Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL089244 |
A Mechanistic Study of Carbonic Anhydrase Enhanced Calcite Dissolution | |
Sijia Dong; William M. Berelson; H. Henry Teng; Nick E. Rollins; Sahand Pirbadian; Mohamed Y. El‐; Naggar; Jess F. Adkins | |
2020-09-21 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | Carbonic anhydrase (CA) has been shown to promote calcite dissolution (Liu, 2001; Subhas et al., 2017), and understanding the catalytic mechanism will facilitate our understanding of the oceanic alkalinity cycle. We use atomic force microscopy (AFM) to directly observe calcite dissolution in CA‐bearing solution. CA is found to etch the calcite surface only when in extreme proximity (~ 1 nm) to the mineral. Subsequently, the CA induced etch pits create step edges that serve as active dissolution sites. The possible catalytic mechanism is through the adsorption of CA on the calcite surface, followed by proton transfer from the CA catalytic center to the calcite surface during CO2 hydration. This study shows that the accessibility of CA to particulate inorganic carbon (PIC) in the ocean is critical in properly estimating oceanic CaCO3 and alkalinity cycles. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/296391 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Sijia Dong,William M. Berelson,H. Henry Teng,et al. A Mechanistic Study of Carbonic Anhydrase Enhanced Calcite Dissolution[J]. Geophysical Research Letters,2020. |
APA | Sijia Dong.,William M. Berelson.,H. Henry Teng.,Nick E. Rollins.,Sahand Pirbadian.,...&Jess F. Adkins.(2020).A Mechanistic Study of Carbonic Anhydrase Enhanced Calcite Dissolution.Geophysical Research Letters. |
MLA | Sijia Dong,et al."A Mechanistic Study of Carbonic Anhydrase Enhanced Calcite Dissolution".Geophysical Research Letters (2020). |
条目包含的文件 | 条目无相关文件。 |
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