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• W2099344992 abstract "Abstract. Measurement of NO2 at low concentrations (tens of ppts) is non-trivial. A variety of techniques exist, with the conversion of NO2 into NO followed by chemiluminescent detection of NO being prevalent. Historically this conversion has used a catalytic approach (molybdenum); however, this has been plagued with interferences. More recently, photolytic conversion based on UV-LED irradiation of a reaction cell has been used. Although this appears to be robust there have been a range of observations in low-NOx environments which have measured higher NO2 concentrations than might be expected from steady-state analysis of simultaneously measured NO, O3, jNO2, etc. A range of explanations exist in the literature, most of which focus on an unknown and unmeasured “compound X” that is able to convert NO to NO2 selectively. Here we explore in the laboratory the interference on the photolytic NO2 measurements from the thermal decomposition of peroxyacetyl nitrate (PAN) within the photolysis cell. We find that approximately 5 % of the PAN decomposes within the instrument, providing a potentially significant interference. We parameterize the decomposition in terms of the temperature of the light source, the ambient temperature, and a mixing timescale ( ∼ 0.4 s for our instrument) and expand the parametric analysis to other atmospheric compounds that decompose readily to NO2 (HO2NO2, N2O5, CH3O2NO2, IONO2, BrONO2, higher PANs). We apply these parameters to the output of a global atmospheric model (GEOS-Chem) to investigate the global impact of this interference on (1) the NO2 measurements and (2) the NO2 : NO ratio, i.e. the Leighton relationship. We find that there are significant interferences in cold regions with low NOx concentrations such as the Antarctic, the remote Southern Hemisphere, and the upper troposphere. Although this interference is likely instrument-specific, the thermal decomposition to NO2 within the instrument's photolysis cell could give an at least partial explanation for the anomalously high NO2 that has been reported in remote regions. The interference can be minimized by better instrument characterization, coupled to instrumental designs which reduce the heating within the cell, thus simplifying interpretation of data from remote locations." @default.
• W2099344992 created "2016-06-24" @default.
• W2099344992 creator A5030488043 @default.
• W2099344992 creator A5031212154 @default.
• W2099344992 creator A5057683118 @default.
• W2099344992 creator A5079181270 @default.
• W2099344992 creator A5082758115 @default.
• W2099344992 date "2016-04-15" @default.
• W2099344992 modified "2023-10-16" @default.
• W2099344992 title "Interferences in photolytic NO&lt;sub&gt;2&lt;/sub&gt; measurements: explanation for an apparent missing oxidant?" @default.
• W2099344992 cites W1592514828 @default.
• W2099344992 cites W1604308019 @default.
• W2099344992 cites W1961569888 @default.
• W2099344992 cites W1963575560 @default.
• W2099344992 cites W1968286188 @default.
• W2099344992 cites W1971643943 @default.
• W2099344992 cites W1973423110 @default.
• W2099344992 cites W1973493673 @default.
• W2099344992 cites W1973590325 @default.
• W2099344992 cites W1975208468 @default.
• W2099344992 cites W1976073073 @default.
• W2099344992 cites W1976887766 @default.
• W2099344992 cites W1978779625 @default.
• W2099344992 cites W1984993672 @default.
• W2099344992 cites W1985988953 @default.
• W2099344992 cites W1989576592 @default.
• W2099344992 cites W1992875886 @default.
• W2099344992 cites W1999061880 @default.
• W2099344992 cites W1999851537 @default.
• W2099344992 cites W2003705766 @default.
• W2099344992 cites W2007234699 @default.
• W2099344992 cites W2009454644 @default.
• W2099344992 cites W2009846251 @default.
• W2099344992 cites W2010630138 @default.
• W2099344992 cites W2011398730 @default.
• W2099344992 cites W2014766939 @default.
• W2099344992 cites W2018107708 @default.
• W2099344992 cites W2018664559 @default.
• W2099344992 cites W2020185837 @default.
• W2099344992 cites W2023695171 @default.
• W2099344992 cites W2026613384 @default.
• W2099344992 cites W2028005331 @default.
• W2099344992 cites W2028771278 @default.
• W2099344992 cites W2029289983 @default.
• W2099344992 cites W2031601832 @default.
• W2099344992 cites W2032551186 @default.
• W2099344992 cites W2033013225 @default.
• W2099344992 cites W2034189123 @default.
• W2099344992 cites W2036975202 @default.
• W2099344992 cites W2037476212 @default.
• W2099344992 cites W2039213325 @default.
• W2099344992 cites W2041499204 @default.
• W2099344992 cites W2050461779 @default.
• W2099344992 cites W2054264836 @default.
• W2099344992 cites W2054387407 @default.
• W2099344992 cites W2054387856 @default.
• W2099344992 cites W2057143178 @default.
• W2099344992 cites W2062268442 @default.
• W2099344992 cites W2069269698 @default.
• W2099344992 cites W2070165290 @default.
• W2099344992 cites W2073478420 @default.
• W2099344992 cites W2074946225 @default.
• W2099344992 cites W2083861833 @default.
• W2099344992 cites W2091429404 @default.
• W2099344992 cites W2095401435 @default.
• W2099344992 cites W2101744980 @default.
• W2099344992 cites W2102011942 @default.
• W2099344992 cites W2102468142 @default.
• W2099344992 cites W2107227078 @default.
• W2099344992 cites W2110089454 @default.
• W2099344992 cites W2112125700 @default.
• W2099344992 cites W2112878484 @default.
• W2099344992 cites W2113618082 @default.
• W2099344992 cites W2115035590 @default.
• W2099344992 cites W2115532816 @default.
• W2099344992 cites W2117744725 @default.
• W2099344992 cites W2118914202 @default.
• W2099344992 cites W2119398141 @default.
• W2099344992 cites W2122804368 @default.
• W2099344992 cites W2132921883 @default.
• W2099344992 cites W2134344429 @default.
• W2099344992 cites W2137535442 @default.
• W2099344992 cites W2138017294 @default.
• W2099344992 cites W2139126035 @default.
• W2099344992 cites W2148278106 @default.
• W2099344992 cites W2148553553 @default.
• W2099344992 cites W2152417813 @default.
• W2099344992 cites W2156598912 @default.
• W2099344992 cites W2159580411 @default.
• W2099344992 cites W2160776252 @default.
• W2099344992 cites W2161969443 @default.
• W2099344992 cites W2164567703 @default.
• W2099344992 cites W2168225205 @default.
• W2099344992 cites W2170340904 @default.
• W2099344992 cites W2178168198 @default.
• W2099344992 cites W2329169457 @default.
• W2099344992 cites W3033696992 @default.
• W2099344992 cites W347452380 @default.

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