@article{fdi:010069528, title = {{S}easonal and annual variations in atmospheric {H}g and {P}b {I}sotopes in {X}i'an, {C}hina}, author = {{X}u, {H}. {M}. and {S}onke, {J}. {E}. and {G}uinot, {B}. and {F}u, {X}. {W}. and {S}un, {R}. {Y}. and {L}anzanova, {A}ur{\'e}lie and {C}andaudap, {F}. and {S}hen, {Z}. {X}. and {C}ao, {J}. {J}.}, editor = {}, language = {{ENG}}, abstract = {{W}e present a 3-year time series of lead ({P}b) and mercury ({H}g) concentrations and isotope signatures in total suspended particulate ({TSP}) matter, and as total gaseous {H}g ({TGM}) in)(fan, {N}orthwestern {C}hina. {M}ean concentrations of {TSP} (299 +/- 120 mu g m(-3)), {P}b-{TSP} (0.33 +/- 0.15 mu g m(-3)) and: {H}g-{T}sp. (0.64 +/- 0.54 ng m(-3)), and {TGM} (5.7 +/- 2.7 ng m(-3)) were elevated. {W}e find that atmospheric {P}b levels in winter in {X}i'an have decreased by 4.6% per year since 2003, yet remain elevated relative to air quality guidelines and therefore a major health concern. delta {H}g-202({T}sp) and {D}elta {H}g-199({T}sp) averaged -0.80 +/- 0.30 parts per thousand (1 sigma) and -0.02 +/- 0.10 parts per thousand (1 sigma) and delta {H}g-202({TGM}) and {D}elta {H}g-199({TGM}) averaged -0.08 +/- 0.41 parts per thousand (10) and 0.00 +/- 0.04 parts per thousand (1 sigma). {R}elative to raw coal from {S}haanxi and surrounding provinces, delta {H}g-202({TSP}) is enriched in the light {H}g isotopes, whereas delta {H}g-202({TGM}) is enriched in the heavy isotopes. {TSP} and {TGM} {D}elta {H}g-199 signatures are indistinguishable from raw coal, indicating little photochemical mass independent fractionation of atmospheric {H}g in the near-field urban-industrial environment. delta {H}g-202({TGM}) correlates significantly with {TGM} levels (r(2) = 0.3, p < 0.01) and likely reflects binary mixing of local industrial {TGM} emissions with global background {TGM}.}, keywords = {{CHINE}}, booktitle = {}, journal = {{E}nvironmental {S}cience and {T}echnology}, volume = {51}, numero = {7}, pages = {3759--3766}, ISSN = {0013-936{X}}, year = {2017}, DOI = {10.1021/acs.est.6b06145}, URL = {https://www.documentation.ird.fr/hor/fdi:010069528}, }