N,N-diethyl-N?-benzoylthiourea -: A new spectrophotometric reagent for rhenium determination
[ X ]
Tarih
2001
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Soc Chimica Italiana
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The reagent N,N-diethyl-N'-benzoylthiourea produces a green complex with rhenium in hydrochloric acid medium in the presence of tin(II) chloride. The complex extracted into toluene shows an absorption maximum at 383 nm, obeys Beer's law from 1.5 to 22 mug ml(-1) of rhenium while its molar absorptivity and Sandell sensitivity are 6.66 x 10(3) L mol(-1) cm(-1) and 0.028 mug cm(-2), respectively. It tolerates the presence of a large number of ions, including Mo(VI), W (VI) and some platinum metals. Job's and the mote ratio methods indicate that the rhenium metal and the chelating agent ratio of 1:2 in solution. The system has been applied to the determination of rhenium on synthetic samples and alumina based catalysts.
Açıklama
Anahtar Kelimeler
[No Keyword]
Kaynak
Annali Di Chimica
WoS Q Değeri
Q4
Scopus Q Değeri
Cilt
91
Sayı
5-6
