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solution 本研究采用的石墨烯为常州第六元素材料科技股份有限公司生产的氧化还原石墨烯.化学镀具体工艺如下:将2 g氧化还原rGO加入500 mL浓度为20 g/L的SnCl2和20 mL/L的HCl混合溶液中煮沸5 min,反复洗涤至中性后加入到200 mL银氨溶液中室温机械搅拌4 min,反复洗涤至中性后进行化学镀.化学镀液以硫酸铜为主盐,甲醛为还原剂,EDTA与酒石酸钾钠为络合剂,2,2-联吡啶与......
analyses were conducted by SEM (JSM-6360LV, JEOL, Japan) and EDS (GENSIS60S, EDAX, USA). The Al2O3, SiO2 and Na2O contents in the leachate and leached residue were measured by the EDTA volumetric ......
釜的气密性,多次引入氮气(≥99.2%)并反复排出以获得完全的氮气氛围.调节釜内总压强为1.6 MPa,随后加热搅拌,搅拌转速为300 r/min,达到设定温度快速取样,保持温度和压力不变,停止搅拌5 min后再次取样.取样液保存,测量样液中各种离子的浓度. 1.2 分析与检测 采用重铬酸钾滴定法测量Fe2+离子和Fe3+离子的浓度,采用EDTA滴定法和原子吸收分光光度计......
PALMA L, MECOZZI R. Heavy metals mobilization from harbour sediments using EDTA and citric acid as chelating agents[J]. Journal of Hazardous Materials, 2007, 147(3): 768-775. [31] DERMONT G, BERGERON......
. 1.4 测试方法 锌的分析采用EDTA滴定法测定,具体步骤参照国标GB/T8151.1─2000[12].采用日本JEOL公司的JSM?5600LV型扫描电镜观察样品的形貌.用英国马尔文公司的Mastersize 2000型激光粒度分析仪测粒度分布.测试样品粒度时,以去离子水为分散介质.热重分析用Mettler Toledo TGA/SDTA 851分析仪,升温速率为10 K......
several times by Tris·HCl- EDTA(TE) (pH8.0) buffer. Genomic DNA was extracted by EZ-10 Spin Column Genomic DNA Minipreps Kit according to the operation instruction of the Kit. 2.5.2 Amplification......
子药物的相互作用研究 是近年来很活跃的前沿研究领域之一.Fe[EDTA]2-[2],Cu(phen)22+[3],水溶性金属卟啉,二茂铁[4]和[Nd2(bbimp)(CH3COO)(CH3CH2O)2(CH3CH2OH)](ClO4)2[5]等具有识别或断裂DNA的功能,但人们对稀土配合物的研究较少.稀土金属形成配合物后可以降低它的毒性而且使药物具有稀土功能的独特性.钐除了可用于制备......
kind of solutions were joined in the EDTA solution to form a mixture, stirred by the magnetic force and synthesized for 6 h. Then, the mixture was evaporated to be a brown-black loose xero-gel......
土研究所有限公司产品);吖啶橙(AO,A.R,成都科龙化工试剂厂);乙二胺四乙酸钠(EDTA,A.R,广东光华化学厂有限公司);其他试剂,均为分析纯;水,为二次重蒸水. 1.2 实验方法 1.2.1 配制Sm(Ⅲ)Cl3溶液 用浓盐酸将Sm(Ⅲ)2O3溶解,小火蒸发掉水和过量的盐酸至白色粉末状,加Tris-HCl缓冲溶液配制成一定浓度的Sm(Ⅲ)Cl3溶液. 1.2.2 光谱法......
chloride solution. Both calcium and magnesium were determined by complexometric titration against EDTA using calcium indicator and Eriochrome-Black T indicators. Silica content was determined......