1Akan J C, Abdulrahman F I, Sodipo O A, et al. Distri- bution of heavy metals in the liver, kidney and meat of beef, mutton, caprine and chicken from Kasuwan Sha- nu Market in Maiduguri Metropolis, Borno State, Ni- geria[J]. Research Journal of Applied Sciences, En- gineering and Technology, 2010,2(8) :743-748.
2Demirezen D, Uru~ K. Comparative study of trace ele- ments in certain fish, meat and meat products [J]. Meat Science, 2006,74(2) : 255-260.
3Khalafalla F A, Ali F H, Schwagele F, et al. Heavy metal residues in beef carcasses in Beni-Suef abattoir, Egypt I J]. Veterinaria Italiana, 2011, 47 (3): 351-361.
4Miranda M, L6pez-Alonso M, Castillo C, et al. Some toxic elements in liver, kidney and meat from calvesslaughtered in Asturias (Northern Spain)[J]. Euro pean Food Research and Technology, 2003,216 (4) 284-289.
5Jorhem L, Sundstr~Sm B, Engman J, et al. Levels of certain trace elements in bee{ and pork imported to Sweden}-J-1. Food Additives and Contaminants, 1996, 13(7) :737-745.
6Mariam I, Iqbal S, Nagra S A. Distribution of some trace and macrominerals in beef,mutton and poultry[J]. Inter- national Journal of Agriculture and Biology, 2004, 6(5) ..816-820.
7Korfali S I, Hawi T, Mroueh M. Evaluation of heavy metals content in dietary supplements in Lebanon[J]. Chemistry Central Journal, 2013,7 ( 1 ) .. 10-22.
8Avula B,Wang Y H,Duzgoren-Aydin N S, et al. Inor- ganic elemental compositions of commercial multivita- min/mineral dietary supplements:Application of colli- sion/reaction cell inductively coupled -- mass spec- troscopy[J]. Food Chemistry, 2011,127 ( 1 ) : 54-62.
