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Determination du plomb dans l'urine par spectrophotometrie d'absorption atomique
Author(s) -
Lorimier Denis F.,
FernandezGarcia José G.
Publication year - 1970
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19700530807
Subject(s) - chemistry , coprecipitation , atomic absorption spectroscopy , urine , chromatography , precipitation , spectrophotometry , nuclear chemistry , inorganic chemistry , biochemistry , physics , quantum mechanics , meteorology
Lead is assayed in urine by atomic absorption spectrophotometry after separation by coprecipitation with a CaCO 3 , HCl, (NH 4 ) 2 HPO 4 solution at pH 9. Concentration of lead and removal of interfering substances are achieved simultaneously. Fresh or old urine samples acidified with HNO 3 and thymol can be used. Precipitation is quantitative. The precision of the method is ±0,004 ppm of lead.