贵金属
貴金屬
귀금속
PRECIOUS METALS
2013年
2期
51-55,60
,共6页
唐志中%王君玉%孙红林%王梅英%李艳华%李杰%陈静
唐誌中%王君玉%孫紅林%王梅英%李豔華%李傑%陳靜
당지중%왕군옥%손홍림%왕매영%리염화%리걸%진정
分析化恘%锡试金%地质样品%电感耦合等离子体质谱法(ICP-MS)%测定金%铂%钯
分析化恘%錫試金%地質樣品%電感耦閤等離子體質譜法(ICP-MS)%測定金%鉑%鈀
분석화규%석시금%지질양품%전감우합등리자체질보법(ICP-MS)%측정금%박%파
analytical chemistry%tin fire assay%geological samples%inductively coupled plasma mass spectrometry (ICP-MS)%determination of Au,Pt and Pd
以锡作捕集剂,通过调整试金配料,将熔矿温度提高到1100℃,解决了锡试金熔炼困难、不易成扣和扣回收不稳定现象。通过增加助熔剂和覆盖剂,改进了熔渣流动性及样品溢出的问题。对捕集了贵金属的锡扣用盐酸溶解锡、镍等,过滤后王水溶解金、铂、钯沉淀物,并用电感耦合等离子体质谱法测定。对国家标准物质的分析结果与标准值相一致,各元素的RSD在5%~14%之间。对5个地质样品进行结果比对,采用锡试金法与铅试金法前处理测得的金、铂、钯结果相符。该方法在生产实践中已得到了应用,适用于地质样品中金、铂、钯的分析。
以錫作捕集劑,通過調整試金配料,將鎔礦溫度提高到1100℃,解決瞭錫試金鎔煉睏難、不易成釦和釦迴收不穩定現象。通過增加助鎔劑和覆蓋劑,改進瞭鎔渣流動性及樣品溢齣的問題。對捕集瞭貴金屬的錫釦用鹽痠溶解錫、鎳等,過濾後王水溶解金、鉑、鈀沉澱物,併用電感耦閤等離子體質譜法測定。對國傢標準物質的分析結果與標準值相一緻,各元素的RSD在5%~14%之間。對5箇地質樣品進行結果比對,採用錫試金法與鉛試金法前處理測得的金、鉑、鈀結果相符。該方法在生產實踐中已得到瞭應用,適用于地質樣品中金、鉑、鈀的分析。
이석작포집제,통과조정시금배료,장용광온도제고도1100℃,해결료석시금용련곤난、불역성구화구회수불은정현상。통과증가조용제화복개제,개진료용사류동성급양품일출적문제。대포집료귀금속적석구용염산용해석、얼등,과려후왕수용해금、박、파침정물,병용전감우합등리자체질보법측정。대국가표준물질적분석결과여표준치상일치,각원소적RSD재5%~14%지간。대5개지질양품진행결과비대,채용석시금법여연시금법전처리측득적금、박、파결과상부。해방법재생산실천중이득도료응용,괄용우지질양품중금、박、파적분석。
The difficulties of tin melting and the button recovery instability were solved by using the trapping agent of tin, adjusting the assay ingredient and increasing the molten ore temperature to 1100℃. Meanwhile, the slag fluidity and the overflow of the sample were improved by adding the flux and covering agent. Tin button with precious metal was dissolved and filtered, then the residue was dissolved with aqua regia and diluted with water. Au, Pt and Pd were determined by ICP-MS. The analysis results were consisted with standard values of the national standard reference materials, and the RSD value was 5%~14%. Au, Pt and Pd in geological samples were determined with tin fire assay method and lead fire assay method respectively, and their results are consistent. This method is suitable for the determination of Au, Pt and Pd in geological samples.