【摘要】 <正> 前言硅和铝在润滑油中的存在反映机器部件的磨损程度和润滑油性能的变坏程度。以往测定所采用的样品予处理方法,须将油样灰化、熔融、消化、萃取分离等手续繁琐,时间冗长,在操作中又易损失。我们研究测定铝时的予处理方法,大大缩短灰化时间,降低熔样温度从而可用镍坩埚延长使用寿命。对硅将样品用溶剂稀释后直接测定,测定方法简便,快速。更多还原

【Abstract】 A modified pretreatment method for the determination of Al was proposed, and hence the ashing time was shortened from several hours to fifteen minutes. The fusion temperature was decreased from 550℃ down to 380℃, which avoids the loss of sample during fusion and permits to use Ni crueible. Si was determined directly after diluting the oil sample with MIBK. The RSD’s of Al and Si were 1.9 and 4.3%, and their recovery were 94—112% and 92—106 %, respectively.更多还原