آلودگي صنعتي سرب در اطراف صنايع نفت و پتروشيمي واقع در اطراف شيراز با تجزيه موي گاوها

Hair lead content of cattle as indication of lead poisoning, around Shiraz oil and petrochemical industries

Lead is one of the oldest metals known to man and Industrial pollution is one of the most important sources of lead. f lair lead levels are diagnostically useful for lead pollution around oil and petrochemical industries. Hair samples (67 in each season for each species) were obtained from cattle in a radius of one to ten kilometers of Shiraz oil and petrochemical industries. Hair samples of different species (34 in each season), which were obtained, far away from these industries and not close to main roads served as control samples. Hair samples were subsequently digested and analyzed for their lead content by atomic absorption spectrophotometry. Overally, results revealed that the mean hair lead content of cattle (6.5+1.2 ppm) around Shirazʹs oil industries (within radius of 1.5 Kilometers) were significantly higher than mean hair lead content of cattle (3.1+0.9 ppm), around Shirazʹs petrochemical industries (p<0.05). Mean hair lead content of control cases throughout the year were 1.1+0,3 ppm, 4.48+1.09 ppm and 3.37+0.35 ppm Which were significantly lower than mean hair lead content of cattle around Shirazʹs oil and petrochemical industries (p<0.05). These levels show that lead pollution around Shirazʹs oil industries can he a serious problem and must be considered in future.