Furthermore, element that
was not detected in non-haze days, but has concentration of
0.15–0.17g/m3 in haze days, would be very much harmful to
human health. However, the variation of other trace metals including
Sr, Ti, Cr, and Cd was insignificant, mainly due to their low
relevance with human activities and/or cross-boundary transportation
Furthermore, element thatwas not detected in non-haze days, but has concentration of0.15–0.17g/m3 in haze days, would be very much harmful tohuman health. However, the variation of other trace metals includingSr, Ti, Cr, and Cd was insignificant, mainly due to their lowrelevance with human activities and/or cross-boundary transportation
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