Effects of organic matters coming from Chinese tea on soluble copper release from copper teapot.
The morphology and elemental composition of the corrosion products of copper teapot's inner-surface were characterized by the scanning electron microscopy and energy dispersive X-ray surface analysis (SEM/EDS), X-ray powder diffraction (XRD) and X-ray photon spectroscopy (XPS) analysis. It was revealed that Cu, Fe, Ca, P, Si and Al were the main elements of corrosion by-products, and the alpha-SiO(2), Cu(2)O and CaCO(3) as the main mineral components on the inner-surface of copper teapot. The effects of organic matters coming from Chinese tea on soluble copper release from copper teapots in tap water were also investigated. The results showed that the doses of organic matter (as TOC), temperate and stagnation time have significant effects on the concentration of soluble copper released from copper teapots in tap water.
Ni
Lixiao
L
State Key Laboratory of Hydrology, Water Resources and Hydraulic Engineering, College of Environmental Science and Engineering, Hohai University, Nanjing 210098, China.
Li
Shiyin
S
D003300:Copper / Q000032:analysis / Q000737:chemistry*; D003343:Corrosion; D005506:Food Contamination / Q000032:analysis*; D005618:Fresh Water / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D008855:Microscopy, Electron, Scanning; D012995:Solubility; D013662:Tea / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors
D013662:Tea; D003300:Copper