材料研究与应用
材料研究與應用
재료연구여응용
MATERIALS RESEARCH AND APPLICATION
2014年
4期
282-285
,共4页
火试金富集%吸金树脂%金%重量法
火試金富集%吸金樹脂%金%重量法
화시금부집%흡금수지%금%중량법
fire assay enrichment%absorption gold resin%gold%weight method
吸金树脂试样经配料、高温熔融后，通过熔铅捕集样品中的金，熔铅冷却后形成铅扣，试料中的其它物质与熔剂形成熔渣．利用铅扣与熔渣的比重差异将其分离，铅扣经高温灰吹后得到银合粒，以稀硝酸溶解银合粒分金，用重量法测定金量．本法测定结果与灼烧灰化－原子吸收光谱法测定结果一致，且操作简单，相对标准偏差小于0．2％，加标回收率大于98％．
吸金樹脂試樣經配料、高溫鎔融後，通過鎔鉛捕集樣品中的金，鎔鉛冷卻後形成鉛釦，試料中的其它物質與鎔劑形成鎔渣．利用鉛釦與鎔渣的比重差異將其分離，鉛釦經高溫灰吹後得到銀閤粒，以稀硝痠溶解銀閤粒分金，用重量法測定金量．本法測定結果與灼燒灰化－原子吸收光譜法測定結果一緻，且操作簡單，相對標準偏差小于0．2％，加標迴收率大于98％．
흡금수지시양경배료、고온용융후，통과용연포집양품중적금，용연냉각후형성연구，시료중적기타물질여용제형성용사．이용연구여용사적비중차이장기분리，연구경고온회취후득도은합립，이희초산용해은합립분금，용중량법측정금량．본법측정결과여작소회화－원자흡수광보법측정결과일치，차조작간단，상대표준편차소우0．2％，가표회수솔대우98％．
The gold was collected from molten lead trapped gold ,through batching and absorption gold res‐in melted by high temperature .After cooling ,lead button extracted from molten was produced ,the other substances and flux are kept in the form of ashes .The lead button trapped gold was separated after high temperature ash blowing differs with weight .These particles containing silver was dissolved into nitric acid and determined by weight method .The results show that burning ash and atomic absorption spec‐trometry test methods are very similar and simplified operation .Standard deviation below 0 .2% ,recovery is greater than 98% .
