[Application of ICP-AES to the chemical speciation of heavy metals in flyash].
Chemical speciation of seven heavy metals of flyashes in incinerator was quantitatively tested using ICP-AES. Results showed that ICP-AES procedure could carry out quick, exact and high precision experiments. RSD ratio for most detected metals was lower than 3% while few metals present a comparatively high RSD when whose content was near the detection limits. The recovery ratio was 85.7%-100.63% flyashes were found to have high content of Zn, Pb. Cd, Cu, Mn, Pb and Zn existed mostly as carbonates and were leachable, while Cr and Ni were combined to metal oxides substrates and present immobilization characteristics.
Guo
Yu-Wen
YW
Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China.
Pu
Li-Mei
LM
Qiao
Wei
W
Wang
Wei
W
Wan
Xiao
X
Zhang
Xin-Rong
XR
D002104:Cadmium / Q000032:analysis / Q000737:chemistry; D002244:Carbon / Q000737:chemistry*; D002857:Chromium / Q000032:analysis / Q000737:chemistry; D060729:Coal Ash; D003300:Copper / Q000032:analysis / Q000737:chemistry; D017745:Incineration; D007854:Lead / Q000032:analysis / Q000737:chemistry; D008345:Manganese / Q000032:analysis / Q000737:chemistry; D019216:Metals, Heavy / Q000032:analysis* / Q000737:chemistry*; D009532:Nickel / Q000032:analysis / Q000737:chemistry; D052638:Particulate Matter / Q000737:chemistry*; D015203:Reproducibility of Results; D013054:Spectrophotometry, Atomic / Q000379:methods; D015032:Zinc / Q000032:analysis / Q000737:chemistry
D060729:Coal Ash; D019216:Metals, Heavy; D052638:Particulate Matter; D002104:Cadmium; D002857:Chromium; D007854:Lead; D008345:Manganese; D002244:Carbon; D003300:Copper; D009532:Nickel; D015032:Zinc