摘要
研究了显色剂Ｎ－烯内基－Ｎ＇－（对苯磺酸钠）硫脲与钌（Ⅲ）的显色反应。在４．５～６．０ｍｏｌ／Ｌ的ＨＣＩ溶液中，钌（Ⅲ）与Ｎ－烯丙基－Ｎ＇－（对苯磺酸钠）硫脲形成稳定的１：３蓝色水溶性络合物。最大吸收波长在６３０ｎｍ，表观摩尔吸光系数为２．３０±１０＾４．ｍｏｌ＾－１．ｃｍ＾－１；钌（Ⅲ）的浓度在０．４～３．２ｍｇ／Ｌ范围内内服从比尔定律。此法具有显色稳定，选择性好，操作简便等优点。
N-Allyl-N'-(sodium- p - benzenesulfonate ) thiourea (NaABSTU ) reacts with Ru(Ⅲ) to form astable soluble complex in 4. 5 ~ 6.0 mol/L HCl solution. The molar absorptivity of the complex is 2. 30×104L·mol-1·cm- 1 at 630 nm. The composition of Ru: NaNTU in the complex is 1: 3, Beer's law isobeyed in range of 0.4 ~ 3 .2 mg/L for Ru(Ⅲ), and the method has good selectivity. This method has beenapplied to the determination of ruthenium in secondary alloy and synthetic samples with satisfactory results.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
2000年第4期449-451,共3页
Chinese Journal of Analytical Chemistry
关键词
钌
显色反应
分光光度法
NaNtU
合金
N-Allyl-N′-(sodium-p-benzenesulfonate) thiourea, ruthenium(Ⅲ),colour reaction, spectro-photometry
