CAJ | 학술논문

对碱熔-催化光度法测定碳酸盐岩中的Os、Ru进行了研究。结果表明，在过氧化钠熔融物料时，加入酸性熔剂硼砂和二氧化硅，可以增加熔融体的流动性，消耗过量的过氧化钠，避免了熔融物在后恋硫酸酸化时产生大量过氧化氢，使蒸馏氧化剂K2Cr2O7被还原而失去氧化性，有利于溶液中Os、Ru的完全氧化蒸馏分离。解决了催化光度法测定碳酸盐岩中Os、Ru测定结果偏低、不准确的问题。测定Os、Ru检出限(3σ)分别达到0.0192、0.0194 ng/g，精密度(RSD，n=12)分别为4.75%~15.2%、4.22%~13.9%，准确度(RE)分别为-3.12%~+3.33%、-8.45%~+4.54%。方法可满足地球化学调查样品分析质量要求。
대감용-최화광도법측정탄산염암중적Os、Ru진행료연구。결과표명，재과양화납용융물료시，가입산성용제붕사화이양화규，가이증가용융체적류동성，소모과량적과양화납，피면료용융물재후련류산산화시산생대량과양화경，사증류양화제K2Cr2O7피환원이실거양화성，유리우용액중Os、Ru적완전양화증류분리。해결료최화광도법측정탄산염암중Os、Ru측정결과편저、불준학적문제。측정Os、Ru검출한(3σ)분별체도0.0192、0.0194 ng/g，정밀도(RSD，n=12)분별위4.75%~15.2%、4.22%~13.9%，준학도(RE)분별위-3.12%~+3.33%、-8.45%~+4.54%。방법가만족지구화학조사양품분석질량요구。
The determination of osmium and ruthenium in carbonate rocks was investigated by the alkali fusion-catalytic spectrophotometry. The results showed that the addition of acidic rholite like borax and silicon dioxide when carbonate material was being melted by sodium peroxide could increase the mobility of the molten body, facilitate the consumption of an excessive amount of sodium peroxide and avoid large amounts of hydrogen peroxide produced by the melt after acidification with sulfuric acid. With the addition of acidic rholite, K2Cr2O7 was reduced and lost the oxidizing potency, so that osmium and ruthenium in the solution could be fully oxidized, distilled and separated. The detection limit (3σ) was 0.0192 ng/g for Os and 0.0194 ng/g for Ru. The precisionRSD (n=12) was 4.75%~15.2% for Os and 4.75%~13.9% for Ru. The accuracy (RE) was -3.12%~+3.33% for Os and -8.45%~+4.54% for Ru. The method can be applied to analysis of the samples from the geochemical survey.