Fig. 2: Fractional contributions of various bulk forms of N and PMF-resolved factors as a function of aerosol TN or ON loadings. | npj Clean Air

Fig. 2: Fractional contributions of various bulk forms of N and PMF-resolved factors as a function of aerosol TN or ON loadings.

From: Molecular and elemental markers-based source apportionment of organic nitrogen in PM2.5 at a suburban site in Hong Kong

Fig. 2

a Fractional contributions of NH4+-N, NO3−-N, and ON to bulk aerosol TN as a function of TN loadings; b Fractional contributions of the 14 ON source factors to bulk aerosol ON as a function of ON loadings. The probability density of aerosol TN or ON mass concentration is shown as the white line, which sums to 100% in each subpanel. Datapoints during the Chinese New Year (CNY) holiday period are excluded.

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