TY - JOUR
T1 - Extractive-spectrophotometric determination of traces of copper(II) with 4-(p-nitrophenylazo)-2-amino-3-pyridinol
AU - Salillas, M.
AU - Tarín, P.
AU - Blanco, M.
PY - 1985/1/1
Y1 - 1985/1/1
N2 - A new extractive-spectrophotometric method for determination of copper(II) with 4-(p-nitrophenylazo)-2-amino-3-pyridinol is proposed. The established stoichiometry and extraction constant are 2:1 ligand:metal and -1.55, respectively. The molar absorptivity of the complex is 5.19 × 104 liters mol-1 cm-1 at 560 nm and Sandell's sensitivity is 1.2 ng cm-2. The best conditions for determination and effect of other ions are studied. The method proposed is applied in the determination of copper in whisky, liver of fish, and seawater. © 1985.
AB - A new extractive-spectrophotometric method for determination of copper(II) with 4-(p-nitrophenylazo)-2-amino-3-pyridinol is proposed. The established stoichiometry and extraction constant are 2:1 ligand:metal and -1.55, respectively. The molar absorptivity of the complex is 5.19 × 104 liters mol-1 cm-1 at 560 nm and Sandell's sensitivity is 1.2 ng cm-2. The best conditions for determination and effect of other ions are studied. The method proposed is applied in the determination of copper in whisky, liver of fish, and seawater. © 1985.
UR - https://www.scopus.com/pages/publications/46549098526
U2 - 10.1016/0026-265X(85)90010-4
DO - 10.1016/0026-265X(85)90010-4
M3 - Article
SN - 0026-265X
VL - 31
SP - 61
EP - 69
JO - Microchemical Journal
JF - Microchemical Journal
IS - 1
ER -