The in-flight sensitivity of gold-tube NO(y) converters to HCN

A. J. Weinheimer; T. L. Campos; B. A. Ridley

doi:10.1029/1998GL900066

The in-flight sensitivity of gold-tube NO(y) converters to HCN

A. J. Weinheimer, T. L. Campos, B. A. Ridley

Experimental Science Section

National Center for Atmospheric Research

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

In-flight measurements of the HCN conversion efficiency of three gold-tube NO(y) converters were made during the recent TOTE/VOTE and SUCCESS aircraft projects. While sampling ambient air and with the upstream addition of 500 ppmv H₂O, two converters had HCN conversion efficiencies averaging about 5%. The H₂O addition was a routine part of the NO(y) measurement procedure for these projects. A third converter showed much higher HCN conversion, about 30%. Conversion efficiencies determined while sampling synthetic air were significantly higher than those measured while sampling ambient air. The dependence of conversion efficiency on ambient H₂O and O₃ was minimal, at least with respect to the variability of the measured values over the course of the missions.

Original language	English
Pages (from-to)	3943-3946
Number of pages	4
Journal	Geophysical Research Letters
Volume	25
Issue number	21
DOIs	https://doi.org/10.1029/1998GL900066
State	Published - Nov 1 1998

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10.1029/1998GL900066

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title = "The in-flight sensitivity of gold-tube NO(y) converters to HCN",

abstract = "In-flight measurements of the HCN conversion efficiency of three gold-tube NO(y) converters were made during the recent TOTE/VOTE and SUCCESS aircraft projects. While sampling ambient air and with the upstream addition of 500 ppmv H2O, two converters had HCN conversion efficiencies averaging about 5\%. The H2O addition was a routine part of the NO(y) measurement procedure for these projects. A third converter showed much higher HCN conversion, about 30\%. Conversion efficiencies determined while sampling synthetic air were significantly higher than those measured while sampling ambient air. The dependence of conversion efficiency on ambient H2O and O3 was minimal, at least with respect to the variability of the measured values over the course of the missions.",

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AU - Campos, T. L.

AU - Ridley, B. A.

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Y1 - 1998/11/1

N2 - In-flight measurements of the HCN conversion efficiency of three gold-tube NO(y) converters were made during the recent TOTE/VOTE and SUCCESS aircraft projects. While sampling ambient air and with the upstream addition of 500 ppmv H2O, two converters had HCN conversion efficiencies averaging about 5%. The H2O addition was a routine part of the NO(y) measurement procedure for these projects. A third converter showed much higher HCN conversion, about 30%. Conversion efficiencies determined while sampling synthetic air were significantly higher than those measured while sampling ambient air. The dependence of conversion efficiency on ambient H2O and O3 was minimal, at least with respect to the variability of the measured values over the course of the missions.

AB - In-flight measurements of the HCN conversion efficiency of three gold-tube NO(y) converters were made during the recent TOTE/VOTE and SUCCESS aircraft projects. While sampling ambient air and with the upstream addition of 500 ppmv H2O, two converters had HCN conversion efficiencies averaging about 5%. The H2O addition was a routine part of the NO(y) measurement procedure for these projects. A third converter showed much higher HCN conversion, about 30%. Conversion efficiencies determined while sampling synthetic air were significantly higher than those measured while sampling ambient air. The dependence of conversion efficiency on ambient H2O and O3 was minimal, at least with respect to the variability of the measured values over the course of the missions.

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SP - 3943

EP - 3946

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 21

ER -

The in-flight sensitivity of gold-tube NO(y) converters to HCN

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