摘要
论述了用强氧化剂熔融样品,氯磺酚偶氮硫代若丹宁(HSCT)-α-呋喃二肟分光光度法连续测定铬铁矿中的铂钯.在盐酸介质中,用三氯甲烷萃取α-呋喃二肟与钯的黄色络合物.于λmax=380 nm处测定其吸光值.水相中HSCT与铂反应生成2∶1稳定络合物,于λmax=540 nm处测定其吸光值,用该方法测定回收率为95%～105%,RSD分别为2.32%,1.98%,2.21%,1.72%,1.97%,0.48%.该方法用于铬铁矿中铂钯的检测准确度高,回收率好.
After fusing sample with Na2O2, a new method for spectrophotometric of determination of Platinum and Palladium of Chrome Iron Ore in catalyst with- furan - oxim and 5 - （ - 2 - hydrixy - 4 - sulfo - 5 - chlorphenol - azo） - thiorhodanineare is dealt with. In the medium of HCl, it applies CHCl3 extract and yellow complex compound palladium in hydrochloric acid, survey and determine absorbance in most wavelength, λmax = 380nm. In water phase,HSCT reacts with Platinum to form a stable 2 ： 1 complex, λmax = 540nm. Using this method, determing recovery is 95 % ～ 105 %, RSD are 2.32 %, 1.98 %, 2.21%, 1.72 %, 1.97 %, 0.48 %. This method has been applied to the determination of Platinum and Palladium in Chrome Iron, and good results are obtained.
出处
《兰州工业高等专科学校学报》
2005年第3期32-35,共4页
Journal of Lanzhou Higher Polytechnical College
关键词
HSCT-α-呋喃二肟
分光光度法
铬铁矿
铂钯测定
HSCT and α- furandioxim
spectrophotometry
Chrome Iron Ore
Platinum Palladium detection
