Medical molecular chemistry Laboratory of Hebei Province

Shijiazhuang, China

Medical molecular chemistry Laboratory of Hebei Province

Shijiazhuang, China
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Shen H.-Y.,Hebei University of Science and Technology | Shen H.-Y.,Medical Molecular Chemistry Laboratory of Hebei Province | Cao Z.-H.,Hebei University of Science and Technology | Cao Z.-H.,Medical Molecular Chemistry Laboratory of Hebei Province | And 2 more authors.
Zhongguo Huanjing Kexue/China Environmental Science | Year: 2016

To study the effects of heavy metal Cd and Cu in freshwater sediment on the freshwater benthic organism, the burrowing behavior of Corbicula fluminea within 12 hours and survival rate during 10days were analyzed. The results showed that Corbicula fluminea exhibited a significant avoidance behavior to the spiked Cd and Cu in freshwater sediment. Within 12 hours, the response of Corbicula fluminea to Cd in sediment is more sensitive than Cu. Under exposure to Cd and Cu at 10 mg/kg, the burrowing rate of Corbicula fluminea were 0.39 and 0.43, respectively. In the survival test during 10 days, the survival rate of Corbicula fluminea decreased corresponding to the increase of Cd and Cu concentrations. At 10 mg/kg of spiked Cd in sediments, the survival rate of Corbicula fluminea was 93.3%. However, the survival rate dropped to 43.3% at 300 mg/kg. For spiked Cu in sediment, the survival rate of Corbicula fluminea was 96.3% at 10 mg/kg and decreased to 34.3% at 500 mg/kg. The LC50 of Corbicula fluminea were 285 mg/kg for spiked Cd and 690 mg/kg for spiked Cu, respectively. All these data revealed that Corbicula fluminea was more sensitive to the toxicity of Cd. By comparing the indicative features of burrowing behavior and survival rate of Corbicula fluminea when exposed to heavy metal Cd and Cu, burrowing behavior was found to be more quickly and more obviously than survival rate., indicating that a high priority should be given to burrowing behavior in heavy metal contamination monitoring. © 2016, Chinese Society for Environmental Sciences. All right reserved.


Shen H.-Y.,Hebei University of Science and Technology | Shen H.-Y.,Medical molecular chemistry Laboratory of Hebei Province | Cao Z.-H.,Hebei University of Science and Technology | Cao Z.-H.,Medical molecular chemistry Laboratory of Hebei Province | And 7 more authors.
Zhongguo Huanjing Kexue/China Environmental Science | Year: 2015

To study the effects of farmland on macroinvertebrates, macroinvertebrates were collected from the north and south tributaries of Taizi River. And their response to farmland was discussed using non-metric multidimensional scaling analysis (NMS) and canonical correspondence analysis (CCA). The results show: The north tributary of Taizi River species composition mainly was Chironomidae, followed by Trichoptera and Ephemeroptera, and Hymenoptera in less relative abundance; while the south of tributary mostly were Ephemeroptera, Hymenoptera and Trichoptera, and the relative abundance of Chironomidae declined. Meanwhile, the main functional feeding groups of the north tributary were collector-gatherers and collector-filterers, scrapers and predator were less, almost no shredders; but the south tributary had various functional feeding groups, collector-gatherers and scrapers were more. There were significant differences on water temperature, pH, conductivity, suspended solids (SS), total dissolved solids (TDS) and total nitrogen (TN) between the north and south tributaries of Taizi River. Water temperature, conductivity and TDS of the north tributary were significantly higher than that of the south tributary; the water of two tributaries was all alkalescent water, and the average pH of the south tributary was higher than that of the north tributary; the SS and TN of the north tributary were slightly higher than that of the south tributary. Using CCA to carry out the land use factors impact on water quality, the result showed that farmland area ratio on the first axis of the contribution rate was highest in reach scale and river corridor scale, respectively-0.76 and-0.79; and the correlation between water quality factors and land use was 0. 84 on river corridor scale and 0. 71 on reach scale. From the CCA analysis between land use types and species can be seen, on the directions of farmland, beach and residential land mostly were tolerance and moderate tolerance groups, but fewer species distribution along the direction of farmland. On the contrary, in the fourth quadrant opposite of the dry land axis mostly were Baetidae (such as B. bicaudatus) and other sensitive groups. ©, 2015, Zhongguo Huanjing Kexue/China Environmental Science. All right reserved.


Shen H.-Y.,Hebei University of Science and Technology | Shen H.-Y.,Medical Molecular Chemistry Laboratory of Hebei Province | Cao Z.-H.,Hebei University of Science and Technology | Cao Z.-H.,Medical Molecular Chemistry Laboratory of Hebei Province | And 4 more authors.
Zhongguo Huanjing Kexue/China Environmental Science | Year: 2015

According to the data obtained from field investigation in Taizi River basin during August 2009, five main functional feeding groups were analyzed, including collector-gatherers (gc), predator (pr), collector-filterers (fc), shredders (sh) and scrapers (sc). Gc represented a significant dominant in the macroinvertebrates community, which accounting for 85.5% of the total number of benthic animal individuals; followed by fc, sh, sc and pr, which accounting for 6.0%, 3.0%, 5.5% and 0.0% respectively. Gc had a strong tolerance to human disturbance, while pr, sh and sc were more sensitive to the change of environmental state. Through the correlation analysis between the relative abundance of five functional feeding groups and water quality factors, the result showed that gc was correlated with altitude, water temperature, conductivity, total nitrogen, nitrate and nitrite, while pr, sc and sh were correlated with altitude, temperature, conductivity, pH, total nitrogen and nitrite. Furthermore, through stepwise regression analysis between land use patterns and five functional feeding groups, the farmland and beachland had significant influence factors on gc, while farmland had significant effects on pr, sc and sh. ©, 2015, Chinese Society for Environmental Sciences. All right reserved.

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