2-Hydroxy-1-acetonaphthoneoxime as analytical reagent: Gravimetric determination of nickel and palladium

1978 ◽  
Vol 87 (8) ◽  
pp. 291-294
Author(s):  
V V Balakrishna ◽  
R C Hussain ◽  
N Appala Raju
Keyword(s):  
Gravimetric Determination ◽  
Determination Of Nickel ◽  
Analytical Reagent

Benzenephosphinic Acid as Analytical Reagent Gravimetric Determination of Ferric Iron

1957 ◽  
Vol 29 (1) ◽  
pp. 109-113 ◽  
Author(s):  
J. E. Banks ◽  
D. A. Skoog
Keyword(s):  
Ferric Iron ◽  
Gravimetric Determination ◽  
Analytical Reagent

scholarly journals Third Derivative Spectrophotometric Method for Simultaneous Determination of Copper and Nickel Using 6-(2-Naphthyl)-2, 3-dihydro-1,2,4- triazine-3-thione

2011 ◽  
Vol 8 (2) ◽  
pp. 587-593 ◽  
Author(s):  
Maliheh Barazandeh Tehrani ◽  
Effat Souri
Keyword(s):  
Simultaneous Determination ◽  
Spectrophotometric Method ◽  
Limit Of Detection ◽  
Alloy Sample ◽  
Zero Crossing ◽  
Determination Of Nickel ◽  
Analytical Reagent ◽  
Third Derivative ◽  
Determination Of Copper

A simple and sensitive derivative spectrophotometric method for simultaneous determination of nickel and copper using 6-(2- naphthyl)-2,3-dihydro-1,2,4-triazine-3-thione (NDTT) as a selective analytical reagent was developed. The complexes of metal ions with NDTT were formed immediately in basic media and extracted with chloroform. The zero-crossing measurement technique was found suitable for the direct measurement of the third-derivative value of Ni-NDTT and Cu-NDTT at 501 and 472 nm respectively. Beer’s law is obeyed in the concentration range 1-30 μg/mL for both cations with different ratios. The limit of detection was 0.26 μg/mL and 0.13 μg/mL for copper and nickel respectively. The within day and between day variations showed coefficient of variation (CV%) values less than 2.80 and 2.97 for copper and nickel respectively. The error of the determination method did not exceed 6.50%. Analysis of alloy sample showed that this method can be successfully used for simultaneous determination of Cu and Ni in real samples.

scholarly journals 2-Hydroxy-5-methylbenzophenone oxime(HMBO) as an Analytical Reagent for Gravimetric Determination of Cu(II)

2007 ◽  
Vol 4 (1) ◽  
pp. 97-102 ◽  
Author(s):  
S. K. Shingadia ◽  
K. K. Desai
Keyword(s):  
Copper Ion ◽  
Molar Absorptivity ◽  
Ratio Method ◽  
Formation Reaction ◽  
Gravimetric Determination ◽  
Analytical Reagent ◽  
Gibb’S Free Energy ◽  
The Stability ◽  
Job's Method

2-Hydroxy-5-methylbenzophenone oxime (HMBO) was developed as a new analytical reagent for the gravimetric determination of divalent copper ion. In pH rang of 3.0 to 6.0, the reagent gives a buff colored precipitate with Cu(II). Job’s method and mole ratio method revealed that the stoichiometry of the complex is 1:2 (metal: ligand). Beer’s law is obeyed up to 61.25 ppm of Cu(II). Molar absorptivity and Sandell’s sensitivity at 400 nm were found to be 6.32 × 102L mol-1cm-1and 0.359 μg/cm2respectively. The stability constant of Cu(II)-HMBO complex is found to be 2.43 × 109. Gibb’s free energy change for complex formation reaction was found to be -12.88 Kcal/mol. The reagent can be used for the analysis of brass and alloy.

Gravimetric determination of nickel as the ternary nickel-pyridine-picrate complex

The Analyst ◽  
1982 ◽  
Vol 107 (1280) ◽  
pp. 1386 ◽  
Author(s):  
M. I. Toral ◽  
A. Morales ◽  
E. Fuentes
Keyword(s):  
Gravimetric Determination ◽  
Determination Of Nickel

scholarly journals 2-Hydroxy-4-n-propoxy-5-bromoacetophenone oxime as an Analytical Reagent for Gravimetric Determination of V(V)

2009 ◽  
Vol 6 (2) ◽  
pp. 303-307 ◽  
Author(s):  
Ambily P. Nair ◽  
J. Christine
Keyword(s):  
Molar Absorptivity ◽  
Ratio Method ◽  
Gravimetric Determination ◽  
Pentavalent Vanadium ◽  
Analytical Reagent ◽  
Gibb’S Free Energy ◽  
The Stability ◽  
Ph Range ◽  
Job's Method

2-Hydroxy-4-n-propoxy-5-bromoacetophenone oxime (HnPBAO) was developed as a new analytical reagent for the gravimetric determination of pentavalent vanadium ion. In the pH range 4.0-6.0, the reagent gave a brown coloured precipitate with V(V). Job’s method and Mole ratio method revealed that the stoichiometry of the complex is 1:1 (metal: ligand). Beer’s law is obeyed up to 20.38 ppm of V(V). Molar absorptivity and Sandells sensitivity at 450 nm were found to be 10.22 × 102L/mol/cm and 0.049 µg/cm2respectively. The stability constant of V(V)-HnPBAO complex is found to be 1.195 × 106. Gibb’s free energy change for complex formation reaction was found to be –8.34 kcal/mol. The reagent can be used for the analysis of vanadium in ferro-vanadium alloys.

scholarly journals Gravimetric determination of nickel with thenoyltrifluoroacetone and either pyridine or picoline

1970 ◽  
Vol 19 (3) ◽  
pp. 339-343 ◽  
Author(s):  
Koichi TANINO
Keyword(s):  
Gravimetric Determination ◽  
Determination Of Nickel
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