Fig. 1: Species and functional group composition of PM2.5 in Wuhan, measured by HPLC-Orbitrap MS/MS. | npj Climate and Atmospheric Science

Fig. 1: Species and functional group composition of PM2.5 in Wuhan, measured by HPLC-Orbitrap MS/MS.

From: The significant contribution of biomass burning to methanol-soluble nitrogenous organics and its evolution during the highly-humid haze event in urban Wuhan

Fig. 1: Species and functional group composition of PM2.5 in Wuhan, measured by HPLC-Orbitrap MS/MS.The alternative text for this image may have been generated using AI.

a, d Mass defect plot of the detected compounds. The diameter of the point is proportional to the peak area. b, e Peak area fractions of different species and homologous sequences, represented by the inner and outer circle, respectively. c, f Functional group peak area for different categories. ONs + /ONs- represents the nitrogenous organics detected in the positive/negative electrospray ionization mode and the peak area mentioned above refers to the average peak area of all collected PM2.5 samples.

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