Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1039/d0lc00251h |
| On-chip analysis of atmospheric ice-nucleating particles in continuous flow | |
| Tarn, Mark D.; Sikora, Sebastien N. F.; Porter, Grace C. E.; Wyld, Bethany, V; Alayof, Matan; Reicher, Naama; Harrison, Alexander D.; Rudich, Yinon; Shim, Jung-uk; Murray, Benjamin J. | |
| 通讯作者 | Tarn, MD ; Murray, BJ |
| 来源期刊 | LAB ON A CHIP
 |
| ISSN | 1473-0197 |
| EISSN | 1473-0189 |
| 出版年 | 2020 |
| 卷号 | 20期号:16页码:2889-2910 |
| 英文摘要 | Ice-nucleating particles (INPs) are of atmospheric importance because they catalyse the freezing of supercooled cloud droplets, strongly affecting the lifetime and radiative properties of clouds. There is a need to improve our knowledge of the global distribution of INPs, their seasonal cycles and long-term trends, but our capability to make these measurements is limited. Atmospheric INP concentrations are often determined using assays involving arrays of droplets on a cold stage, but such assays are frequently limited by the number of droplets that can be analysed per experiment, often involve manual processing (e.g.pipetting of droplets), and can be susceptible to contamination. Here, we present a microfluidic platform, the LOC-NIPI (Lab-on-a-Chip Nucleation by Immersed Particle Instrument), for the generation of water-in-oil droplets and their freezing in continuous flow as they pass over a cold plate for atmospheric INP analysis. LOC-NIPI allows the user to define the number of droplets analysed by simply running the platform for as long as required. The use of small (similar to 100 mu m diameter) droplets minimises the probability of contamination in any one droplet and therefore allows supercooling all the way down to homogeneous freezing (around -36 degrees C), while a temperature probe in a proxy channel provides an accurate measure of temperature without the need for temperature modelling. The platform was validated using samples of pollen extract and Snomax (R), with hundreds of droplets analysed per temperature step and thousands of droplets being measured per experiment. Homogeneous freezing of purified water was studied using >10 000 droplets with temperature increments of 0.1 degrees C. The results were reproducible, independent of flow rate in the ranges tested, and the data compared well to conventional instrumentation and literature data. The LOC-NIPI was further benchmarked in a field campaign in the Eastern Mediterranean against other well-characterised instrumentation. The continuous flow nature of the system provides a route, with future development, to the automated monitoring of atmospheric INP at field sites around the globe. |
| 类型 | Article |
| 语种 | 英语 |
| 开放获取类型 | Other Gold, Green Published |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000558065700002 |
| WOS关键词 | SAHARAN DUST ; MINERAL DUST ; DROPLET MICROFLUIDICS ; CHEMICAL-COMPOSITION ; FREEZING NUCLEATION ; DESERT AEROSOLS ; WATER ; NUCLEI ; PRECIPITATION ; TEMPERATURE |
| WOS类目 | Biochemical Research Methods ; Chemistry, Multidisciplinary ; Chemistry, Analytical ; Nanoscience & Nanotechnology ; Instruments & Instrumentation |
| WOS研究方向 | Biochemistry & Molecular Biology ; Chemistry ; Science & Technology - Other Topics ; Instruments & Instrumentation |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/325540 |
| 作者单位 | [Tarn, Mark D.; Sikora, Sebastien N. F.; Porter, Grace C. E.; Wyld, Bethany, V; Harrison, Alexander D.; Murray, Benjamin J.] Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England; [Tarn, Mark D.; Porter, Grace C. E.; Shim, Jung-uk] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England; [Alayof, Matan; Reicher, Naama; Rudich, Yinon] Weizmann Inst Sci, Dept Earth & Planetary Sci, IL-76100 Rehovot, Israel |
| 推荐引用方式 GB/T 7714 | Tarn, Mark D.,Sikora, Sebastien N. F.,Porter, Grace C. E.,et al. On-chip analysis of atmospheric ice-nucleating particles in continuous flow[J],2020,20(16):2889-2910. |
| APA | Tarn, Mark D..,Sikora, Sebastien N. F..,Porter, Grace C. E..,Wyld, Bethany, V.,Alayof, Matan.,...&Murray, Benjamin J..(2020).On-chip analysis of atmospheric ice-nucleating particles in continuous flow.LAB ON A CHIP,20(16),2889-2910. |
| MLA | Tarn, Mark D.,et al."On-chip analysis of atmospheric ice-nucleating particles in continuous flow".LAB ON A CHIP 20.16(2020):2889-2910. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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