Tropospheric aqueous-phase chemistry: kinetics, mechanisms, and its coupling to a changing gas phase.

Heavy metals in surface sediments of the Jialu River, China: their relations to environmental factors.

Degradation of norfloxacin by CoFe2O4-GO composite coupled with peroxymonosulfate: a comparative study and mechanistic consideration.

CoFe2O4 magnetic nanoparticles as a highly active heterogeneous catalyst of oxone for the degradation of diclofenac in water

Heterogeneous activation of peroxymonosulfate by LaFeO3 for diclofenac degradation: DFT-assisted mechanistic study and degradation pathways

Degradation of diclofenac by advanced oxidation and reduction processes: kinetic studies, degradation pathways and toxicity assessments.

In order to illuminate nutrient spatial distribution characteristics in surface sediment of Lake Hongze, sediment samples at 10 representative sampling stations were collected in June of 2008, and concentrations of organic matter, total nitrogen, organic nitrogen, ammonia nitrogen, nitrate, total phosphorus, inorganic phosphorus, Al-Phosphorus, and calcium-Phosphorus in sediment of each station were measured Analyze showed that: organic matter and total nitrogen are significantly correlated, and organic nitrogen occupies 90% of total nitrogen, which means that carbon and nitrogen were from the same source; Inorganic phosphorus is the majority (70%) of total phosphorus, and the calcium-Phosphorus accounts for a large percentage of inorganic phosphorus; The spatial distribution pattern of organic matter in the lake is very similar with that of total nitrogen, organic nitrogen and total phosphorus, which belongs to a typical sediment distribution pattern called Turbidity Flood Model The C/N analysis showed that the main sources of organic matter in surface sediments are from the sedimentation of biomass in its water column By organic matter index evaluation standards and organic nitrogen evaluation standards, the pollution levels of sediment at each sampling stations in the lake were evaluated at clean category, except that at north part of Longji, which was polluted by organic nitrogen

Spatial distribution characteristics of surface sediments nutrients in Lake Hongze and their pollution status evaluation

In order to investigated horizontal distribution patterns of heavy metals in surface sediments of Hongze Lake, heavy metal contents in every samples were measured by Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) and Atomic Fluorescence spectrometry (AFS) and the potential ecological risks of each heavy metals were analyzed. The average contents of heavy metals Cu, Zn, Pb, Cd, Cr, Hg, As, Fe, Al and Mn are 34.99 mg/kg, 72.44 mg/kg, 18.82 mg/kg, 3.24 mg/kg, 57.59 mg/kg, 0.07 mg/kg, 23.67 mg/kg, 29.63 mg/g, 37.19 mg/g and 0.69 mg/g, respectively. Horizontal distribution patterns of every heavy metals (Cu, Zn, Pb, Cd, Fe, Al, Cr, Hg, Mn and As) in surface sediments were very similar. By impact of hydodynamical and topographical condition, the contents of heavy metals were significantly lower in the inflow river mouth areas than that of open water area in the eastern part of the lake, and that of bays and outflow river mouth areas. This distribution pattern belongs to Turbidity Flood Model. These heavy metals are highly related with each other positively, indicating that they are from the same pollution source. The geo-accumulation index (I(geo)) and the Hakanson potential ecological risk index were applied for assessing the status of sediment heavy metal enrichment and the extent of potential ecological risk. The pollution extent of heavy metals followed the order: Cd > As > Cu > Cr > Zn > Hg > Pb, while the single potential ecological risk of heavy metals followed the order: Cd > As > Hg > Cu > Pb > Cr > Zn. The pollution extent and potential ecological risk of Cd were the most serious among all heavy metals. The distribution pattern of Cd individual potential ecological risk indices is exactly the same as that of general potential ecological risk indices for all heavy metals, indicating the important contribution of Cd in the general indices. Analysis showed that heavy metal pollution and the potential ecological risk existed in three risk regions: the central open water area and outflow river mouth region (S9, S1 and S8), the northern bay region (S6) and the western bay region (S5).

Distribution and potential ecological risk assessment of heavy metals in surface sediments of Hongze Lake

Colonization by Klebsiella variicola FH-1 stimulates soybean growth and alleviates the stress of Sclerotinia sclerotiorum

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Degradation of diclofenac by advanced oxidation and reduction processes: kinetic studies, degradation pathways and toxicity assessments.

Spatial distribution characteristics of surface sediments nutrients in Lake Hongze and their pollution status evaluation

Distribution and potential ecological risk assessment of heavy metals in surface sediments of Hongze Lake

Colonization by Klebsiella variicola FH-1 stimulates soybean growth and alleviates the stress of Sclerotinia sclerotiorum