- 金鑛石中의 金分析
- ㆍ 저자명
- 양재현,차기원,Yang. Jae Hyun,Cha. Kee Won
- ㆍ 간행물명
- 대한화학회지
- ㆍ 권/호정보
- 1967년|11권 1호|pp.8-11 (4 pages)
- ㆍ 발행정보
- 대한화학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
A method of determination of gold in ores has been established: Disolved ore solution is evaporated to dryness, redissolved with 0.1N HCl then chloroaurate formed is adsorbed on anion exchange resin, Dowex $1;{cdot};{ imes}4$. The resin is ignited and the residue is dissolved with HCl-$HNO_3$<TEX>. After evaporation of the acid, and then dilution with water, sodium azide is added. The gold is extracted with amyl alcohol from the solution buffered to pH 6. The gold is determined by measuring absorbancy of the alcohol layer spectrophotometricaly at <TEX>$385m{mu}$<TEX>. Various factors, HCl concentration, amount of the resin rate, if adsorption, foreign ions, effecting to the method, have been examined. This method seems to be satisfactory for the determination of gold presented dawn to 1g per metric ton in ore.