Solid Phase Extraction Methodology for Robust Isotope Analysis of Atmospheric Ammonium [0.03%]
大气铵同位素分析的固相萃取方法学研究
Alexandra B MacFarland,Wendell W Walters,Meredith G Hastings
Alexandra B MacFarland
The stable nitrogen isotope composition (δ15N) of atmospheric ammonia (NH3) and ammonium (NH4+) has emerged as a potent tool for improving our understanding of the atmospheric burden of reduced nitrogen. However, current chemical oxidation...
Organic Ligand-Mediated Dissolution and Fractionation of Rare-Earth Elements (REEs) from Carbonate and Phosphate Minerals [0.03%]
有机配体介导的碳酸盐和磷酸盐矿物中稀土元素（REE）的溶解和分馏
Yinghao Wen,Pan Liu,Qian Wang et al.
Yinghao Wen et al.
Global efforts to build a net-zero economy and the irreplaceable roles of rare-earth elements (REEs) in low-carbon technologies urge the understanding of REE occurrence in natural deposits, discovery of alternative REE resources, and develo...
Anne H Davis,Bethany A Chidester,Eran Greenberg et al.
Anne H Davis et al.
Carbonates are important carbon-bearing phases in the mantle. While their role in upper mantle petrologic processes has been well studied, their effect on phase relations, melting, and transport properties in the lower mantle is less unders...
A Critical Look at Colloid Generation, Stability, and Transport in Redox-Dynamic Environments: Challenges and Perspectives [0.03%]
氧化复动态环境中胶体产生、稳定性及其运移的挑战和展望的一项批判性研究
Eleanor Spielman-Sun,Kristin Boye,Dipankar Dwivedi et al.
Eleanor Spielman-Sun et al.
Colloid generation, stability, and transport are important processes that can significantly influence the fate and transport of nutrients and contaminants in environmental systems. Here, we critically review the existing literature on collo...
Leaf-Level Bidirectional Exchange of Formaldehyde on Deciduous and Evergreen Tree Saplings [0.03%]
落叶树和常绿树幼苗叶片级别的甲醛双向交换
Joshua D Shutter,Joshua L Cox,Frank N Keutsch
Joshua D Shutter
Gas-phase formaldehyde (HCHO) is formed in high yield from the oxidation of many volatile organic compounds (VOCs) and is commonly used as a constraint when testing the performance of VOC oxidation mechanisms in models. However, prior to us...
Conor A Nixon
Conor A Nixon
In this review I summarize the current state of knowledge about the composition of Titan's atmosphere and our current understanding of the suggested chemistry that leads to that observed composition. I begin with our present knowledge of th...
Chemical Fingerprinting of Biomass Burning Organic Aerosols from Sugar Cane Combustion: Complementary Findings from Field and Laboratory Studies [0.03%]
甘蔗燃烧生物质的化学指纹：来自现场和实验室研究的互补发现
Elena Hartner,Nadine Gawlitta,Thomas Gröger et al.
Elena Hartner et al.
Agricultural fires are a major source of biomass-burning organic aerosols (BBOAs) with impacts on health, the environment, and climate. In this study, globally relevant BBOA emissions from the combustion of sugar cane in both field and labo...
Enhanced Strontium Removal through Microbially Induced Carbonate Precipitation by Indigenous Ureolytic Bacteria [0.03%]
土著尿素分解细菌通过微生物诱导的碳酸盐沉淀改善硫酸锶去除率
Matthew White-Pettigrew,Samuel Shaw,Lewis Hughes et al.
Matthew White-Pettigrew et al.
Microbial ureolysis offers the potential to remove metals including Sr2+ as carbonate minerals via the generation of alkalinity coupled to NH4+ and HCO3- production. Here, we investigated the potential for bacteria, indigenous to sediments ...
Favorable Environments for the Formation of Ferrocyanide, a Potentially Critical Reagent for Origins of Life [0.03%]
有利于形成亚铁氰化物的环境，可能对生命起源至关重要的一种试剂
Zoe R Todd,Nicholas F Wogan,David C Catling
Zoe R Todd
Cyanide and its derivatives play important roles in prebiotic chemistry through a variety of possible mechanisms. In particular, cyanide has been shown to allow for the synthesis of ribonucleotides and amino acids. Although dissolved hydrog...
Experimental and Numerical Study of Radioiodine Sorption and Transport in Hanford Sediments [0.03%]
汉福德沉积物中放射性碘的吸附和传输的实验和数值研究
Xiaoliang He,Mark L Rockhold,Yilin Fang et al.
Xiaoliang He et al.
Radioiodine (129I) poses a potential risk to human health and the environment at several U.S. Department of Energy sites, including the Hanford Site, located in southeastern Washington State. Experimental studies and numerical modeling were...