共搜索到323条信息,每页显示10条信息,共33页。用时:0小时0分0秒691毫秒
文章编号:1004-0609(2011)07-1734-07
氧化铝生产过程能耗的
汞齐捕集-原子吸收光谱法测定铜精矿中汞含量郭芬1,苏明跃2,谷松海2(1.天津市天津出入境检验检疫局 2.天津出入境检验检疫局,天津 300456)摘 要:无需进行样品消化处理,铜精矿粉末样品在253.7 nm处用直接测汞仪进行分析,5~6 min即可获取结果.为减少样品中汞对仪器的毒害同时保证测定结果的准确,样品取样量选择为0.15 g;同时,采用单个测定方式可减少样品舟存在的记忆效应.方法的检出限为0.2μg/kg.对3个不同含量范围铜精矿国家标准物质中的汞进行测定,结果同国标法的测定结果一致,相对标准偏差......
, was synthesized under the simulated Bayer digestion condition during the alumina production. The effects of dissolved organic compounds including sodium formate, sodium acetate, sodium oxalate... of humates, lignin and cellulose [3]. On digestion of this bauxite in the Bayer process, 50%-90% of the organic compounds may be extracted into the Bayer liquor as dissolved organic compounds......
[J]. Hydrometallurgy, 2016, 165: 261-269. [16] JIANG Tao, PAN Xiao-lin, YU Hai-yan, HOU Xian-lin, TU Gan-feng, ZHANG Ren, Lu Yu. Effect of lime addition during digestion on stability of digested liquor... was investigated through simulating the digestion conditions of gibbsitic bauxite, the mechanism of which influencing the stability of sodium aluminate solution was also discussed by the XRD, SEM-EDS......
the animal passive smoking pattern. The samples were prepared by microwave digestion and determination of 7 kinds of heavy metals, i.e., Hg, Se, Sn, Pb, Cd, Ni and Cr, were performed by inductively......
Gui-xiang, ZHAO Zhong-wei (School of Metallurgy and Environment, Central South University, Changsha 410083, China) Abstract: A new process was proposed for the digestion of synthetic scheelite (CaWO4......
formed could resist digestion of DNase in the serum. The tests of cell by microscopy show that the most of nanoparticles can enter the cells when fluorescence nanoparticles are cultured with live......
, United Kingdom Received 3 January 2017; accepted 24 April 2017 Abstract: Bauxite residue, a highly saline solid waste produced from digestion of bauxite for alumina production, is hazardous......
inhaling three different kinds of cigarette was studied through the animal passive smoking pattern. The samples were prepared by nitric acid solution digestion and determination of seven kinds... and MAS microwave digestion system (CEM Corporation of USA) were employed in the present work. The ICP-AES operating parameters were listed in Table 1. Table 1 ICP-AES operating parameters 2.3......
......