Abstract
An effective spectrophotometric determination of palladium with 1-(2-pyridylazo)-2-naphthol (PAN) using molten naphthalene as a diluent has been studied. A green complex of palladium with PAN is formed at 90°C. In the range of pH 1.5-7.5, the complex is quantitatively extracted into molten naphthalene. The organic phase is anhydrously dissolved in CHCl3 to be determined spectrophotometrically at 678 nm against the reagent blank. Beer's law is obeyed over the concentration range of 0.5-10 ppm. The molar absorptivity and Sandell's sensitivity are 1.2 x 104 l mol-1 cm-1 and 0.0070 mg cm-2, respectively. The optimum conditions for determination are obtained. The interferences of various ions are observed in detail. The method has been applied to the determination of palladium in synthetic samples.
| Original language | English |
|---|---|
| Pages (from-to) | 837-842 |
| Number of pages | 6 |
| Journal | Talanta |
| Volume | 44 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - May 1997 |
| Externally published | Yes |
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Keywords
- Molten naphthalene
- Palladium
- Spectrophotometric
ASJC Scopus subject areas
- Analytical Chemistry
- Spectroscopy
Cite this
Spectrophotometric determination of palladium after solid-liquid extraction with 1-(2-pyridylazo)-2-naphthol at 90°C. / Gao, Jinzhang; Peng, Bo; Fan, Haiyan; Kang, Jingwan; Wang, Xudong.
In: Talanta, Vol. 44, No. 5, 05.1997, p. 837-842.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Spectrophotometric determination of palladium after solid-liquid extraction with 1-(2-pyridylazo)-2-naphthol at 90°C
AU - Gao, Jinzhang
AU - Peng, Bo
AU - Fan, Haiyan
AU - Kang, Jingwan
AU - Wang, Xudong
PY - 1997/5
Y1 - 1997/5
N2 - An effective spectrophotometric determination of palladium with 1-(2-pyridylazo)-2-naphthol (PAN) using molten naphthalene as a diluent has been studied. A green complex of palladium with PAN is formed at 90°C. In the range of pH 1.5-7.5, the complex is quantitatively extracted into molten naphthalene. The organic phase is anhydrously dissolved in CHCl3 to be determined spectrophotometrically at 678 nm against the reagent blank. Beer's law is obeyed over the concentration range of 0.5-10 ppm. The molar absorptivity and Sandell's sensitivity are 1.2 x 104 l mol-1 cm-1 and 0.0070 mg cm-2, respectively. The optimum conditions for determination are obtained. The interferences of various ions are observed in detail. The method has been applied to the determination of palladium in synthetic samples.
AB - An effective spectrophotometric determination of palladium with 1-(2-pyridylazo)-2-naphthol (PAN) using molten naphthalene as a diluent has been studied. A green complex of palladium with PAN is formed at 90°C. In the range of pH 1.5-7.5, the complex is quantitatively extracted into molten naphthalene. The organic phase is anhydrously dissolved in CHCl3 to be determined spectrophotometrically at 678 nm against the reagent blank. Beer's law is obeyed over the concentration range of 0.5-10 ppm. The molar absorptivity and Sandell's sensitivity are 1.2 x 104 l mol-1 cm-1 and 0.0070 mg cm-2, respectively. The optimum conditions for determination are obtained. The interferences of various ions are observed in detail. The method has been applied to the determination of palladium in synthetic samples.
KW - Molten naphthalene
KW - Palladium
KW - Spectrophotometric
UR - http://www.scopus.com/inward/record.url?scp=0030955488&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030955488&partnerID=8YFLogxK
U2 - 10.1016/S0039-9140(96)02122-4
DO - 10.1016/S0039-9140(96)02122-4
M3 - Article
VL - 44
SP - 837
EP - 842
JO - Talanta
JF - Talanta
SN - 0039-9140
IS - 5
ER -