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Streptomycin (STR) was the bactericidal antibiotic used extensively in human and veterinary medicine with a high aqueous solubility. In this study, the adsorption of STR on soil was studied as a function of pH, cationic types and ionic strength by using adsorption modeling and bath experiments. Adsorption modeling of the adsorption of STR was better fitted with the Freundlich as compared to the Langmuir. The absorbed STR on soil kept relatively constant at pH 3.5-8 and decreased at pH>8. And the order of cationic influence was CaCl2> NaCl≈KCl> the blank sample for STR sorption capacity, suggesting that the sorption of STR increased as the presence of low concentrations of the cationic. The amount of STR adsorbed was inversely proportional to the logarithmic concentration of the background cations.

Although surfactants have been considered in surfactant-aided soil washing systems, there is little information on the adsorption of the impact of surfactant on the adsorption of antibiotic, and this may have significant implications for the soil. In this study, Triton X-100 and SDBS were selected to study its effect on the sorption of Streptomycin sulfate from soil under equilibrium sorption. The adsorption of Streptomycin sulfate on soils in surfactant free and surfactant solutions of different critical micelle concentrations (CMCs) has been studied .The applied surfactant concentrations (X) ranged from below the (nominal) CMC to 5 times the CMC. For relatively water-soluble Streptomycin sulfate, the distribution coefficients with anionic surfactant (Kd*) deceeded those without surfactant (Kd), while non-ionic (Kd*) all exceeded those without surfactant (Kd). The Kd*/Kd ratios were used to evaluate the efficiency of surfactants and it was found that anionic surfactant is a better choice for remediation of contaminated soils whereas non-ionic surfactants leads to poor remediation efficiency.

The best choice for the openness and integration between Changchun city and Jilin City is to carry out the Integrate. This paper analyzes the environment quality conditions of Chang-Ji region and the selection of pollutant control materials, and points out the pressure and challenges of environmental protection, and puts forward the Suggestions that can solve the problem.

A set of accurate, effective and operable methodology can ensure the normalization, standardization and transparency of each operating link in the process of emission trading. On the basis of introducing the fundamental thought of emission trading, this paper summarizes the research achievements and methods of emission trading mechanism methodology, and indicates that the innovative research of emissions trading mechanism methodology provides significant technical support for the implementation of emission trading in China.

An ionic liquid, 1-butyl-3-methylimidazolium tetrafluoroborate( [BMIM] BF4) / salt aqueous two-phase systems (ATPS) was presented as a simple, rapid and effective sample pretreatment technique coupled with double-beam UV-Vis spectrophotometer for analysis of gatifloxacin in water. For the purpose to choose optimal conditions, various factors were considered systematically, and the results indicated that the pH value, the salt-out ability of salt and the amount of [BMIM] BF4 had great influence on phase separation and extraction. Under the optimal condition, gatifloxacin in different concentration were enriched and determined, the recovery was 87.3–91.5%.