On a possible bias in elemental carbon measurements with the Sunset thermal/optical carbon analyser caused by unstable laser signal
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- 作者：B.A.J. Ammerlaana ; b ; A.D. Jedynskaa ; aleksandra.jedynska@tno.nl" class="auth_mail" title="E-mail the corresponding author ; J.S. Henzinga ; R. Holzingerb
- 关键词：Elemental carbon ; Split point ; Thermal optical method ; Sunset ; Unstable laser transmission signal
- 刊名：Atmospheric Environment
- 出版年：2015
- 出版时间：December 2015
- 年：2015
- 卷：122
- 期：Complete
- 页码：571-576
- 全文大小：1057 K
文摘
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Unstable laser transmission signal in Sunset can lead to a bias in EC attribution.
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An instability of more than 10% around the split point leads to a substantial bias.
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An experiment checks the relevance of an instability during the cooling phase.
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Systematic monitoring of the laser transmission signal is strongly recommended.