【求助】EN 601/602:1995/2004－应助

EN 602-2004 铝和铝合金.锻件.与食品接触的物品制造用半成品的化学成分
http://www.instrument.com.cn/show/download/shtml/045001.shtml

BS EN 601-2004 铝和铝合金.铸件.与食品接触用铸件的化学成分： http://www.instrument.com.cn/show/download/shtml/045138.shtml

The measure of aluminim content should be required in en601 in order to determine the residue element content. But, it is very difficult to measue as high as 90% Al in the sample. So, Any one can give suggestion??