Micro-distribution of arsenic and polycyclic aromatic hydrocarbons and their interaction in Pteris vittata L.

Interactive effects of inorganic arsenic (As) species and polycyclic aromatic hydrocarbons (PAHs) on their uptake, accumulation and translocation in the hyperaccumulator Pteris vittata L. (P. vittata) were studied hydroponically.

[Occurrence Characteristics and Health Risks of PAHs on the Surface of Buildings and Devices in the Coking Plant].

The occurrence characteristics of polycyclic aromatic hydrocarbons (PAHs) on the surfaces of buildings and devices in a typical coking plant were analyzed with the samples from different functional zones and materials. The health risk of PAHs was also evaluated. The results showed that PAHs concentrations ranged from 8.

[Persulfate Oxidation Effect of Soil Organic Pollutants by Natural Organic Matters].

This study explored the degradation effect and mechanism of persulfate oxidation activated by different macromolecular substances (polysaccharides, humic acid, and citric acid), combined with ferrous ions and different kinds of carbohydrate (monosaccharide, disaccharide, and polysaccharide). The results showed that the oxidation effects of total petroleum hydrocarbons (TPHs) and polycyclic aromatic hydrocarbons (PAHs) by different activation treatments were in the order:humic acid combined with ferrous ion > polysaccharide > citric acid chelated with iron > polysaccharide combined with ferrous ion > disaccharides > monosaccharide > CK. Among them, humic acid combined with ferrous ion-activated persulfate achieved the highest removal rates (up to 79.

[Influence of Arsenate and Phenanthrene on Carbon-groups of L. Roots].

To ascertain absorption of arsenate and phenanthrene as well as their influence on carbon groups in excised roots of L., the chemical structure of the carbon groups in excised roots was characterized by solid stateC-Nuclear Magnetic Resonance (C-NMR). The results showed that the excised roots could effectively absorb As and PHE without transpiration, and PHE promoted As accumulation in the roots.

[Occurrence Characteristics of Pyrene and Arsenate and Their Interaction in Pteris vittata L].

Pteris vittata L. can absorb and accumulate high arsenic levels in soil. To clarify the occurrence characteristics of pyrene (PYR) and arsenate (As) as well as their interaction in P.