In order to remediate oil contaminated soil in loess region of North Shaanxi Province,experimental studies on degradation of oil polluted soil were carried out using remediation techniques of optimized in-situ native microbial communities combined with physical chemistry methods.

Substance Source of the Holocene Aeolian Loess-soil and Its Depositional Dynamics in Yuzhou, Henan Province;

Purification and migration characteristics of arsenic in loessial soil;

By the leaching experiment of soil column, the purification of loessial soil to Cr(Ⅵ) and its migration characters were studied from dynamic researches.

In this paper adsorption characters of Cr(Ⅲ) and its trend that C r( Ⅲ) translated into Cr(Ⅵ) and influence factors were studied by isotherm adsorp tion and transform rate experiments in different layers of loessial soil that we re including cultivated horizon, plow pan, argillic horizon and calcic horizon.