Successive Determination Of Ru,Au,Pd,Pt,Ir,Rh In Geological Samples By Oscillolarography Catalytic Wave After Separation And Enrichment By PAN-S Chelate Forming Resin

This issue depicted on how to dispose D290 macropore strong alkalianion exchange resin into the PAN-S chelate forming resin with PAN-Sfunction groups by use the liquor of 1-(2-pyridine azo)-2 naphthol-6sulphonate (PAN-S), studied on PAN-S chelate forming resin's adsorbcharacteristic to multi-noble metal such as ruthenium, aurum, palladium,platinum, iridium and rhodium, then do the simultaneity-continuum test ofruthenium, aurum, palladium, platinum, iridium and rhodium by useOscillolarography Catalytic Wave in the same solution.Our experiment studied on noble metal's filtration through ionexchanged pillar on its best acidity, height, velocity of flow and the dosageof detergent, then find out the best experiment condition, made the PAN-Schelate forming resin separating enrichment multi-noble metal come trueunder these best conditions. By the study, we could get that, when we use thehydrochloric acid which pH is 1.5, control the velocity of flow at0.30ml·min-1,the height of pillar is 20cm, and use 60ml thiourea-hydrochloticacid with 3%'s pH1.0, then we can get the best efficiency, and also made thestudy on standard reclaim experiment, the reclaim rate could get at 96～104%.This way is simple, quickly and cost lower, has feasibility and validity, andalso the forming resin which washed by the thiourea can keep away fromdestroy, could be used for many times, this give a satisfying result.Consulted others' study method, this issue also do thesimultaneity-continuum test of ruthenium, aurum, palladium, platinum,iridium and rhodium by using Oscillolarography Catalytic Wave by using thesame liquor. At first, test the ruthenium in 5ml liquor of 0.005 mol·L-1 HCl -0.02 mol·L-1 KCl, then add 5 ml 5 mol·L-1 NaOH liquor, test the aurum in 2.5mol·L-1 NaOH liquor, change the pH value test palladium, then add 3ml 0.75mol·L-1 H2SO4 – 1.25×10-3 mol·L-1 (CH2)6N4 – 1.2%NH4Cl – 0.003%N2H4?H2SO4 for test platinum and rhodium. This way is delicacy, all the six kinds ofnoble metal can reclaim with the reclaim rate at 94～106%, the definition ismore higher, comparatively standard deviation keep between at 1.2～4.12%,use T-test, there's no economy error. This way has practicality value, and alsocould widely used at the multi-noble metal determine in the research of water,biology, anti-cancer medicament, environment-sample, depose plate fluid,separate-enrichment means, and so on.