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Quantification of Mercury in Flue Gas Emission using Boron-doped Diamond Electrochemistry.

DE2004821152

Publication Date	2002
Personal Author	Manivannan, A.; Seehra, M. S.
Page Count	14
Abstract	In this project, we have attempted to develop a new technique utilizing Boron-doped diamond (BDD) films to electrochemically detect mercury dissolved in solution via the initial deposition of metallic mercury, followed by anodic linear sweep voltammetry in the range from 10-10(sup -10) M to 10(sup -5) M. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques were employed. The extremely low background current for BDD electrodes compared to glassy carbon (GC) provides a strong advantage in trace metal detection. CV peak currents showed good linearity in the micromolar range. A detection level of 6.8 x 10(sup -10) M was achieved with DPV in 0.1 M KNO(sub 3) (pH= 1) for a deposition time of 20 minutes. Reproducible stripping peaks were obtained, even for the low concentration range. A comparison with GC shows that BDD is superior. Linear behavior was also obtained in the mercury concentration range from 10(sup -10) M to 10(sup -9) M.
Keywords	Mercury Flue gases Gas emissions Electrochemistry Air pollution monitoring Detection
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	West Virginia Univ., Morgantown. Dept. of Physics.; Department of Energy, Washington, DC.; West Virginia Univ. Research Corp., Morgantown.
Supplemental Notes	Prepared in cooperation with West Virginia Univ. Research Corp., Morgantown. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200413

Quantification of Mercury in Flue Gas Emission using Boron-doped Diamond Electrochemistry.

Quantification of Mercury in Flue Gas Emission using Boron-doped Diamond Electrochemistry.
DE2004821152

Publication Date	2002
Personal Author	Manivannan, A.; Seehra, M. S.
Page Count	14
Abstract	In this project, we have attempted to develop a new technique utilizing Boron-doped diamond (BDD) films to electrochemically detect mercury dissolved in solution via the initial deposition of metallic mercury, followed by anodic linear sweep voltammetry in the range from 10-10(sup -10) M to 10(sup -5) M. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques were employed. The extremely low background current for BDD electrodes compared to glassy carbon (GC) provides a strong advantage in trace metal detection. CV peak currents showed good linearity in the micromolar range. A detection level of 6.8 x 10(sup -10) M was achieved with DPV in 0.1 M KNO(sub 3) (pH= 1) for a deposition time of 20 minutes. Reproducible stripping peaks were obtained, even for the low concentration range. A comparison with GC shows that BDD is superior. Linear behavior was also obtained in the mercury concentration range from 10(sup -10) M to 10(sup -9) M.
Keywords	Mercury Flue gases Gas emissions Electrochemistry Air pollution monitoring Detection
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	West Virginia Univ., Morgantown. Dept. of Physics.; Department of Energy, Washington, DC.; West Virginia Univ. Research Corp., Morgantown.
Supplemental Notes	Prepared in cooperation with West Virginia Univ. Research Corp., Morgantown. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200413