[Preparation of a novel graphite electrode and its effect on phenol degradation].

In order to find an effective, stable, environmentally compatible electrode for the elimination of organic pollutants, preparation of a novel graphite electrode (NGE) was explored using graphite, epoxy resin, curing agent and acetone as materials. Water, ethanol aqueous solution, acetone, ultrasound-acetone and electrochemical method were used to pretreat the electrode. The first three methods obtained poor effect.

[Diterpenoids from bulbus of Fritillaria monanth].

To study the chemical constituents of Fritillaria monanth Migo, the constituents were separated and purified by column chromatography on silica gel, and the structures were identified by NMR, MS spectral data. Six compounds were isolated and identified as ent-kauran-15-en-17-ol (I), entkauran-15-en-3alpha, 17-diol (II), fritillaziebinol (III), ent-kauran-16a, 17-diol (IV), ent-kauran-3alpha, 16alpha,17-triol (V), ent-16,17-epoxy-kauran-3alpha-ol (VI). All the compounds were isolated from this plant for the first time, and VI is named as ent-16,17-epoxy-kauran-3alpha-ol, which is a new compound.

[Progress on electrokinetic remediation and its combined methods for POPs from contaminated soils].

Electrokinetic remediation (EK) and its combined methods are emerging technologies to remove POPs from contaminated soils in situ in last decade. This paper reviews the five major kinds of electrokinetic remediation methods for POPs from contaminated soils: (1) Classic electrokinetic method; (2) Electrokinetic-Fenton method; (3) Electrokinetic remediation combining with bioremediation method; (4) Electrokinetic remediation combining with surfactants/cosolvents method; (5) Electrokinetic remediation combining with ultrasonic method. The basic principle, characteristics, application areas and research developments of those five methods are discussed respectively.