特罗波洛作为测定钒（V）的特定试剂。

Tropoloae as a specific reagent for the determination of vanadium(V).

作者信息

Rizvi G H, Singh R P

机构信息

Department of Chemistry University of Delhi Delhi-7, India.

出版信息

Talanta. 1972 Oct;19(10):1198-201. doi: 10.1016/0039-9140(72)80062-6.

DOI:10.1016/0039-9140(72)80062-6

PMID:18961172

Abstract

The blue colour developed on interaction of vanadium(V) with tropolone m 5.5-7.0N acid can be extracted into chloroform. The complex has an absorption maximum at 590 nm. Colour development is instantaneous and the extracted species is stable for 72 hr. Beer's law is followed in the range 1.02-14.25 ppm of vanadium. The molar absorptivity is 4.63 x 10(3)l.mole(-1).cm(-1). Most anions do not interfere. Of the 37 cations examined, only Ti(III), Ru(III), Pt(IV), Ir(IV), Mn(II), Ta(V) and Ce(III) were found to interfere. The interference due to these cations has been removed by masking them with EDTA.

摘要

钒（V）与托酚酮在5.5 - 7.0N酸中相互作用产生的蓝色可被萃取到氯仿中。该络合物在590nm处有最大吸收峰。显色瞬间完成，萃取后的物质在72小时内稳定。在钒含量为1.02 - 14.25ppm范围内符合比尔定律。摩尔吸光系数为4.63×10³l·mol⁻¹·cm⁻¹。大多数阴离子不产生干扰。在所检测的37种阳离子中，仅发现Ti(III)、Ru(III)、Pt(IV)、Ir(IV)、Mn(II)、Ta(V)和Ce(III)会产生干扰。通过用乙二胺四乙酸（EDTA）掩蔽这些阳离子，消除了它们的干扰。