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| 1 | Occurrence and distribution of metals and porphyrins in Nigerian coal minerals显示文摘The metal contents of Nigerian coal minerals were analyzed using an atomic absorption spectrophotometer. Calcium, Na, and Fe occurred as the major elements with concentrations ranging from 9 782 μg/g for Ca to 432 μg/g for Na whereas K, Mg, Mn, Ni, Cr, Zn, Pb, and Cu, which occurred at trace levels ranged from 673.73 μg/g for Mg to 2.97 μg/g for Mn. The results of the quantitative analysis of porphyrins extracted from the coal minerals showed that Onyeama coal has the highest amount of porphyrins (ca~0.96 μg/g) while Okpara has the lowest (ca~0.30 μg/g). The porphyrins were qualitatively characterized by a combination of thin layer chromatography (TLC), infrared, and ultraviolet-visible spectrophotometers. The results of the mid infrared analysis (MIR) showed the presence of absorption bands at 3 440 cm~1~3 450 cm-1 and 1 640 cm-1~1 680 cm-1 , which are owing to the stretching vibrations of N ─ H and C─ C of aromatics, with C─ H out of plane (oop) bending vibrations at wavenumbers less than 900 cm-1, all of which are characteristic absorptions of porphyrin free base. The ultraviolet-visible data showed prominent peaks at ~400 nm(Soret band) and at wavelength ranges of 535 nm~550 nm(β-band) and 565 nm~ 600 nm (α-band) for the coal porphyrins analyzed. The geochemical significance of the metals and porphyrins in coal minerals are discussed. | OLAJIRE A A AMEEN A B ABDUL-HAMMED M ADEKOLA F A | 2007 | 燃料化学学报2007，35，6： | 4 |
| 2 | 尼日利亚钛铁矿的矿物学特征和浸出行为(英文)显示文摘研究尼日利亚钛铁矿矿物学特征和经机械活化和碱性焙烧处理后的浸出行为。研究了NaOH/矿石比、H2SO4浓度、浸出和焙烧温度对钛回收率的影响。结果表明,机械活化对钛铁矿石的浸出有明显的增强作用。钛铁矿经机械活化后,加入60%NaOH在850°C下焙烧,在温度为90°C,经60%H2SO4浸出4 h下的浸出率为72%。对焙烧矿、水处理后残渣和酸浸滤渣的XRD物相分析证实了反应机理和实验结果。 | A. A. BABA S. SWAROOPA M. K. GHOSH F. A. ADEKOLA | 2013 | Transactions of Nonferrous Metals Society of China2013，23，9： | 2 |
| 3 | Advances in adjuvant therapy of gastroin- testinal stromal tumors 显示文摘 | Adekola K Agulnik M | 2012 | Curr Oncol Rep2012，14，4： | 1 |
| 4 | A Review on Novel Techniques for Chalcopyrite Ore Processing显示文摘 | Baba A A Ayinla K I Adekola F A | 2012 | International Journal of Mining Engineering and Mineral Processing2012，1，1： | 1 |
| 5 | The dependence of shear-lag on partialinteraction in composite beams 显示文摘 | Adekola A O | 1974 | International J ournal u fSolids and Structures1974，10，4： | 1 |
| 6 | Herpes simplex virus-1 encephali- tis : a review of current disease management with three case reports 显示文摘 | Skelly MJ Burger AA Adekola O | 2012 | Antivir Chem Chemother2012，23，1： | 1 |
| 7 | Isoniazid-Induced Psychosis显示文摘 | Schrestha Sacheen Alao Adekola | 2009 | Psychosomatics2009，，： | 1 |
| 8 | Sorptive Interaction of Oxyanions with Iron Oxides: A Review 显示文摘 | Adegoke H I Adekola F A Fatoki O S Ximba B J | 2003 | Polish Journal of Environmental Studies2003，22，1： | 1 |
| 9 | Leydig cell aging and hypogonadism显示文摘 | Beattie MC Adekola L Papadopoulos V | 2015 | Experimental Gerontol ogy2015，，68： | 1 |
| 10 | On shear lag effects in orthotropic composite beams 显示文摘 | ADEKOLA A O | 1974 | International Journal of Solids Structures1974，10，4： | 1 |
| 11 | Bioleaching of Zn(II)and Pb(II)from Nigerian sphalerite and galena ores by mixed culture of acidophilic bacteria显示文摘 | BABA A A ADEKOLA F A ATATA R F AHMED R N PANDA S | | 0，，： | 1 |
| 12 | Hydrometallurgical processing of a Nigerian sphalerite in hydrochloric acid: Characterization and dissolution kineties显示文摘 | Baba lafara A Adekola Folahan A | 2010 | Hydrometallurgy2010，101，： | 1 |
| 13 | Human exposure, biomarkers, and fate of organotins in the environment 显示文摘 | OKORO H K FATOKI O S ADEKOLA F A | 2011 | Reviews of Environmental Contamination and Toxicology2011，213，1： | 1 |
| 14 | Hydrometallurgical processing of a Nigerian sphalerite in hydrochloric acid:Characterization and dissolution kinetics显示文摘 | Baba A A Adekola F A | 2010 | Hydrometallurgy2010，101，1： | 1 |
| 15 | Effective widths of composite beams of steel and concrete 显示文摘 | Adekola A O | 1968 | Structural Engineer1968，46，9： | 1 |
| 16 | The incidence of electrolyte and acid-base abnormalities in critically ill patients using point of care testing (i-STAT portable analyser) 显示文摘 | Adekola OO Soriyan OO Meka I | 2012 | Nig Q J Hosp Med2012，22，： | 1 |
| 17 | Trace element characterisation of Cretaceous Orange Basin hydrocar bon source rocks显示文摘 | Akinlua A Adekola S A Swakamisa O | | 0，，10： | 1 |
| 18 | Endocan, a putative endothelial cell marker, is elevated in preeclampsia, decreased in acute pyelonephritis, nd unchanged in other obstetrical syndromes显示文摘 | Adekola H Romero R Chaemsaithong P | 2014 | The Journal of Maternal-Fetal & Neonatal Medicine2014，28，14： | 1 |
| 19 | Hydrometallurgical processing of a Nigerian sphalerite in hydrochloric acid characterization and dissolution kinetics显示文摘 | BABA A A ADEKOLA F A | | 0，，1： | 1 |
| 20 | Development of a combined pyro-and hy dro-metallurgical route to treat spent zinc - carbon batteries 显示文摘 | Baba A A Adekola A F Bale R B | 2009 | Journal of Hazardous Materials2009，171，13： | 1 |
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