9K.--S. Wang, C.J. Sun. C.C. Yeh, The Thermotreatment of MSW Incinerator Fly Ash for Use as an Aggregate: a Study of the Characteristics of Size-- fractioning , Resources ,Conservation and Recycling , 2002, (35): 177-- 190
10Qi L, Jing H, Gregoire D C. Determination of trace elements in granites by inductively coupled plasma mass spectrometry [ J]. Talanta, 2000,51 (3) :507-513.