A new DGT technique comprising a hybrid sensor for the simultaneous high resolution 2-D imaging of sulfides, metallic cations, oxyanions and dissolved oxygen
文献类型：期刊论文
| 作者 | Ren, Mingyi; Ding, Shiming; Dai, Zhihui; Wang, Jingfu; Li, Cai; Zhong, Zhilin; Cao, Jingxin; Yang, Liyuan; Tsang, Daniel C. W.; Xu, Shiwei |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2021 |
| 卷号 | 403 |
| 英文摘要 | A new diffusive gradients in thin films technique (HR-ZCA DGT) was developed for simultaneous twodimensional (2-D) chemical imaging of sulfides, metallic cations and oxyanions (S, Cd, Co, Fe, Cu, Mn, Ni, Pb, Zn, As, Cr, Mo, Sb, Se, V, P and W) at the submillimeter scale, combined with laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) analysis. A novel binding gel was prepared using a double precipitation method with AgI and zirconium oxide (Zr-oxide) deposited sequentially on a preformed Chelex-100 resin gel. A good linear relationship was observed (R-2 0.99) between mass accumulation of the 17 assessed elements on the binding gel and the corresponding standardized laser ablation signals (signals of elements divided by signals of internal standard C-13), proving the feasibility of LA-ICP-MS analysis. Good analytical precision (RSD<12 %) was achieved for all 17 elements. A hybrid sensor comprising the novel DGT binding gel overlying an O-2 planar optrode was then tested in sediments to evaluate the dynamics of O-2 and multiple elements. Results showed that the mobility of As, P and W were controlled by precipitation/dissolution processes with Fe/Mn oxides. V, Co, Ni, Zn, Mo, Cd and Sb were released at the sediment surface with the oxidation of iron sulfides. |
| 源URL | [http://159.226.73.51/handle/332005/20634]  |
| 专题 | 中国科学院南京地理与湖泊研究所 |
| 推荐引用方式 GB/T 7714 | Ren, Mingyi,Ding, Shiming,Dai, Zhihui,et al. A new DGT technique comprising a hybrid sensor for the simultaneous high resolution 2-D imaging of sulfides, metallic cations, oxyanions and dissolved oxygen[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,403. |
| APA | Ren, Mingyi.,Ding, Shiming.,Dai, Zhihui.,Wang, Jingfu.,Li, Cai.,...&Wang, Yan.(2021).A new DGT technique comprising a hybrid sensor for the simultaneous high resolution 2-D imaging of sulfides, metallic cations, oxyanions and dissolved oxygen.JOURNAL OF HAZARDOUS MATERIALS,403. |
| MLA | Ren, Mingyi,et al."A new DGT technique comprising a hybrid sensor for the simultaneous high resolution 2-D imaging of sulfides, metallic cations, oxyanions and dissolved oxygen".JOURNAL OF HAZARDOUS MATERIALS 403(2021). |
入库方式： OAI收割
来源：南京地理与湖泊研究所
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