Zobrazeno 1 - 10
of 60
pro vyhledávání: '"S. M. Khopkar"'
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 241:179-182
Thorium(IV) was quantitatively extracted at pH 7.5 with 0.0001M of hexaacetato calix(6)arene in toluene and after stripping with 0.05M nitric acid, it was determined spectrophotometrically at 545 nm with thoron. Thorium(IV) was separated from commonl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c41d09687fe684e6df19358f23573386
https://doi.org/10.1007/bf02347307
https://doi.org/10.1007/bf02347307
Autor:
Viji Jacob Mathew, S. M. Khopkar
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Letters. 201:281-292
Uranium(VI), (5 μg) was quantitatively extracted at pH 6.0 with 0.01M cryptan-222 in chloroform in the presence of 0.05MM Eosin as the counter ion. The metal from the organic phase was stripped with 0.0M perchloric acid. Uranium(VI) from the aqueous
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5da7cceeeceaacf5b8496ae4ff4b77ea
https://doi.org/10.1007/bf02164047
https://doi.org/10.1007/bf02164047
Publikováno v:
Talanta. 40:1535-1539
Cobalt(II) was quantitatively extracted at pH 8.0 with 5 x 10(-3)M Cyanex 272 [Bis(2,4,4 trimethyl pentyl) phosphoric acid] in chloroform. Cobalt(II) was stripped with 0.5M nitric acid and was determined by atomic absorption spectrometry as well as b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcbf2d0f226962127f8b33d718fbb8a6
https://doi.org/10.1016/0039-9140(93)80365-x
https://doi.org/10.1016/0039-9140(93)80365-x
Autor:
S. M. Khopkar, Yi Yu Vin
Publikováno v:
IndraStra Global.
A novel method is developed for the reversed-phase extractive chromatographic separation of niobium and tantalum with bis(2-ethylhexyl)phosphoric acid. Niobium is extracted from 1-10M hydrochloric acid and can be stripped with 3M sulphuric acid conta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::147379735bdba1ae656ea963a5c95782
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6958
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6958
Autor:
S. M. Khopkar, R. G. Vibhute
Publikováno v:
IndraStra Global.
Cesium (25-mu-g) was extracted with 0.03M DB-24-crown-8 at pH 3.0 from 0.01M picric acid in the presence of 2 ml methanol. It was stripped with 3M perchloric acid and was determined by atomic absorption spectrophotometry. The nature of the extracted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2052f93cf66c0b1b49d8f23229171aca
http://dspace.library.iitb.ac.in/xmlui/handle/10054/3617
http://dspace.library.iitb.ac.in/xmlui/handle/10054/3617
Autor:
S. M. Khopkar, N.V. Deorkar
Publikováno v:
IndraStra Global.
Zirconium was quantitatively extracted with 2.5 × 10 −2 M dicyclohexyl-18-crown-6 in dichloromethane from 8.5 M hydrochloric acid. It was stripped with 0.5 M hydrochloric acid and was determined spectrophotometrically as its complex with Arsenazo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a2d4fffa1d1dd69980f9ff502b48ab1
https://igi.indrastra.com/items/show/58129
https://igi.indrastra.com/items/show/58129
Autor:
S. M. Khopkar, M. A. Karve
Publikováno v:
IndraStra Global.
Scandium was quantitatively extracted with 0.1 mol dm-3 Aliquat 336S in xylene at pH = 6.0 from 0.01 mol dm-3 ascorbic acid. It was stripped with 1 mol dm-3 hydrochloric acid and determined as its complex with Arsenazo III. It was separated from bina
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5b3f4de842517d2f042a12b24188df8
http://dspace.library.iitb.ac.in/xmlui/handle/10054/5420
http://dspace.library.iitb.ac.in/xmlui/handle/10054/5420
Autor:
C. P. Vibhute, S. M. Khopkar
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 344:555-556
Molybdenum was separated from accompanying elements by extraction with Aliquat 336S in ascorbate medium. The determination was performed spectrophotometrically with Tiron. The standard deviation was found to be ±0.5%.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae7763cf69a8bcf0dc74dfbc6b06b1f3
https://doi.org/10.1007/bf00324653
https://doi.org/10.1007/bf00324653
Autor:
N. V. Deorkar, S. M. Khopkar
Publikováno v:
The Analyst. 116:961
Niobium was quantitatively extracted from 7-10 mol dm-3 hydrochloric acid with 2.0 x 10(-2) mol dm-3 dicyclohexyl-18-crown-6 in dichloromethane. The metal was stripped from the organic phase with 0.1 mol dm-3 sulphuric acid and determined spectrophot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12e255626f5973a085ae2db1cc015a3d
https://doi.org/10.1039/an9911600961
https://doi.org/10.1039/an9911600961
Autor:
N. V. Deorkar, S. M. Khopkar
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 130:433-441
Uranium(VI) was quantitatively extracted from 6 to 8M hydrochloric acid with 0.02M DC-18-crown-6 in chloroform. It was stripped from the organic phase with 0.5M hydrochloric acid and determined as its Arsenazo-III complex at 665 nm. Uranium(VI) was s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::880d5d0ae87df060d2dc46611f2666e6
https://doi.org/10.1007/bf02041362
https://doi.org/10.1007/bf02041362