Impact of Cu(II) and Zn(II) on the Reductive Dissolution of Pb(IV) Oxide
Impact of Cu(II) and Zn(II) on the Reductive Dissolution of Pb(IV) Oxide
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Cu(II) 和 Zn(II) 对 Pb(IV) 氧化物还原溶解的影响
DOI:
10.1021/acs.estlett.9b00612
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发表时间:
2019
影响因子:
10.9
通讯作者:
Giammar, Daniel
中科院分区:
文献类型:
--
作者:
Pan, Weiyi;Schattner, Lia;Guilak, Justin;Giammar, Daniel
Dissolved lead (Pb) concentrations in drinking water are mainly controlled by Pb-containing minerals in corrosion scales on lead service lines. Lead(IV) oxide (PbO2) solids can control lead concentrations at very low values, but they are stable only in the presence of a free chlorine residual. When free chlorine is depleted, PbO2undergoes reductive dissolution. Zinc (Zn) and copper (Cu) may accumulate on lead-containing corrosion scales through adsorption or precipitation processes in ways that affect the rate and extent of PbO2dissolution. The effects of Cu(II) and Zn(II) on the reductive dissolution of PbO2were explored in batch experiments with PbO2solids and aqueous Cu(II) and Zn(II). By investigating dissolved Pb(II) concentrations with different Cu(II) and Zn(II) loadings (0–4 μM) and under different pH conditions (5.5–9.5), we found a robust inhibitory effect of Cu(II) and Zn(II) on the reductive dissolution of PbO2. Zn(II) exhibited inhibition that was stronger than that of Cu(II). Characterization of the PbO2after reactions was consistent with adsorption of Cu(II) and Zn(II), leading to inhibition of PbO2dissolution. Under all conditions studied, α-PbO2dissolved faster than β-PbO2.
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影响因子:
3.9
作者:
Xiangmeng Ma;D. Lytle;W. Lee
通讯作者:
W. Lee
影响因子:
11.4
作者:
Kim, Eun Jung;Herrera, Jose E.
通讯作者:
Herrera, Jose E.
影响因子:
11.4
作者:
Yin Wang;Jiewei Wu;D. Giammar
通讯作者:
D. Giammar
影响因子:
11.4
作者:
Simoni Triantafyllidou;M. Schock;Michael K DeSantis;Colin P. White
通讯作者:
Colin P. White
DOI:
10.1002/j.1551-8833.2005.tb07523.x
发表时间:
2005-11
期刊:
Journal ‐ American Water Works Association
影响因子:
--
作者:
D. Lytle;M. Schock
通讯作者:
D. Lytle;M. Schock