绪言铂和铑同是铂族元素贵金属,由于它们具有耐酸、耐碱、耐高温等特点,所以在玻璃、纺织、高温测量仪表、化学工业及电子、原子能、航空、航天等尖端科学领域里都起了特种功用,并被各国列为极其重要的战略物资。铂和铑两元素,在地壳中克拉克值甚低,一般不独立自成矿床,往往是其它矿产中的副产品,所以产量不高,价格昂贵, INTRODUCTION Platinum and rhodium are platinum group noble metals. Due to their resistance to acids, alkalis and high temperatures, platinum and rhodium are widely used in the fields of cutting-edge science such as glass, textile, high-temperature measuring instruments, chemical industry, electronics, atomic energy, aviation and aerospace Played a special function, and by all countries as an extremely important strategic material. Platinum and rhodium two elements, the Clark value in the crust is very low, generally not independent from the mineralized bed, often a by-product of other minerals, so the yield is not high, expensive,