The high Amount of Mg in Ni Catalyst is determined by atomic absorption apectrometry.The sample decompsed urith hydrochloric acid. nitric acid and perchlorate, is analyeed directly aqter adding La.

• 原子吸收法测定镍触媒中高含量镁时,样品用盐酸、硝酸、高氯酸分解,加入镧后即可测定。