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The distribution and ecosystem risk of 16 polycyclic aromatic hydrocarbons (PAHs) in the Luan River, China, has been investigated. summation operatorPAHs levels ranged from 37.3 to 234 ng L(-1) in water, from 20.9 to 287 ng g(-1) in sediment and from 36.9 to 378 ng g(-1) in bank soil, respectively. A method based on toxic equivalency factors (TEFs) and risk(More)
Hyaluronan (HA) is a polysaccharide with high-potential medical applications, depending on the chain length and the chain length distribution. Special interest goes to homogeneous HA oligosaccharides, which can be enzymatically produced using Pasteurella multocida hyaluronan synthase (PmHAS). We have developed a sensitive, simple, and fast method, based on(More)
The variations and associations of abiotic and biotic variables in Baiyangdian Lake, China, were analyzed in situ. Abiotic variables included eleven water quality parameters, and were characterized by water quality index (WQI). Biotic variables included periphyton function and diversity metrics. WQI differed in different seasons at sampling sites and the(More)
Evaluating six main rivers and six lakes in Beihuan water system (BWS) and diagnosing the limiting factors of eco-health were conducted for the ecohealth assessment and ecological restoration division of urban water system (UWS) for Beijing. The results indicated that Jingmi River and Nanchang River were in a healthy state, the degree of membership to(More)
Natural biofilms were simultaneously grown on glass, plexi-glass, glass fiber and activated carbon fiber for 60 days in a shallow Lake in Haihe basin. Biofilm production and abundance of algae were influenced by the substratum. Magnitude of the substratum effect was glass < plexi-glass < glass fiber < activated carbon fiber. The bacteria communities in(More)
The structural and functional attributes of biofilms from Lake Baiyangdian, China, were tested to evaluate the utility of biofilms as indicators of macrophyte-dominated lake health. Biofilms on artificial substrata were sampled at 8 sites in the lake during different seasons. The responses of biofilms to land use and water quality changes were analyzed. The(More)
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