Hang Thi Nguyen

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Concentrations of carbon monoxide (CO) and methane (CH(4)) in air were measured at both urban roadside (U-RS) and urban background (U-BG) stations in Seoul, Korea over an 11 yr period (1996-2006). The overall mean values of CO were 1.16+/-0.63 (U-RS) and 1.08+/-0.77 ppm (U-BG), while those of CH(4) were 2.24+/-0.42 (U-RS) and 2.06+/-0.31 ppm (U-BG). The(More)
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