, 0.587 and 0.183 mg/kg b.w., respectively. In Feta cheese samples, the minimum, maximum and average values were 0.00037, 0.462 and 0.128 mg/kg b.w., respectively.
The EDI of examined Kareish cheese samples showed that 16 (53.33%) were above ADI for lead. And in Domiati cheese samples showed that 20 (66.67%) were above ADI for lead. Also, Feta cheese samples showed that 24 (60%) were above ADI for lead.
The minimum, maximum and average values of the EWI value of lead in Kareish cheese samples were 0.00518, 2.31 and 0.742 mg/kg b.w., respectively. For Domiati cheese samples, the minimum, maximum and average values were 0.0084, 4.109 and 1.281 mg/kg b.w., respectively. While, in Feta cheese samples, the minimum, maximum and average values were 0.00259, 3.234 and 0.896 mg/kg b.w., respectively.
The EWI of the examined Kareish cheese samples showed that 16 (53.33%) were above PTWI for lead. In Domiati cheese samples, 20 (66.67%) were above PTWI for lead. While Feta cheese samples showed that 24 (60%) were above PTWI for lead.