Environmental & engineering geoscience最新文献

筛选
英文 中文
Adherence of polystyrene microspheres on cave sediment: implications for organic contaminants and microplastics in karst systems. 聚苯乙烯微球在洞穴沉积物上的附着:对岩溶系统中有机污染物和微塑料的影响。
Environmental & engineering geoscience Pub Date : 2023-08-01 Epub Date: 2023-09-20 DOI: 10.21663/eeg-d-22-00090
Jill L Riddell, Dorothy J Vesper, Louis M McDonald
{"title":"Adherence of polystyrene microspheres on cave sediment: implications for organic contaminants and microplastics in karst systems.","authors":"Jill L Riddell, Dorothy J Vesper, Louis M McDonald","doi":"10.21663/eeg-d-22-00090","DOIUrl":"10.21663/eeg-d-22-00090","url":null,"abstract":"<p><p>Interactions of karst aquifer sediments with organic contaminants or microplastics (MPs) have received relatively little attention even though the susceptibility of karst aquifers to contamination and their ability to store and transport sediment is well documented. Studies using polystyrene microspheres as surrogate tracers for bacteria transport in karst systems have generally observed low recovery of microspheres and attributed this to microsphere adsorption onto aquifer sediments. In addition to being used as surrogate tracer for bacteria, microspheres have the potential to be used as surrogate material for organic contaminants and MPs. Using cave sediments as a proxy for karst aquifer sediments, the adherence of two types of microspheres (carboxylated and nonfunctionalized) was measured in three different types of solutions: deionized water, a calcium carbonate solution, and a karst spring water. Both types of microspheres adhered to the sediments; the most influential factor in adherence was solution type not microsphere type. Average adherence ranged from 51%-94% with average adsorption coefficients (K<sub>D</sub>) ranging from 11.8-442. Average estimated organic-carbon water partition coefficients (K<sub>OC</sub>) and retardation factors (R<sub>F</sub>) ranged from 1.64×10<sup>3</sup> - 6.13×10<sup>4</sup> and 6.20×10<sup>1</sup> - 2.29 × 10<sup>3</sup>, respectively. K<sub>D</sub>, K<sub>OC</sub>, and R<sub>F</sub> were an order of magnitude higher in the karst water than in DI or CaCO<sub>3</sub> solution. The results illustrate the importance of sediment interactions with potential organic or MP contaminants in karst systems.</p>","PeriodicalId":519990,"journal":{"name":"Environmental & engineering geoscience","volume":"29 3","pages":"157-168"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11259235/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141736291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信