The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Photo-Fenton reaction is a kind of advanced oxidation technology based on the reaction of hydroxyl radical. In order to further enhance the photocatalytic efficiency, with citric acid as the catalytic additive, and malachite green as the substrate, experiments on the photocatalytic oxidation of organic pollutants in UV/Fenton/Citric acid system were carried out. Effect of Fe(II) concentration, initial...
Ontology is deemed as an effective means in the field of information integration. However, environmental data, which involves various kinds of data such as spatio-temporal data about air, land, water as well as non nature data about social and economic issues, is quite distinct to general data. Currently how to use ontology for environmental data integration was seldom discussed. This paper presents...
This study is supported by the agriculture geochemical survey project in Dakang town, Jiangyou city. By analyzing the heavy metals and organic pollutants contained in the surface soil, a assessment of soil quality is made in the study area by introducing single-index and comprehensive-index evaluation analysis, as well as by using GIS .The evaluation shows that nearly 1/3 areas of the land in the...
In this paper, a probe into the stabilization effects of ferrous sulfate (FeSO4) came from two aspects-stabilization efficiency and leachate content. Fe/As molar ratio, arsenic pollution intensity, soil pH, reacted time interval, competitive ions, such as sulfate(SO42-), phosphate(PO43-) and zinc ion(Zn2+), were studied in order to discuss their effects on the stabilization of arsenic. Results show...
Study on electronic scrap (ES) reutilization has important significance and application values, which can not only achieve secondary resources recycling, but also prevent environment pollution. Waste printed circuit board (PCB) is the most important parts of ES and also one of the most arduous jobs to deal with because of its heterogeneity and high complexity. The distinct difference of conductivity...
The purpose of this study was to investigate the resort hotel tourists' attitude toward green consumption. Questionnaires were used in this survey research and were distributed to subjects derived from non-probability convenience sampling. 240 tourists in resort hotels of Alishan area were surveyed, 182 questionnaires were given back with return rate of 76%. Descriptive statistics, independent t-test...
International pollution control requires cooperation by regions to internalize the negative externalities of pollution. A number of studies proved that the incentives to cooperate will be very sensitive to the way the transfer rule is designed. Based on the idea of Vickrey-Clark-Groves mechanism, this paper designs an incentive mechanism to implement the dynamic cooperation in international pollution...
The average level of indoor radon concentration for the residence in the uranium ore district is 282Bq/m3 and the maximum value can up to 570Bq/m3 which exceed the national top limited value (200Bq/m3). Indoor radon pollution of the residence is very serious. In order to find out the reason of radon pollution, the main environmental factors are investigated. Through the calculations of Gaussian atmospheric...
Twelve species of marine organisms were collected from the Xing Hua Bay (XHB), South China and were analyzed for 19 OCPs, including hexachlorocyclohexane isomers (HCHs), and DDT and its metabolites (DDTs), by GC-ECD. Date on mass fraction of persistent toxic substances in the marine organisms, were investigated and assembled. In XHB, DDTs mass fraction was greater than other toxic substances, the...
To attempt to understand the differences between rice genotypes in lead (Pb) tolerance, pot soil experiments were conducted with two rice genotypes at different soil Pb levels, i.e. 0 (the control), 800, 2000 mg kg-1. The results showed that the soil Pb concentration of 800 mg kg-1 is moderately toxic to rice, with 10%-30% decreases in plant biomasses. The soil Pb concentration of 2000 mg kg-1 is...
In this issue, the effect of toluene diisocyanate on the mice blood secrum was studied to discuss its mechanism of EOS infiltration and conglomeration, which was the emblematical character of vocational asthma. Effects of TDI on the mass concentrations of IL-4, IL-5 in mice serum and granulocyte-macrophage colony-stimulating factor was observed by double-antibody sandwich enzyme-linked immunosorbent...
The formaldehyde instantaneous concentration formula at a specific air exchange rate before the environment cabin is in the stable state is theoretically obtained, based on the basic formula of the formaldehyde concentration in the environment test cabin simulated as the indoor environment. The formaldehyde instantaneous concentration formula has been confirmed in the experiment about the relationship...
The effect of Di-(2-ethylhexyl) Phthalate was investigated when alga Scenedesmus obliquus has been exposed to different concentrations (5, 10, 20, 40 and 80 mg · L-1) at 24, 48, 72 and 96 hours of exposure. Toxicity test was done by using four biomarkers including growth inhibition rate and the content of chlorophyll a, chlorophyll b and carotenoid. This study indicated that with the increase concentration...
The pathogenesis of collagen pathway on the metabolism disorder of bone and cartilage induced by chronic aluminum (Al) exposure was studied. One hundred Wistar rats were divided randomly into two groups. Experimental rats were given drinking water containing Al chloride (400 mg/L, Al3+), while control rats were given distilled water for up to 150 days. Ten rats were sacrificed in each group every...
13 kinds of typical Environmental Endocrine Disruptors (EEDs) in human serum were detected by Gas Chromatography-Mass Spectrometry-Selected ion Monitoring (GC-MS-SIM) simultaneously, and thirty copies of female serum samples (aged from 10 to 45) collected in Sichuan province, China were detected based on this method. GC-MS-SIM detection, internal standard method, TMCE+TMCS derivatization were used...
By improving chromatographic resolution and Mass Spectrometry scanning method, an isotope dilution method which can detect Naphthalene, Acenaphthene, Phenanthrene and Chrysene in water samples is established. Compared with Liquid-liquid Extraction, double Purification of solid phase extraction column and Silica Gel Column is more suitable for large volume injection. Their retention behavior of solid...
The objective of this study is, basing on the geochemical survey project of agriculture land, to assess the pollution levels of heavy metal in agriculture soil in Weicheng town, Mianyang city. The pollution assessments to soil heavy metals are performed by introducing SF (single factor) and CF (combined factors) pollution index analysis. The evaluation shows that there are obvious differences of heavy...
In this paper, flue-cured tobacco cultivar (Nicotiana tabacum L. K 326) was selected to explored responses of flue-cured tobacco plants to different concentration of lead (Pb) or cadmium (Cd). The plants were grown in nutrient solution in lab under the controlled condition. Research showed dry weights of each organ and whole plant and values of botany characters and Chlorophyll contents of upper leaf...
Soil contamination with polycyclic aromatic hydro-carbons (PAHs) is an increasing problem in China. An field survey was conducted in the industrial field and adjacent soils of Benxi Iron and Steel Group Corporation of Benxi, China to investigate the contents and distribution of the PAHs of soil, and a health risk assessment was carried out with total toxicity equivalence concentration (TTEC) of 15...
The research objectives of the study are to manufacture nano-TiO2 with doping Fe3+, Ce3+ and La3+ adopting impregnation method, examine the effects of the preparing condition on catalyst performance, and explore the influence of the adding account of metal ions and different ion-combinations on the photocatalytic activity of modified nano-TiO2. The experiment results support the following three conclusions...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.