[Heavy metals in the surface sediment of the dumping ground outside Jiaozhou Bay and their potential ecological risk].

Based on the monitoring data of heavy metals (Cr, Hg, Cd, Pb, Zn, Cu) in the surface sediment of the dumping ground outside Jiaozhou Bay from 2003 to 2008, the distribution patterns, factors controlling the distribution, and the potential ecological risks of heavy metals were studied with the data in 2007-08, and the fluctuation trends of heavy metals in the surface sediment over the 6 years were also discussed. The average concentrations of heavy metals Cr, Hg, Cd, Pb, Zn, Cu in the surface sediment were 29.47, 0.

[Marine inorganic carbon system responses to macro-DIN supply coupled with Ulva pertusa in simulated experiments].

Effects of macronutrient (NO3(-) -N and NH4(+) -N) on inorganic carbon system of water with Ulva pertusa existed were studied in laboratory simulation experiments. The results demonstrated that nutrient enrichment induced DIC, HCO3- and p(CO2) decreased while pH and CO3(2-) increased. The seawater changed from carbon source to carbon sink.