Colorimetric derivatization of ambient ammonia (NH<sub>3</sub>) for detection by long-path absorption photometry

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Abstract 3). We developed an online NH3 monitoring system – salicylic acid derivatization reaction and long-path absorption photometer (SAC-LOPAP) – based on a selective colorimetric reaction to form a highly absorbing reaction product and a LOPAP, which could run stably for a long time and be applied to the continuous online measurement of low concentrations of ambient NH3 by optimizing the reaction conditions, adding a constant-temperature module and liquid flow controller. The detection limit reached with this instrument was 40.5 parts per trillion (ppt) with a stripping liquid flow rate of 0.49 mL min- 1 - 1 R 2 3.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Colorimetric derivatization of ambient ammonia (NH3) for detection by long-path absorption photometry ; volume:16 ; number:22 ; year:2023 ; pages:5525-5535 ; extent:11
Atmospheric measurement techniques ; 16, Heft 22 (2023), 5525-5535 (gesamt 11)

Urheber
Tian, Shasha
Zu, Kexin
Dong, Huabin
Zeng, Limin
Lu, Keding
Chen, Qi

DOI
10.5194/amt-16-5525-2023
URN
urn:nbn:de:101:1-2023112303243470611604
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:23 MESZ

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Beteiligte

  • Tian, Shasha
  • Zu, Kexin
  • Dong, Huabin
  • Zeng, Limin
  • Lu, Keding
  • Chen, Qi

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