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81.
Yun He Jianyong Liu Chengyuan Shen Xuewen Yi Xiaowei Li Xin Huang Kokyo Oh Guoji Ding 《Frontiers of Environmental Science & Engineering》2022,16(4):43
82.
She X.Yin H.Hu Z.Shi Y. 《应用与环境生物学报》2018,(6):1418-1422
Florasulam is a three azole and pyrimidine sulfonamide herbicide, mainly used for weeds prevention and control in winter wheat fields. The main purpose of this experiment was to study the effects of different doses of Florasulam on soil residues and on the enzymatic activity of wheat cultivated in drylands, and to provide the theoretical basis for a scientific use of florasulam. Five doses (0, 15, 30, 45, and 60 mL/667 m2) of Florasulam were applied in order to detect differences in soil residue content and enzymatic activities. Soil residues and enzymatic activities (catalase, phosphatase, urease, dehydrogenase) were measured and analyzed after the 5 different doses of Florasulam were processed. The residual amount of Florasulam in the soils decreased gradually with the growth phase of wheat, and was lower than that of 0.01 mg/kg. The residual amount of Florasulam in different soil layers gradually decreased with the increase of soil thickness. The enzymatic activity of soils treated with Florasulam was basically T3 > T2 > T1 > CK > T4, where T3 was the highest, whereas T4 could inhibit the enzymatic activity. Under these experimental conditions, in order to decrease soil pollution and lower Florasulam residues, it is recommended to apply Florasulam at a concentration range of 30 to 45 mL/667 m2 © 2018 Science Press. All rights reserved. 相似文献
83.
Removal of Pb(II) from wastewater using wheat bran 总被引:5,自引:0,他引:5
The adsorption of Pb(II) ions from aqueous solutions on wheat bran (WB) has been investigated as a function of initial concentration, adsorbent dose, adsorbent particle size, agitation speed, temperature, contact time and pH of solution. The equilibrium process was described well by the Langmuir isotherm model with maximum sorption capacities of 69.0, 80.7 and 87.0 mgg(-1) of Pb(II) on wheat bran at 20, 40 and 60 degrees C, respectively. Thermodynamic parameters, i.e. DeltaG(0), DeltaH(0) and DeltaS(0) have also been calculated for the system and the sorption process was found to be endothermic. Good correlation coefficients were obtained for the pseudo second-order kinetic model. The metal ion could be stripped by addition of 0.5M HCl, making the adsorbent regeneration and its reutilization possible. 相似文献