المصدر: محاضرة عن (Quantitative Analysis of Agricultural Soil Extracts with ICP-) في منتدى : قسم الكيمياء (hi)(hi)(hi)(hi) :gift::gift: محاضرة عن Quantitative Analysis of Egyptian Agricultural Soil Extracts with ICP-OES Technique The Problem :x:x:x clean-up sites are overwhelming problem in Egypt 8-|8-|8-| To assess a site for contamination, background trace element levels need to be determined الملف فى المرفقات (hi)(hi)(hi)(hi)