o-(p-Toluylsulfonamido)aniline (T-Sulfonamidine) as a New Type of Analytical Reagent Gravimetric Determination of Cupric Ion

1960 ◽  
Vol 32 (10) ◽  
pp. 1342-1344 ◽  
Author(s):  
J. H. Billman ◽  
N. S. Janetos ◽  
Robert. Chernin
Keyword(s):  
Cupric Ion ◽  
Gravimetric Determination ◽  
New Type ◽  
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

1,2,3-Phenyloxyamidine. New type of analytical reagent solvent extraction and spectrophotometric determination of vanadium(V)

1974 ◽  
Vol 46 (11) ◽  
pp. 1609-1610 ◽  
Author(s):  
Kodela. Satyanarayana ◽  
Rajendra K. Mishra
Keyword(s):  
Solvent Extraction ◽  
Spectrophotometric Determination ◽  
New Type ◽  
Analytical Reagent

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.

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 2-Hydroxy-4-Methoxybenzophenone Oxime as an Analytical Reagent for Copper(II)

2005 ◽  
Vol 2 (2) ◽  
pp. 161-164 ◽  
Author(s):  
Miss Krishna Purohit ◽  
K. K. Desai
Keyword(s):  
Molar Absorptivity ◽  
Complex Formation Reaction ◽  
Formation Reaction ◽  
Spectrophotometric Methods ◽  
Gravimetric Determination ◽  
Analytical Reagent ◽  
Gibb’S Free Energy ◽  
The Stability ◽  
Metal Ligand

2-Hydroxy-4-methoxybenzophenoneoxime (HMBO) was developed as a new analytical reagent for the gravimetric determination of Cu(II). In pH 2.5-9.0 the reagent gives brown coloured precipitate with Cu(II). Spectrophotometric methods revealed that the stoichiometry of the complex is 1:2 (metal: ligand). Beer's law is obeyed up to 31.75 ppm of Cu(II). Molar absorptivity and Sandell's sensitivity at 400 nm were found to be 7.0×102L mol-1cm-1and 0.090 μg/cm2respectively. The stability constant of Cu(II)-HMBO complex is found to be 6.13×109. Gibb’s free energy change for complex formation reaction was found to be -13.93 Kcal/mol. The reagent can be used for the analysis of brass.

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

Trial production of γ-type energy filtering TEM

1995 ◽  
Vol 53 ◽  
pp. 604-605
Author(s):  
Y. Taniguchi ◽  
E. Nakazawa ◽  
S. Taya
Keyword(s):  
Magnetic Energy ◽  
Electron Optics ◽  
Electron Microscopic ◽  
Mass Spectrometers ◽  
Ion Optics ◽  
Energy Filtering ◽  
New Information ◽  
New Type ◽  
Fringing Fields

Imaging energy filters can add new information to electron microscopic images with respect to energy-axis, so-called electron spectroscopic imaging (ESI). Recently, many good results have been reported using this imaging technique. ESI also allows high-contrast observation of unstained biological samples, becoming a trend of the field of morphology. We manufactured a new type of energy filter as a trial production. This energy filter consists of two magnets, and we call γ-filter since the trajectory of electrons shows ‘γ’-shape inside the filter. We evaluated the new energyγ-filter TEM with the γ-filter.Figure 1 shows schematic view of the electron optics of the γ-type energy filter. For the determination of the electron-optics of the γ-type energy filter, we used the TRIO (Third Order Ion Optics) program which has been developed for the design of high resolution mass spectrometers. The TRIO takes the extended fringing fields (EFF) into consideration. EFF makes it difficult to design magnetic energy filters with magnetic sector fields.

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