Enrichment of platinum in ore was completed by adoption of active carbon and paper pulp in certain acidity. The content of platinum was determined by DDO spectrophotometry method.
采用在一定酸度下的活性炭，纸浆完成对矿石中的铂的富集，用DDO光度法测定铂的量。
2
The paper is devoted to the endogenous factors of chromite, platinum and sulfide ore deposit formation that accompanied specific petrogenetic processes with strong effects on ore concentration.
文章专门讨论与特定成岩作用伴生的铬、铂和硫化物矿床形成的内生因素。
3
The platinum palladium mine at somewhere in Yunnan province is so far China's revealed the largest independent platinum group metals ore deposit.