Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2020.105419 |
Pragmatic protocols for working cleanly when measuring ice nucleating particles | |
Kevin R. Barry, Thomas C.J. Hill, Conrad Jentzsch, Bruce F. Moffett, ... Paul J. DeMott | |
2020-12-14 | |
发表期刊 | Atmospheric Research |
出版年 | 2020 |
英文摘要 | Measuring ice nucleating particles (INPs) is critical for understanding, and modeling, cloud formation, reflectivity, and precipitation patterns. However, because INPs are very rare in the atmosphere, but abundant—sometimes alarmingly so—in the dust that covers all work surfaces, contamination during processing of collected aerosol samples can be a significant hindrance to obtaining accurate measures of INPs. In preparing this technical note, we questioned the cleanliness of every collection and processing step involved in making immersion freezing measurements of INPs re-suspended from filter samples. The aim was to identify, and then minimize, all potential sources of significant contamination, including containers and tools used to store filters and prepare liquid suspensions, gloves, work surfaces, and the polymerase chain reaction (PCR) trays commonly used for sample analysis. While plasticware released few INPs, most gloves readily shed them, but this can be mitigated by using washed cleanroom vinyl or polyethylene gloves. Work surfaces, even those that had been cleaned, were prodigious reservoirs of contaminating INPs, but simply covering them with aluminum foil will provide an INP-free surface. By applying these practices, we developed a method to reduce the background level of INPs on Nuclepore™ polycarbonate filters in our tests to 0 at −25 °C and < 20 at −27 °C, making them suitable for use in all sampling environments. |
领域 | 地球科学 |
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/308989 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Kevin R. Barry, Thomas C.J. Hill, Conrad Jentzsch, Bruce F. Moffett, ... Paul J. DeMott. Pragmatic protocols for working cleanly when measuring ice nucleating particles[J]. Atmospheric Research,2020. |
APA | Kevin R. Barry, Thomas C.J. Hill, Conrad Jentzsch, Bruce F. Moffett, ... Paul J. DeMott.(2020).Pragmatic protocols for working cleanly when measuring ice nucleating particles.Atmospheric Research. |
MLA | Kevin R. Barry, Thomas C.J. Hill, Conrad Jentzsch, Bruce F. Moffett, ... Paul J. DeMott."Pragmatic protocols for working cleanly when measuring ice nucleating particles".Atmospheric Research (2020). |
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