Results 101 to 110 of about 663,249 (149)

低浓度硫代硫酸盐浸金

, 1992
为了降低硫代硫酸盐浸金工艺中试剂材料的消耗,考察了硫代硫酸盐用量,铜的加入量及氨浓度对金浸取率的影响。结果表明:在适当条件下,用0.2 mol/L 硫代硫酸铵浸取液可使金浸出率达95%。与目前一般使用的硫代硫酸盐浸金方法相比,试剂消耗大为降低,同时减少了渣夹带损失,减轻了洗涤负荷 ...
龚乾, 胡洁雪, 曹昌琳
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[Deep eutectic solvent and improved needle filter-based liquid-membrane microextraction combined with high performance liquid chromatography for the determination of sulfonamide and fluoroquinolone residues in milk]. [PDF]

Se Pu
Xu RM, Wu YY, Gu ZH, Wei W, Lu XY, Xia ZH.   +5 more
europepmc   +1 more source

用黄铁矿-硫酸还原浸出软锰矿工艺及动力学研究

, 2016
研究了用黄铁矿-硫酸还原浸出软锰矿,考察了搅拌速度、两矿质量比、固液质量体积比、硫酸浓度及温度对锰浸出率的影响及浸出过程动力学,确定了浸出动力学方程。结果表明:当搅拌速度为300r/min、固液质量体积比为1∶5、硫酸浓度为0.8mol/L、黄铁矿与软锰矿质量比为0.2、反应温度为90℃条件下,锰浸出率达99%以上;浸出过程受化学反应控制,不同硫酸浓度下的反应级数为1.06,不同黄铁矿用量下的反应级数为0.82,表观反应活化能为46.265kJ/mol。
王琪, 冯雅丽, 李浩然, 孙铭, 刘鹏伟   +4 more
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[Application and research progress of metal-organic framework materials in skin repair]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Ma S, Wu W, Liu H, Liu M, Xing F.
europepmc   +1 more source

硫酸化金属氧化物担载型催化剂上CH4选择还原NO反应的机理研究

, 2011
氮氧化物是一种主要的空气污染物。富氧气氛下CH4 选择催化还原NO(CH4-SCR-NO) 是一项极具前景和挑战性的研究课题。本论文采用原位透射红外光谱(FT-IR)和漫反射红外 光谱(DRIFTS)技术分别探索了富氧条件下Pd/SO2- 4 /Al2O3 (Pd/SA)和Mn/SO2- 4 /ZrO2(Mn/SZ) 催化剂上CH4-SCR-NO 的反应中间物种和可能途径。 通过Pd/SA 催化剂上的红外结果发现：载体的硫酸化能够稳定Pd2+离子并降低了催化 剂表面吸附的硝酸盐物种浓度及其稳定性。Pd2+
张洪艳
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[Differences in the mechanisms, diagnostic biomarkers, and therapeutic strategies of drug-induced liver injury caused by traditional Chinese and Western medicines]. [PDF]

Zhong Nan Da Xue Xue Bao Yi Xue Ban
Zhu J, Li W, Zhu Y, Shao N, Zhu J, Hu Y, Dong J.   +6 more
europepmc   +1 more source

[Experimental curriculum design for undergraduates based on the improvement of scientific research abilities： taking determination of pyrimidine fungicides in soil by QuEChERS-gas chromatography-mass spectrometry as an example]. [PDF]

Se Pu
Lyu F, Shan X, Zhao R, Zheng W.
europepmc   +1 more source

酸浸-生物法处理铬渣

, 2006
采用酸浸?生物法处理铬渣以进行有效的还原解毒.首先分析了铬渣的物相和组成,然后鼓入CO2进行酸浸,再结合硫酸盐还原菌浸取和还原.结果表明,经过生物反应36h后,残渣中水溶性六价铬含量降到了2mg/kg,达到了铬盐工业污染物排放标准GB4280 ...
戴昊波, 张懿, 曹宏斌, 李玉平
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[Research progress on maternal factors influencing the risk of autism spectrum disorder in offspring from a gut-brain axis perspective]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Ding HB, Li C, Wu SL.
europepmc   +1 more source

[Nanomaterial-driven Lateral Flow Immunoassay: Technological Development and Application]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Zheng J, Hu X, Gu B.
europepmc   +1 more source