Zobrazeno 1 - 10
of 202
pro vyhledávání: '"K. SUVARDHAN"'
Publikováno v:
Journal of the Serbian Chemical Society, Vol 72, Iss 3, Pp 299-310 (2007)
A facile, sensitive and selective extractive spectrophotometricmethod was developed for the determination of copper(II) in various water and alloy samples using a newly synthesized reagent, 3-methoxy-4-hydroxy benzaldehyde 4-bromophenyl hydrazone (3,
Externí odkaz:
https://doaj.org/article/4f14ec9d220e4e4f950e38e1e0a77997
Publikováno v:
E-Journal of Chemistry, Vol 3, Iss 2, Pp 68-77 (2006)
A simple and sensitive spectrophotometric technique was developed for the determination of carbofuran in its formulations, water and grain samples. The method was based on the alkaline hydrolyzed product of carbofuran phenol interacted with diazonium
Externí odkaz:
https://doaj.org/article/ff43032bb01348f9bc4ac8663c895bea
Autor:
K. Suvardhan, S. Ramanaiah, K. Suresh Kumar, D. Rekha, Umayur Bhagan, G. R. K. Naidu, G. Krishnamurthy Naidu, B. S. Sastry, P. Chiranjeevi
Publikováno v:
E-Journal of Chemistry, Vol 2, Iss 1, Pp 6-14 (2005)
Facile and sensitive spectrophotometric methods for the determination of trace and ultra trace amounts of chromium (VI) are described. 4-aminoantipyrine (APP) reacts with 1-naphthol (NPL) in presence of oxidising agent potassium dichromate in acidic
Externí odkaz:
https://doaj.org/article/3966e55e31b54b3faf9139da77edcbec
Publikováno v:
E-Journal of Chemistry, Vol 2, Iss 3, Pp 187-192 (2005)
A new simple and selective spectrophotometric method is developed for the determination of malathion by using Gention violet is described. The method was based on the alkaline hydrolysis of malathion in presence of sodium ethoxide to form sodium dime
Externí odkaz:
https://doaj.org/article/807093539d8644d0bbb46e6b465f9a24
Publikováno v:
E-Journal of Chemistry, Vol 1, Iss 2, Pp 99-104 (2004)
A procedure is developed for the determination of Cd, Cu, Mo, Pb, Te and Ni in natural and spiked water by Atomic Absorption Spectroscopy (AAS) after preconcentration on a coniine dithiocarbamate supported by polyurethane. The sorbed elements are sub
Externí odkaz:
https://doaj.org/article/a39207a92f2e417d9789f5007256071b
Publikováno v:
E-Journal of Chemistry, Vol 1, Iss 5, Pp 267-271 (2004)
A rapid, selective and sensitive spectrophotometric method for the determination of mosarpide in either pure form or in its formulations in pharmaceutical preparations is described. The method is based on the diazotization coupling reaction of mosapr
Externí odkaz:
https://doaj.org/article/e6afcc5497f0464eae92617919cfc89d
Publikováno v:
Journal of Analytical Chemistry. 62:1032-1039
Three simple, rapid, and sensitive spectrophotometric methods for the determination of traces and ultratraces of tellurium(IV) were studied. These methods were based on either the oxidation of 4-bromophenylhydrazine (4-BPH) by tellurium in a basic me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9957e8d7fc6210c68b9e6657292e4a6d
https://doi.org/10.1134/s1061934807110068
https://doi.org/10.1134/s1061934807110068
Environmental Monitoring Section, Department of Chemistry, S. V. University, Tirupati-517 502, India E-mail : chiranjeevi_sai@yahoo.co.in Manuscript received 26 September 2003, revised 27 September 2004, accepted 19 May 2005 Simple and sensitive spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c2494b50a94c70b4c265fc4f03adffe
Autor:
K, Suvardhan, L, Krishnaiah, K, Suresh Kumar, D, Rekha, B, Jayaraj, S, Ramanaiah, P, Chiranjeevi
Publikováno v:
Chemosphere. 62(6)
A rapid, highly sensitive and selective spectrophotometric method for the determination of traces of selenium(IV) is described. The method is based on oxidation of p-nitroaniline by selenium(IV) followed by coupling reaction with N-(1-naphthalene-1-y
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::9fa88f62c309f66ce411866733739538
https://pubmed.ncbi.nlm.nih.gov/18584777
https://pubmed.ncbi.nlm.nih.gov/18584777