Testing the impact of real interest rate,income, and energy consumption on Turkey’s CO2 emissions

Environmental Science and Pollution Research - This paper aims to explore the impact of real interest rates (RIN), income, trade, foreign direct investment (FDI), and energy consumption on...     

氯化亚锡还原光度法测总磷的改进

通过大量试验,对氯化亚锡还原光度法测定总磷过程中如何延长氯化亚锡、磷酸二氢钾试剂的使用保存期、提高显色的稳定度、降低空白值,提出了切实可行的改进方法。     

Distribution of heavy metals and associated human health risk in mine,agricultural and roadside soils at the largest chromite mine of India

Environmental Geochemistry and Health - This study accessed the levels of Cd, Cr, Fe, Mn, Ni, Pb and Zn concentration in soils of different locations (mine, roadside, agricultural and control...     

用分光光度法测定有机质的研究

在强酸性溶液中、165℃和催化剂作用的条件下,土壤中的有机碳被K2Cr2O7迅速氧化,而K2Cr2O7中的Cr6+还原成Cr3+,Cr3+在600nm波长上有特征吸收,其吸光度与有机碳的浓度成正比。根据吸光度可计算出土壤有机质的含量。实验证明试剂和工作曲线的斜率有很好的稳定性和重现性。分光光度法测定有机质快速、准确。     

Effect of the Pretreatment with UV and Gamma Radiations on the Modification of Plywood Surface by Photocuring with Epoxy Acrylate

In order to further improve the physical properties of plywood surface that was pretreated with UV and Gamma radiation at different radiation intensities before photocuring. After pretreatment with radiation the plywood surface was coated with different prepared formulations containing epoxyacrylate (EA-1020) as an oligomer, difunctional monomers such as tripropylene glycol diacrylate (TPGDA), 2-hexadioldiacrylate (HDDA), Ethylene Glycol dimethacrylate (EGDMA) and trifunctional monomer trimethyl propen triacrylate (TMPTA) with photoinitiator Darocur 1664. Thin polymer films were prepared on glass plate with these formulated solutions and cured under UV radiation. Pendulum hardness (PH) and gel content of the film were studied for selecting the formulations as top coat and as base coat. The polished plywood surface was coated with selected formulation and cured under UV radiation. Various rheological properties of UV cured plywood surface such as pendulum hardness, scratch hardness, microgloss, adhesion strength, percentage chipped off area and abrasion resistance were studied.     

氯化亚锡还原光度法测定总磷的改进

用氯化亚锡还原光度法测定总磷时, 实验条件要求比较苛刻。克拉玛依市环境科研中心监测站对延长SnCl2、KH2PO4试剂的使用保存期、提高显色的稳定度、降低空白值的方法做了大量试验。试验表明:SnCl2-40%丙三醇溶液、KH2PO4使用液均有很好的稳定性,使用期达到2个月;钼酸铵溶液中,加入酒石酸锑钾钼蓝显色有良好的稳定性。用本方法和标准方法测定水样的结果无显著差异,其准确度与精密度均能达到要求。