Impact of mechanical disturbance and acidification on the metal(loid) and C, P, S mobility at the sediment water interface examined using a fractionation meso profiling ICP-QQQ-MS approach.
Impact of mechanical disturbance and acidification on the metal(loid) and C, P, S mobility at the sediment water interface examined using a fractionation meso profiling ICP-QQQ-MS approach.
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DOI：
10.1016/j.scitotenv.2018.09.390
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发表时间：
2019-02
期刊：
影响因子：
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通讯作者：
H. Schroeder;Anne-Lena Fabricius;D. Ecker;T. Ternes;L. Duester
中科院分区：
文献类型：
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作者：
H. Schroeder;Anne-Lena Fabricius;D. Ecker;T. Ternes;L. Duester
研究了机械扰动和氧诱导酸化对孔隙水中12种金属(类)S As、Cd、Co、Cr、Cu、Fe、Mn、Ni、Pb、Sb、Tl、V和多原子非金属C、P、S的浓度和粒度分馏的影响。使用剖面和采样系统(MISY)，从两个平行进行的培养实验中采集了12个孔隙水深度剖面，这两个实验都在实验室中受到机械干扰，随后暴露在不同的空气供应中。在低侵入性自动采样的同时，检测氧化还原电位、pH值和O2浓度。用电感耦合等离子体-三重四质谱同时定量分析了溶解(<；0.45 μm)和胶体(0.45-16 μm)两种不同粒度类别的所有分析物，结果表明：i)pH对金属的流动性有显著影响；ii)类金属的流动性受到机械扰动的强烈影响；iii)除了Fe、P和Ni外，胶体释放的重要性不大。
The impact of mechanical disturbance and oxygen induced acidification on the concentration and size fractionation of the 12 metal(loid)s As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Sb, Tl, V and the polyatomic nonmetals C, P and S in the pore water was studied. Using themesoprofiling and sampling system (messy) 12 pore water depth profiles were sampled from two incubation experiments undertaken in parallel, which were both mechanically disturbed in the lab and subsequently exposed to a different air supply. In parallel to the low invasive, automated sampling process the redox potential, the pH value and the O2concentration were detected. Simultaneous quantification of all analytes by inductively coupled plasma-triple quad-mass spectrometry in the two different size classes dissolved (<0.45 μm) and colloidal (0.45–16 μm) showed: i) the predominant influence of the pH on the mobility of metals; ii) the mobility of metalloids was strongly impacted by the mechanical disturbance; and iii) the colloidal release is less important except for Fe, P, and Ni.