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Continue to ChatCopper, iron, and lead levels in fertilizer and water samples: separation and preconcentration on multiwaled carbon nanotubes - https://avesis.erciyes.edu.tr/yayin/c40be210-f7ff-46fd-9e26-8e0812db9edf/copper-iron-and-lead-levels-in-fertilizer-and-water-samples-separation-and-preconcentration-on-multiwaled-carbon-nanotubes