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Tea is a widely consumed beverage. However, recent studies revealed that there were an increasing number of cases of tea products exceeding the former maximum permissible concentration (MPC) in China for Pb (2mgkg −1 ). Tea Pb contamination is an issue affecting trade and consumer confidence. Root uptake of Pb could contribute significantly to Pb accumulation in tea leaves due to the strong...
Cold season (winter and thaw) CH 4 , CO 2 and N 2 O fluxes from freshwater marshes (47°35′N, 133°31′E, Northeast China) were measured, using the static chamber method. The mean CH 4 and CO 2 fluxes from Carex lasiocarpa (Cl) were 0.5±0.19 and 6.23±1.36mgCm −2 h −1 , respectively, and those from Deyeuxia angustifoli (Da) were 0.18±0.15 and 5.22±2...
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