Smoke deposition to water surfaces drives hydrochemical changes
Smoke deposition to water surfaces drives hydrochemical changes
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烟雾沉积到水面驱动水化学变化
DOI：
10.1002/hyp.14626
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发表时间：
2022
影响因子：
3.2
通讯作者：
Brown, Michael G.
中科院分区：
文献类型：
--
作者：
Boyer, Elizabeth W.;Moritz, Max A.;Brown, Michael G.
这项研究提出了一个独特的数据集，从实验室实验中，我们探讨了暴露于烟雾的去离子水样品的化学成分的变化。在一个实验室的遮光罩内，放置到一个腔室的水样暴露于烟雾长达60分钟。随着时间的推移，随着烟雾暴露的增加，水化学观察到的变化的模式是相似的，在响应两个不同的烟雾处理产生燃烧的树木凋落物。为了估计烟雾剂量并评估重复烟雾处理的一致性，我们进行了额外的实验以评估透光率的变化。烟雾输入到去离子水样品驱动水化学的变化，增加酸度（pH值降低），有机物的含量（溶解有机碳和溶解有机氮的浓度增加），和无机氮的含量（铵，硝酸盐和亚硝酸盐的浓度增加）。该研究是在去离子水样品上进行的，结果可能无法直接转移到天然沃茨中。离子强度低、缓冲性差或酸中和能力低的溪流或湖泊沃茨可能与本研究的结果最为相似。相比之下，具有较高酸中和能力的缓冲良好的表面沃茨更有可能中和来自烟雾的酸性输入，而不会对水质产生显著影响。与本研究相关的公开数据集将有助于进一步考虑由流内输入（例如，从直接烟雾沉积到水面的水化学变化）与陆地输入（例如，水化学的变化源于被烧毁的流域景观的改变的流动路径和源区）。
This study presents a unique data set from a laboratory experiment where we explored changes in the chemical composition of deionized water samples exposed to smoke. Inside a laboratory hood, water samples placed into a chamber were exposed to smoke for up to 60 min. The pattern of variations in hydrochemistry observed over time with increasing smoke exposure was similar in response to two different smoke treatments generated from burning tree litter. To estimate the smoke dosage and assess the consistency of replicate smoke treatments, we conducted additional experiments to evaluate changes in light transmission. Smoke inputs to the deionized water samples drove changes in hydrochemistry, with increases in acidity (with decreasing pH values), the content of organic matter (with increasing concentrations of dissolved organic carbon and dissolved organic nitrogen), and the content of inorganic N species (with increasing concentrations of ammonium, nitrate, and nitrite). The study was conducted on deionized water samples, and the results may not be directly transferrable to natural waters. Stream or lake waters that are low in ionic strength, poorly buffered, or low in acid‐neutralizing capacity might respond the most similar to the results of this study. In contrast, well‐buffered surface waters having higher acid‐neutralizing capacity would be more likely to neutralize acidic inputs from the smoke without significant effects on water quality. The publicly available dataset associated with this study will contribute to further consideration of the relative importance of short‐term changes in hydrochemistry driven by in‐stream inputs (e.g., changes in water chemistry from direct smoke deposition to the water surface) in contrast to terrestrial inputs (e.g., changes in water chemistry stemming from altered flow paths and source areas of the burned watershed landscape).
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DOI：
--
发表时间：
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期刊：
影响因子：
--
作者：
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通讯作者：
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影响因子：
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作者：
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作者：
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影响因子：
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作者：
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DOI：
10.1098/rstb.2015.0172
发表时间：
2016
期刊：
Philosophical Transactions of the Royal Society B: Biological Sciences
影响因子：
--
作者：
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