GYIG OpenIR  > 环境地球化学国家重点实验室
Phosphorous speciation and solubility in aeolian dust deposited in the interior American West
Zhuojun Zhang; Harland L. Goldstein; Richard L. Reynolds; Yongfeng Hu; Xiaoming Wang; Mengqiang Zhu
2018
发表期刊Environmental Science & Technology
卷号52期号:5页码:2658-2667
摘要

Aeolian dust is a significant source of phosphorus (P) to alpine oligotrophic lakes, but P speciation in dust and source sediments and its release kinetics to lake water remain unknown. Phosphorus K-edge XANES spectroscopy shows that calcium-bound P (Ca-P) is dominant in 10 of 12 dust samples (41-74%) deposited on snow in the central Rocky Mountains and all 42 source sediment samples (the fine fraction) (68-80%), with a lower proportion in dust probably because acidic snowmelt dissolves some Ca-P in dust before collection. Iron-bound P (Fe-P, similar to 54%) dominates in the remaining two dust samples. Chemical extractions (SEDEX) on these samples provide inaccurate results because of unselective extraction of targeted species and artifacts introduced by the extractions. Dust releases increasingly more P in synthetic lake water within 6-72 h thanks to dissolution of Ca-P, but dust release of P declines afterward due to back adsorption of P onto Fe oxides present in the dust. The back sorption is stronger for the dust with a lower degree of P saturation determined by oxalate extraction. This work suggests that P speciation, poorly crystalline minerals in the dust, and lake acidification all affect the availability and fate of dust-borne P in lakes.

收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/8716
专题环境地球化学国家重点实验室
作者单位1.Department of Ecosystem Science and Management, University of Wyoming, Laramie, Wyoming 82071, United States
2.Geosciences and Environmental Change Science Center, U.S. Geological Survey, Denver, Colorado 80225, United States
3.Canadian Light Source Incorporated, University of Saskatchewan, Saskatoon, Saskatchewan S7N 2V3, Canada
4.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
5.University of Chinese Academy of Sciences, Beijing 100049, China
推荐引用方式
GB/T 7714
Zhuojun Zhang,Harland L. Goldstein,Richard L. Reynolds,et al. Phosphorous speciation and solubility in aeolian dust deposited in the interior American West[J]. Environmental Science & Technology,2018,52(5):2658-2667.
APA Zhuojun Zhang,Harland L. Goldstein,Richard L. Reynolds,Yongfeng Hu,Xiaoming Wang,&Mengqiang Zhu.(2018).Phosphorous speciation and solubility in aeolian dust deposited in the interior American West.Environmental Science & Technology,52(5),2658-2667.
MLA Zhuojun Zhang,et al."Phosphorous speciation and solubility in aeolian dust deposited in the interior American West".Environmental Science & Technology 52.5(2018):2658-2667.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Phosphorous speciati(364KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Zhuojun Zhang]的文章
[Harland L. Goldstein]的文章
[Richard L. Reynolds]的文章
百度学术
百度学术中相似的文章
[Zhuojun Zhang]的文章
[Harland L. Goldstein]的文章
[Richard L. Reynolds]的文章
必应学术
必应学术中相似的文章
[Zhuojun Zhang]的文章
[Harland L. Goldstein]的文章
[Richard L. Reynolds]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Phosphorous speciation and solubility in aeolian dust deposited in the interior American West.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。