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

For the Main text:
Line 16: Replace ", however" by "; however".
Line 18 and on 14 other occasions further within the text: "e.g. " by "e.g., ".
Lines 23-24: Replace "were found to be more dominant sources" by "was found to be a more dominant source".
Line 31: Replace "indicating their different" by "indicating different".
Line 33: Replace "pathways of" by "pathway of".
Line 43: There should be a space after the 4 ";" in this line.
Line 64: Replace ", instead" by "; instead".
Line 69: Replace "and its derivatives" by "and their derivatives".
Line 80: Replace "NACs is proposed" by "NACs are proposed".
Line 85: Replace "of NAC," by "of NACs,".
Line 109: It should be specified whether the aliquot was taken from the quartz fiber or the Teflon filter sample; I presume from the quartz fiber filter sample.
Line 148: Replace "were analyzed" by "were measured". Furthermore, it should be specified that the analyses for OC and EC were done on the quartz fiber filter samples.
Line 150: It should be specified which filter samples were used for the IC analyses. I presume the Tefon filter samples. If not, what analyses were done on the Teflon filter samples? This should be indicated.
Line 149: "Turpin and Lim, 2001" is missing in the Reference list.
Line 151: "Guo et al. (2010)" is missing in the Reference list.
Lines 158, 180 and 218: Replace "portitioning" by "partitioning".
Lines 161-162: Replace "concentrations of organic aerosols (OA), calculated to be OC multiplying by" by "concentration of organic aerosols (OA), calculated as OC multiplied by".
Line 166: Replace "saturated pressure" by "saturation pressure".
Line 169: Some information (e.g., appropriate literature references) should be given for the Nannoolal approach and for the Joback and Reid approach.
Line 172: Replace "would not" by "will not".
Line 175: "Cecinato et al. (2005)" is missing in the Reference list.
Lines 181 and 219: Replace "Le Breton et al. (2017)" by "Le Breton et al. (2018)".
Lines 200-201: "Edwards et al., 2017" is missing in the Reference list.
Line 229: Replace "at two sites" by "at the two sites".
Lines 246-247 and 249: It should be indicated what the "**" denote.
Line 247: Replace "than those with" by "than with".
Line 264: Replace "didn't show" by "did not show".
Line 280: Replace "unlikely important" by "likely not important".
Line 290: Replace "those during episodes" by "during episodes".
Line 292: Replace "than the nighttime" by "than the nighttime ones".
Line 298: Replace "The quantum" by "Quantum".
Line 301: Replace "according to the" by "according to".
Lines 303 and 305: Replace "et al (" by "et al. (".
Line 307: Insert a space before "(Yuan".
Line 309: Replace "play more" by "plays a more".
Line 310: Replace "of campaign" by "of the campaign".
Line 324: Replace "variation during" by "variations during".
Line 329: Should it not be "anymore" instead of "any more" here?
Line 338: Replace "higher anthropogenic" by "higher concentrations of anthropogenic".
Line 342: Replace "existed in polluted" by "exist in polluted".
Line 351: Replace "other, thus" by "other; thus".
Line 352: Replace "10ppb" by "10 ppb".
Line 358: Replace "represent the" by "represents the".
Line 359: Replace "the increasing of" by "increasing".
Line 368: Replace "values of toluene" by "value of toluene".
Line 369: Replace "than those during" by "than during".
Line 403: Replace "4-Nitrophenol" by "4-nitrophenol".
Line 407: Replace "more important sources" by "a more important source".
Line 414: Replace "atmospheres and that" by "atmospheres and indicates that".
Line 415: Replace "mechanisms however are still unclear, which deserve" by "mechanisms are, however, still unclear and deserve".
Line 418: Replace "4M5NC, daytime" by "4M5NC and daytime".
Line 425: Replace "than those during" by "than during".
Line 430: Replace "also important" by "also an important".
Lines 452-637, References:
- Titles of journal articles should be in lower case and not in Title Case.
- For articles with 2 authors, the ", and" before the second author should be replaced by " and".
Line 534: Replace "Atmos. Chem. Phys., 1-32, 10.5194/acp-2017-814, 2017" by "Atmos. Chem. Phys., 18, 10355-10371, 10.5194/acp-18-10355-2018, 2018".
Line 645: Replace "The summery" by "Summary" and replace "cross this" by "across this".
Line 659: Replace "The concentrations" by "Concentration".
Line 663: Replace "The variation of NAC compositions" by "Variation of NAC composition".
Line 666: Replace "The concentrations" by "Concentration".
Line 671: Replace "The correlation" by "Correlation".
Line 675: Replace "Figure 9 The" by "Figure 9" replace "ratios as" by "ratio as".

For the Supplement:
Page 2, line 1 of caption of Figure S2: Replace "The comparison" by "Comparison".
Page 2, lines 2 and 6 of caption of Figure S2: Replace "Melptitz" by "Melpitz".
Page 3, caption of Figure S3: Replace "The diurnal variations" by "Diurnal variation".
Page 4, within Figure S5: Replace "dattime" by "daytime".
Page 4, caption of Figure S6: Replace "The schematic diagram" by "Schematic diagram".
Page 5, heading of Table S1: Replace "The saturated" by "Saturation".
Page 6, heading of Table S2: Replace "The concentrations" by "Concentration".
Page 6, within Table S2: Replace "Melptitz" by "Melpitz".
Page 6, last line: Insert a space between "and" and "5-nitro-salicylic".
Page 7, heading of Table S3: Replace "The pearson" by "Pearson".
Page 7: There are data in bold, in red and in parentheses in red. It should be explained what this indicates.
Page 8, heading of Table S4: Replace "The pearson" by "Pearson".
Pages 8 and 9: There are data bold, in red and in parentheses in red. It should be explained what this indicates.

The following alterations are still needed for the Main text and Supplement before the manuscript can be published in ACP.

For the Main text:
Line 148: Replace "on quartz fiber samples using" by "on the quartz fiber filter samples using a".
Line 150: Replace "Teflon filter" by "The Teflon filter".
Line 249: Replace "than that with" by "than with".
Line 311: Replace "play a more" by "plays a more".
Line 660: Replace "Summery of" by "Summary of".

For the Supplement:
Page 7, last line: Replace " negtive values" by "negative values".

The following alteration is still needed in the Supplement before the manuscript can be published in ACP:
Page 9, last line: Replace " negtive values" by "negative values".

I apologize for the fact that I overlooked this error in the previous version of the Supplement.