Determination of Cadmium, Copper, Lead and Zinc in Grains by Ultrasound-Assisted Extraction Followed by Atomic Absorption Spectrometry
GU Jia-li，ZHAO Gang，MA Zhan-ling
FOOD SCIENCE . 2013, (8): 168 -171 .  DOI: 10.7506/spkx1002-6630-201308035