The authors have appropriately addressed the comments of the two anonymous referees and they have modified their manuscript accordingly. However, several alterations and corrections are needed for the Main text and Supplement before the manuscript can be published in ACP.

For the Main text:
Line 45: Replace "by seasons" by "by season".
Line 66: Replace "by those" by "by the".
Lines 67 and 71: Replace "Li et" by "X. Li et".
Line 88: Replace "combustion was" by "combustion were".
Line 100: Replace "still very" by "is still very".
Line 107: Replace "on PMF" by "on the PMF".
Line 126: Replace "et al., 2020" by "et al. (2020)" and replace "was measured" by "was analyzed".
Lines 132, 134, 181-183, 360, 632 (within Figure 4), and 633 (within Figure 5): Several concentration data are given with too many significant figures; two significant figures normally suffice and three suffice when the first significant figure is "1"; thus, as examples, replace "52.6" by "53", "127.1" by "127", "56.3" by "56", "12.90" by "12.9", and "243.0" by "240".
Line 137: Replace "The UV-Vis" by "A UV-Vis".
Line 141: Replace "measured" by "the measured".
Line 145: Replace "in LWC" by "in the LWC".
Line 157: Replace "of NACs was resolved by PMF measured" by "of the NACs were resolved by the PMF".
Line 172: Replace "of different" by "of the different".
Line 175: Replace "with stating" by "with starting".
Line 179: Replace "of NACs" by "of the NACs".
Line 199: Replace "to its" by "to their".
Line 209: Replace "founded that the emission factors of 4-nitrocatechol was" by "found that the emission factors of 4-nitrocatechol were".
Line 210: Replace "than other NAC" by "than those of other NACs" and replace "concentration of" by "concentrations of".
Line 212: Replace "which is about 3-7 times higher than other NAC" by "and found that they are about 3-7 times higher than those of other NACs".
Line 218: Replace "than that in" by "than in".
Line 220: Replace "(Li et al., 2020), photochemical" by "(M. Li et al., 2020) and photochemical".
Line 223: Replace "among NACs" by "among the NACs".
Line 226: Replace "different" by "the different".
Lines 237-238: Replace "Li et al." by "M. Li et al.".
Line 238: Replace "correlations between" by "correlations of".
Line 241: Replace "which is mainly" by "which are mainly".
Line 245: Replace "of NACs" by "of the NACs".
Line 251: Replace "characterized with" by "characterized by".
Line 265: Replace "sources contributions" by "source contributions".
Line 285: Replace "of NACs" by "of the NACs".
Line 315: Replace "contributions were" by "contributions are".
Line 336: Replace "in four seasons" by "in all four seasons".
Line 347: Replace ", 4-nitrocatechol" by ", and 4-nitrocatechol".
Line 351: Replace "trends were" by "trends are".
Line 357: Replace "Conclusion" by "Conclusions".
Line 359: Replace "of NACs" by "of the NACs".
Line 368: Replace "had significantly" by "had a significant".
Line 380: Replace "BrC and more" by "BrC. More".
Line 429: Replace "Atmospheric Pollution Research," by "Atmos. Pollut. Res., 1,".
Line 510: Replace "Environmental Research" by "Environ. Res.".
Line 543: Replace "Total. Environ." by "Total Environ.".
Line 615: Replace "individual NAC" by "individual NACs".
Lines 625, 630, 634 and 638: Replace "these compounds are shown" by "the compounds are given".
Line 628: Replace "The average" by "Average".

For the Supplement:
Line 33: Replace "in bracket" by "in parentheses".
Line 37: Replace "sources contributions" by "source contributions" and within Table S6, replace twice "Sources contribution" by "Source contribution".
Line 47: Replace "NAC standard" by "NAC standards".