Abstract：
:The grazing trial at Kidston Gold Mine, North Queensland, was aimed specifically to assess the uptake of metals from the tailing and the potential for unacceptable contamination of saleable meat. Further aims included estimating metal dose rates and identifying potential exposure pathways including plant uptake of heavy metals, mine tailings adhered to plants and direct ingestion of mine tailing. It was found that of the 11 metals analysed (As, Zn, Co, Cd, Cr, Sn, Pb, Sb, Hg, Se and Ni) in the animal's liver, muscle and blood during the 8-month trial period, only accumulation of arsenic and zinc occurred. A risk assessment including these two metals was conducted to determine the potential for chronic metal toxicity and long-term contamination, using the estimates of metal dose rate. It was concluded that no toxicity or long-term contamination in cattle was likely at this site. Management procedures were therefore not required at this site; however, the results highlight percent ground cover and standing dry matter (DM) as important factors in decreasing metal exposure from direct ingestion of tailings and dust adhered to plants.
journal_name
Toxicol Lettjournal_title
Toxicology lettersauthors
Bruce SL,Noller BN,Grigg AH,Mullen BF,Mulligan DR,Ritchie PJ,Currey N,Ng JCdoi
10.1016/s0378-4274(02)00378-8keywords:
subject
Has Abstractpub_date
2003-01-31 00:00:00pages
23-34issue
1-2eissn
0378-4274issn
1879-3169pii
S0378427402003788journal_volume
137pub_type
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