Spectroscopic study on the zinc-contaminated soils for the determination of zinc speciation.
The purpose of this paper reported the zinc species in the highly contaminated soils from metallurgical area around Erh-Jen River in the southern of Taiwan. FTIR and XPS were used to investigate the zinc species in the contaminated soils. Through a FTIR analysis, appreciable of zinc bound by organic matter was found and their bonding structure consisted of antisymmetric and symmetric stretchings, Zn-HSsym and Zn-HSasym. With XPS analysis, the Angstrom scale depth scan was surveyed for investigation the zinc speciation. No signal of zinc was detected in the depth of 900A for the larger particle contaminated soils whereas the detectable signal of zinc was determined in the XPS experiment. With further regression and fitting results, the major zinc species presented in the surface of larger and fine particle contaminated soils consisted of reductive and oxidative zinc species. In the deeper depth of contaminated soils, an inverse spinel zinc ferrite was found in the case of larger particle soil. No inverse spinel zinc ferrite was detected in the case of fine particle soil and could be attributed to the relatively small particle size.
Ko
Tzu-Hsing
TH
Department of Leisure and Recreation Management, Kao Fong College, 38 Hsin-Hsing Road, Chang Ji Hsiang, Pingtung 908, Taiwan. hsingko@mail.kfut.edu.tw
Shih
Meng-Hsiu
MH
Hsueh
Hsin-Ta
HT
D007220:Industrial Waste; D010316:Particle Size; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis*; D017550:Spectroscopy, Fourier Transform Infrared; D013624:Taiwan; D015032:Zinc / Q000032:analysis*; D017967:Zinc Compounds / Q000032:analysis*
D007220:Industrial Waste; D012987:Soil; D012989:Soil Pollutants; D017967:Zinc Compounds; D015032:Zinc