Hygroscopic Properties of Plateau Surface Salts: Insights from Chemical Composition and Isotope Signatures
文献类型：期刊论文
| 作者 | Hao, Yuxin1; Qiu, Yuhe1; Li, Jun1,7; Liu, Wanyu1,6; Chen, Lanxiadi5; Zhang, Xiying4; Tang, Mingjin5 ; Niu, Zhenchuan3; Wang, Sen1; Kong, Xiangrui2
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| 刊名 | ACS EARTH AND SPACE CHEMISTRY
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| 出版日期 | 2024-04-27 |
| 卷号 | 8期号:5页码:1111-1121 |
| 关键词 | hygroscopicity salt evaporites geochemicalisotopes sulfur chlorine atmosphere |
| ISSN号 | 2472-3452 |
| DOI | 10.1021/acsearthspacechem.4c00028 |
| 英文摘要 | Evaporite salts from saline lakes and playas play active roles in the atmospheric cycles and the climate system, especially in the context of changing climate. This study investigates the chemical, isotopic, and hygroscopic characteristics of surface salt samples from two saline lakes, i.e., Mang'ai and Dalangtan (MA and DLT), in the Qaidam Basin. Samples from both lakes shared similar ionic compositions, with brines rich in Cl-, Mg2+, and Na+, and lakebed salts being primarily NaCl-based. Disparities in the composition between MA and DLT crust salts were observed. Isotopic analyses revealed consistent delta S-34 values within samples from a single site, hinting at a common origin. The sulfur source for the MA saline lake likely arises from nearby freshwater inflows and atmospheric deposits. The delta Cl-37 values varied by sample type, with solid samples typically exhibiting higher values than brines, attributed to Cl-37 depletion during precipitation. Ionic composition largely determines hygroscopic properties. While brines started moisture absorption around 40% relative humidity (RH), lakebed salts commenced at 70% RH. The DLT playa salt, enriched in Na2SO4, demonstrated a unique behavior, responding significantly only above 80% RH. The layered DLT samples showcased variable hygroscopic behaviors, particularly the early moisture uptake of the topmost layer, despite its ionic similarity to another layer, hinting at molecular or hydration disparities. In conclusion, this investigation unravels the multifaceted relationship between salt evaporites composition and their implications for atmospheric chemistry. |
| WOS研究方向 | Chemistry ; Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001226257000001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78567]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Wang, Sen; Kong, Xiangrui |
| 作者单位 | 1.Northwest Univ, Coll Urban & Environm Sci, Dept Environm Engn, Xian 710127, Peoples R China 2.Univ Gothenburg, Dept Chem & Mol Biol, Atmospher Sci, SE-41390 Gothenburg, Sweden 3.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China 4.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Key Lab Salt Lake Geol & Environm Qinghai Prov, Xining 810008, Peoples R China 5.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 6.Beijing Normal Univ, Interdisciplinary Res Ctr Earth Sci Frontier, Beijing 100875, Peoples R China 7.Xiamen Univ, Coll Ocean & Earth Sci, Xiamen 361102, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hao, Yuxin,Qiu, Yuhe,Li, Jun,et al. Hygroscopic Properties of Plateau Surface Salts: Insights from Chemical Composition and Isotope Signatures[J]. ACS EARTH AND SPACE CHEMISTRY,2024,8(5):1111-1121. |
| APA | Hao, Yuxin.,Qiu, Yuhe.,Li, Jun.,Liu, Wanyu.,Chen, Lanxiadi.,...&Kong, Xiangrui.(2024).Hygroscopic Properties of Plateau Surface Salts: Insights from Chemical Composition and Isotope Signatures.ACS EARTH AND SPACE CHEMISTRY,8(5),1111-1121. |
| MLA | Hao, Yuxin,et al."Hygroscopic Properties of Plateau Surface Salts: Insights from Chemical Composition and Isotope Signatures".ACS EARTH AND SPACE CHEMISTRY 8.5(2024):1111-1121. |
入库方式： OAI收割
来源：广州地球化学研究所
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