Study of some systematic errors during the determination of the total selenium and some of its ionic species in biological materials.
D000143:Acids; D000818:Animals; D006801:Humans; D009566:Nitrates; D017942:Nitric Acid; D012643:Selenium / Q000032:analysis*
D000143:Acids; D009566:Nitrates; D017942:Nitric Acid; D012643:Selenium