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

Main text:
Page 1, line 23: Replace "EC are from" by "EC is from".
Page 2, line 13: Replace "non-fossil sources for" by "non-fossil source for".
Page 2, line 14: Replace "other non-fossil sources" by "other sources" and replace "that exclusively" by "that is exclusively".
Page 2, line 24: "Stuiver and Polach, 1977" is missing in the Reference list.
Page 5, line 7: Replace "replicated analysis" by "replicated analyses".
Page 5, line 9: Replace "Organic makers" by "Organic markers".
Page 7, line 19: Replace "and is 0" by "and 0".
Page 8, line 4: Replace "is zero" by "are zero".
Page 8, line 28: Replace "reported values" by "reported".
Page 9, line 29: Replace "ratios" by "ratio" and replace "concentrations from" by "concentration from".
Page 9, line 30: Replace "were" by "was".
Page 10, line 22: Replace "falls into" by "fall into".
Page 10, line 24: Replace "has some" by "there are some".
Page 11, line 29: Replace "are reported in" by "was reported for" and replace "2013), Xiamen" by "2013) and Xiamen".
Page 12, lines 20 and 21: Replace "for example" by "for example,".
Page 13, line 18: Replace "overlaps with" by "overlap with".
Page 13, line 30: Replace "signatures for" by "signature for".
Page 13, line 31: Replace "burning are" by "burning is".
Page 14, line 18: Replace "compared the" by "compared to the".
Page 14, line 20: Replace "contributions of" by "contribution of".
Page 15, line 4: Replace "are much" by "is much".
Page 16, line 9: Replace "conentrations" by "concentrations".
Page 16, line 20: Replace "owning to" by "owing to".
Page 16, line 21: Replace "e.g. median" by "e.g., median" and replace "range, (1.9-4)" by "range, (1.9-4))".
Page 16, line 24: Replace "are consistently" by "is consistently" and replace "correlations" by "correlation".
Page 16, line 25: Replace "were observed" by "was observed".
Page 17, line 11: Replace "investigating, whether" by "investigating whether" and replace "for example" by "for example,".
Page 17, line 13: Replace "For examples" by "For example".
Page 17, line 14: Replace "is 2 times" by "are 2 times".
Page 17, line 18: Replace "than that total" by "than total".
Page 17, line 19: Replace "of0.85" by "of 0.85".
Page 17, line 20: Abbreviations and acronyms, here "VOCs", should be defined (written full-out) when first used. Since "VOC" is not used elsewhere in the text, I suggest replacing "semi-VOCs" by "semi-volatile organic compounds".
Page 18, line 18: Replace "contributions from" by "contribution from".
Page 18, line 20: Replace "Taken into account of the" by "Taking into account the".
Page 18, line 23: Abbreviations and acronyms, here "SD", should be defined (written full-out) when first used.
Page 18, lines 28 and 29: Replace "contributions" by "contribution".
Page 18, line 30: Replace "ranges for" by "range for" on two occasions.
Page 19, line 2: Replace "give a more" by "gives a more" and replace "Figure S14 and S15 shows" by "Figures S14 and S15 show".
Page 19, lines 16-19: The three sentences on enrichment factor (EF) are unclear. I presume that the EFs are crustal EFs, thus relative to some crustal composition, but what was this crustal composition and which crustal reference element was used to obtain the EFs? Both should be specified.
Page 20, line 4: Replace "Chinses cities" by "Chinese cities".
Page 21, line 6: Replace "by the KNAW" by "by a KNAW".
Page 23, line 26: Insert a space between the semicolon and "Limits".
Page 29, line 1: Replace "in China" by "in China.".
Page 30, line 5: Replace "is shown" by "are shown".
Page 34, line 3: Replace "was calculated" by "were calculated".
Page 34, line 7: Replace "signatures of" by "signature of" and replace "is not shown on" by "and is not shown on the".
Page 36, line 5: Replace "are shown" by "is shown".
Page 36, line 6: Replace "denotes different" by "denote different".
Page 36, lines 7-8: Replace "shown but not" by "indicated but are too small to be".

Supplement:
Page S2, line 1 below heading "S2 Measurement ...": Replace "Organic makers" by "Organic markers".
Page S2, line 2 above heading "S3 Determination ...": Abbreviations and acronyms, here "MDLs", should be defined (written full-out) when first used. Since "MDL" is not used elsewhere in the Supplement, I suggest replacing "The MDLs" by "The minimum detection limit".
Page S3, line 4: "De Rooi et al., 2010" is missing in the Reference list. Also, should it not be "De Rooij" instead of "De Rooi"?
Page S3, line 6: "Dusek et al., 2014" is missing in the Reference list.
Page S3, line 3 above heading "S4 Primary ...": Replace "is calculated" by "are calculated".
Page S3, line 1 above heading "S4 Primary ...": Replace "for sample" by "for a sample".
Page S4, line 4: Replace "burning subtype" by "burning subtypes".
Page S4, line 9: Replace "(2015)" by "(2015))".
Page S4, line 10: Replace "(2016)" by "(2016))".
Page S4, line 14: Replace "partially" by "which partially".
Page S4, lines 20-21: Replace "respectively overlaps most of data in literatures" by "respectively, overlap with most of the data in the literature".
Page S4, line 21: Replace "ratios for coal" by "ratio for coal".
Page S6, caption of Figure S2: Replace "air backward-in-time air" by "backward-in-time air".
Page S14, caption of Figure S10(b): It looks like there is something wrong with the indication of the green colours in the caption; within the Figure S3 and S4 are dark green and light green, respectively. Please, check also whether everything on this is correct in the Main text, especially for Figure 4.
Page S16, caption of Figure S12, line 6: Replace "denotes different" by "denote different".
Page S16, caption of Figure S12, last line: Replace "shown but not" by "indicated but are too small to be".
Pages S18 and S19, captions of Figures S14 and S15: "Wang et al., 2016" is missing in the Reference list.
Page S21, caption of Figure S17, line 3: Replace "represents" by "represent".
Page S22, line 1: Replace "studies" by "studies.".
Page S22, footnote of Table S1, line 1: Replace "signatures" by "signature".
Page S22, footnote of Table S1, line 2: Replace "are applied" by "is applied".
Page S23, footnote of Table S2: Replace "number in the parentheses is" by "numbers in parentheses are".
Page S24, footnotes of Table S3, line 1: Replace "uncertainties" by "uncertainty".
Page S29, line 1: Replace "The contribution" by "Contribution".
Page S30, line 1: Replace "The measured" by "Measured".
Page S30, footnotes of Table S9, line 2: Replace "ACS" by "the aerosol combustion system".
Page S30, footnotes of Table S9, last line: Replace "correct contamination" by "correct for contamination".
Page S33: The "Streets et al., 2003" reference is incomplete. There should be an article number and maybe also a doi number before the publication year.