Elemental characterisation through instrumental neutron activation

Gangadhaŕan, S.; Yegnasubramanian, S.

doi:10.1007/bf02519422

Cited by 10 publications

(1 citation statement)

References 5 publications

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“…For GSP-1, our value is high and so is its Standard deviation. Amongst two Indian Standards our values are in good agreement for B-78 but it is lower for TKT-1 [27,28],…”

Section: Resultssupporting

confidence: 63%

Determination of Tantalum in Silicate Rocks by Neutron Activation Analysis and N-Benzoyl-N-Phenylhydroxylamine or Cupferron Extraction

Wankhade

Garg

1985

Radiochimica Acta

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Neutron activation analysisITantalum solvent extraction! N-benzoyl-N-phenylhydroxylamine/Dust particulate / USGS rocks reagents. The results obtained from the coprecipitation with BaS04 are also given for comparison. AbstiactA simple and selective solvent extraction procedura has been developed for complete Separation and determination of tantalum in three mica-and two coal dusts, five U.S.G.S. Standard rocks and two Indian Standard rocks. The method involves thermal neutron Irradiation, fusion, dissolution followed by solvent extraction with N-benzoyl-N-phenylhydroxylamine (BPHA) in Chloroform from tartrate medium at pH ~ 2. Cupferron was also attempted for solvent extraction in isoamyl alcohol. A comparison of results by both reagents is given. The behaviour of various ions in the extraction process was studied in both cases.

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“…For GSP-1, our value is high and so is its Standard deviation. Amongst two Indian Standards our values are in good agreement for B-78 but it is lower for TKT-1 [27,28],…”

Section: Resultssupporting

confidence: 63%

Determination of Tantalum in Silicate Rocks by Neutron Activation Analysis and N-Benzoyl-N-Phenylhydroxylamine or Cupferron Extraction

Wankhade

Garg

1985

Radiochimica Acta

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Gamma irradiation of polypropylene fibers in the presence of carbon tetrachloride

Ramanan¹,

Rao²,

Rao³

1981

J of Applied Polymer Sci

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SynopsisPolypropylene (PP) fibers have been irradiated with 6oCo y rays in the presence of carbon tetrachloride, in the absence of oxygen. Irradiations have been carried out between dose rates of 0.078 and 0.664 Mradhr, and the effects of absorbed dose and temperature on the C-Cl formation in the PP fibers have been investigated. G(C-Cl) values were higher at lower dose rate. G(HC1) values were found to be much higher than the G(C-Cl) values, and IR absorption studied indicated increasing unsaturation with increasing dose. The number average molecular weights (M,,) were evaluated from intrinsic viscosity measurements in decalin at 408 K and the a,, values decreased with increasing dose and temperature. G (scission) -G (crosslinking) values were calculated and it was found that the G, -G, values are higher at lower doses and higher dose rates. The thermal characteristics of the irradiated fibers were investigated by thermogravimetry (TG) analysis in air or argon and with differential scanning calorimetric (DSC) studies. The TG data indicated slightly less thermal stability for the modified fibers both in air as well as argon. The DSC data indicated very little change in the melting points of the samples, the melting points being around 444 f 2 K.

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NAA determiantion of iron and silicon in USGS standards and bauxites using fast neutrons from241Am-Be source

Batra

Lanjewar

Garg

1986

Journal of Radioanalytical and Nuclear Chemistry Letters

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Elemental characterisation through instrumental neutron activation

Cited by 10 publications

References 5 publications

Determination of Tantalum in Silicate Rocks by Neutron Activation Analysis and N-Benzoyl-N-Phenylhydroxylamine or Cupferron Extraction

Determination of Tantalum in Silicate Rocks by Neutron Activation Analysis and N-Benzoyl-N-Phenylhydroxylamine or Cupferron Extraction

Gamma irradiation of polypropylene fibers in the presence of carbon tetrachloride

NAA determiantion of iron and silicon in USGS standards and bauxites using fast neutrons from241Am-Be source

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