Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1016/j.scitotenv.2022.157345 |
| Deciphering natural and anthropogenic nitrate and recharge sources in arid region groundwater | |
| Linhoff, Benjamin | |
| 通讯作者 | Linhoff, B |
| 来源期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| ISSN | 0048-9697 |
| EISSN | 1879-1026 |
| 出版年 | 2022 |
| 卷号 | 848 |
| 英文摘要 | Recently, the subsoils of ephemeral stream (arroyos) floodplains in the northern Chihuahuan Desert were discovered to contain large naturally occurring NO3- reservoirs (floodplain: similar to 38,000 kg NO3-N/ha; background: similar to 60 kg NO3-N/ha). These reservoirs may be mobilized through land use change or natural stream channel migration which makes differentiating between anthropogenic and natural groundwater NO3- sources challenging. In this study, the fate and sources of NO3- were investigated in an area with multiple NO3- sources such as accidental sewer line releases and sewage lagoons as well as natural reservoirs of subsoil NO3-. To differentiate sources, this study used a large suite of geocheinical tools including delta N-13[NO3], delta O-18[NO3], delta N-18[N-2], delta C-13[DIC], C-14, tritium ((II)-I-3), dissolved gas concentrations, major ion chemistry, and contaminants of emerging concern (CEC) including artificial sweeteners. NO3 at sites with the highest concentrations (25 to 229 mg/I. NO3-N) were determined to be largely sourced from naturally occurring subsoil NO3 based on delta N-15(NO3-) (<8 parts per thousand) and mass ratios of Cl-/Br- (<100) and NO3-/Cl- (>1.5). Anthropogenic NO3- was deciphered using mass ratios of Cl-/Br- (>120) and NO3-/Cl- (<1), delta N-18 [NO3) (>8 parts per thousand), and CEC detections. Nitrogen isotope analyses indicated that denitdflcation is fairly limited in the field area. CEC were detected at 67 % of sites including H-3 dead sites (<1 pCi/L) with low percent modern carbon-14 (PMC; <30 %). Local supply wells are H-3 dead with low PMC; as H-3 does not re-equilibrate and C-14 is very slow to re-equilibrate during recirculation through infrastructure, sites with low PMC, H-3 < 1 pCi/L, and CEC detections were interpreted as locations with substantial anthropogenic groundwater recharge. Neotame was used to identify locations of very recent (<15 years before present) or ongoing wastewater influxes to the aquifer. This work shows the important influence of naturally occurring subsoil NO3- reservoirs on groundwater in arid regions and the major contribution of artificial recharge. |
| 英文关键词 | Artificial sweeteners CEC Cl-/Br- Artificial recharge Nitrogen isotopes Vadose zone nitrate |
| 类型 | Article |
| 语种 | 英语 |
| 开放获取类型 | Bronze |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000891441600016 |
| WOS关键词 | PERSONAL CARE PRODUCTS ; DOMESTIC WASTE-WATER ; ARTIFICIAL SWEETENERS ; AQUATIC ENVIRONMENT ; AGRICULTURAL AREAS ; ORGANIC NITROGEN ; EMERGING CONCERN ; OXYGEN ; CONTAMINANTS ; DENITRIFICATION |
| WOS类目 | Environmental Sciences |
| WOS研究方向 | Environmental Sciences & Ecology |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/394400 |
| 推荐引用方式 GB/T 7714 | Linhoff, Benjamin. Deciphering natural and anthropogenic nitrate and recharge sources in arid region groundwater[J],2022,848. |
| APA | Linhoff, Benjamin.(2022).Deciphering natural and anthropogenic nitrate and recharge sources in arid region groundwater.SCIENCE OF THE TOTAL ENVIRONMENT,848. |
| MLA | Linhoff, Benjamin."Deciphering natural and anthropogenic nitrate and recharge sources in arid region groundwater".SCIENCE OF THE TOTAL ENVIRONMENT 848(2022). |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [Linhoff, Benjamin]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [Linhoff, Benjamin]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [Linhoff, Benjamin]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
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。
