[Distribution of Micro-plastics in the Soil Covered by Different Vegetation in Yellow River Delta Wetland].

Micro-plastics (MPs) pollution has been a hotspot in soil environment. To explore the correlation of the vegetation cover and the distribution of MPs in Yellow River Delta wetland, the characters of MPs in the soil sampled at 16 sites where reed (, a low-salt dominant species) and (a high-salt dominant species) covered were investigated. The abundance of MPs here ranged to 80-4640 n·kg, and the particle size ranged to 13 μm-5 mm.

[Changes of Microbial Community Structure in Activated Sludge Bulking at Low Temperature].

The mechanism of activated sludge bulking in Zhengzhou wastewater treatment plant was studied by measurement of water quality parameters and high-throughput sequencing technology. The change of SVI value was significantly negatively correlated with the seasonal temperature variation, and sludge bulking was easy to occur during December to the next April, but the water quality was not affected. The result verified by high-throughput sequencing technology analysis showed that the microbial community structure of bulking sludge was significantly different from that of the non-bulking one.

[Application of zebrafish microarray on the toxicity mechanism study of bisphenol A].

The toxicity mechanism of bisphenol A (BPA) to zebrafish (Danio rerio) was studied in the molecular level,by the method of zebrafish microarray and quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR). Zebrafish embryos were exposed to 0.5, 1.

[Bioaccumulation and toxicity test of diethylstilbestrol to zebrafish (Danio rerio) embryo].

The bioaccumulation regulation and the toxicity of diethylstilbestrol (DES) were studied on zebrafish (Danio rerio) embryos with the methods of HPLC and early life stage test, and the toxic mechanisms were also discussed with the techniques of quantitative structure-activity relationship (QSAR) and gene chips. After the zebrafish embryos exposed at 0.2 mg x L(-1) DES for 24, 48 and 72 h, the body levels of DES in zebrafish embryo were (25.

[Oxidative damages of long-term exposure to low level fullerenes (C60) in Carassius auratus].

To determine the potential effects of fullerenes (C60) on aquatic organism, larval Carassius auratus was exposed to low level C60 (0.04-1.0 mg x L(-1)) for 32 days.