Measurements of atmospheric NO3 radicals in Hefei using LED-based long path differential optical absorption spectroscopy
Lu Xue1, 2, Qin Min1, †, , Xie Pin-Hua1, 3, ‡, , Duan Jun1, Fang Wu1, Ling Liu-Yi1, 4, Shen Lan-Lan1, Liu Jian-Guo1, 3, Liu Wen-Qing1, 3
       

(a) Fitting spectrum of NO3, (b) fitting residual spectrum, and (c) fitting vapor absorption spectrum.