CAJ | 학술논문

利用钴与亚硝基R盐在pH 5.5～7的乙酸溶液中,生成红色可溶性络合物,进行光度测定.拟定了刚果(金)高铜、高镍、高锰样品中钴的测定方法.实验确定了样品的溶解方式、显色剂的浓度及用量、煮沸时间和放置时间,并对矿样中铁、铜、镍、锰等主要干扰元素进行了试验.分析结果经标准样品验证、方法比对,均符合分析规范要求.
이용고여아초기R염재pH 5.5～7적을산용액중,생성홍색가용성락합물,진행광도측정.의정료강과(금)고동、고얼、고맹양품중고적측정방법.실험학정료양품적용해방식、현색제적농도급용량、자비시간화방치시간,병대광양중철、동、얼、맹등주요간우원소진행료시험.분석결과경표준양품험증、방법비대,균부합분석규범요구.
The reaction that cobalt reacts with nitroso-R salt in pH 5.5 ～ 7 acetic acid solution and forms a red soluble complex was used in spectrophotometric determination of cobalt. The sample pretreatment and determination conditions, such as sample digestion method, chromogenic agent concentration and dosage, boiling time and storage time of the sample solution, etc were tested and optimized. The interference from elements of Fe, Cu, Ni and Mn on the determination of Co was also studied. The method has been applied to the determination of Co in Cu, Ni and Mn ores with satisfactory results.