Knowledge Management System Of Guangzhou Institute of Geochemistry，CAS
Deng, Hongmei1,2,3; Liu, Meiling1,2; Liu, Zhaodong4; Su, Minhua1,2; Gao, Yue5; Yang, Danxing4; Liu, Yuxuan1,2; Ma, Liang1,2 ; Yu, Zhiqiang3; Xiao, Tangfu1,2; Luo, Jun4
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| Development and evaluation of diffusive gradients in thin-films technique with a novel titanium peroxide binding gel for in situ measurement of Tl in natural waters and sediments | |
| Source Publication | JOURNAL OF HAZARDOUS MATERIALS
 |
| ISSN | 0304-3894 |
| 2023-09-15 | |
| Volume | 458Pages:10 |
| DOI | 10.1016/j.jhazmat.2023.131976 |
| Language | 英语 |
| WOS Research Area | Engineering ; Environmental Sciences & Ecology |
| Abstract | Speciation of thallium (Tl) controls its fate and biogeochemical behaviors. Thus, a sensitive and accurately approach for Tl monitoring is of great demand due to its ultra-low concentration and sensitivity to redox change. In this study, diffusive gradients in thin-films technique (DGT) assembled with novel titanium peroxide (TP) binding gels (TP-DGT) was developed for in situ measurement of dissolved Tl(I) and Tl(III) in waters and sediments. Laboratory test showed a linear mass accumulation of Tl(I) and Tl(III) on the TP binding gels with the deployment time from 4 to 72 h. A fascinating performance of this novel DGT was achieved in a pH range of 4-9, ionic strength range of 0.1-200 mmol L-1, and humic acid concentration of 0-30 mg L-1 with a low detection limit of 0.3 ng L-1 for Tl(I) and 0.6 ng L-1 for Tl(III). The TP binding gels own excellent stability (1-365 d) and high capacity (73.5 & mu;g Tl disc-1) which are suitable for long-term monitoring. Field application in a river indicated that TP-DGT could work effectively, comparable to the grab sampling in waters. For the first time, the TP-DGT coupled with oxygen optode was successfully applied to map 2D distribution patterns of Tl and oxygen simultaneously in the rhizosphere of M. verticillatum L. This study confirms TP-DGT is a promising tool for routine monitoring of Tl in waters and for investigating biogeochemical processes of Tl in sediments. |
| Keyword | Thallium Diffusive gradients in thin-films (DGT) Titanium peroxide (TP) M verticillatum L |
| WOS ID | WOS:001036298000001 |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.gig.ac.cn/handle/344008/74548 |
| Collection | 有机地球化学国家重点实验室 |
| Corresponding Author | Luo, Jun |
| Affiliation | 1.Guangzhou Univ, Sch Environm Sci & Engn, Guangzhou 510006, Peoples R China 2.Guangzhou Univ, Key Lab Water Qual & Conservat Pearl River Delta, Minist Educ, Guangzhou 510006, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 4.Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Peoples R China 5.Vrije Univ Brussel VUB, Res Unit Analyt Environm & Geochem AMGC, Pl Laan 2, B-1050 Brussels, Belgium |
| Recommended Citation GB/T 7714 | Deng, Hongmei,Liu, Meiling,Liu, Zhaodong,et al. Development and evaluation of diffusive gradients in thin-films technique with a novel titanium peroxide binding gel for in situ measurement of Tl in natural waters and sediments[J]. JOURNAL OF HAZARDOUS MATERIALS,2023,458:10. |
| APA | Deng, Hongmei.,Liu, Meiling.,Liu, Zhaodong.,Su, Minhua.,Gao, Yue.,...&Luo, Jun.(2023).Development and evaluation of diffusive gradients in thin-films technique with a novel titanium peroxide binding gel for in situ measurement of Tl in natural waters and sediments.JOURNAL OF HAZARDOUS MATERIALS,458,10. |
| MLA | Deng, Hongmei,et al."Development and evaluation of diffusive gradients in thin-films technique with a novel titanium peroxide binding gel for in situ measurement of Tl in natural waters and sediments".JOURNAL OF HAZARDOUS MATERIALS 458(2023):10. |
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