胡斌
等离子体光谱/质谱分析和联用技术,辉光放电光谱/材料成分及表面分析,样品预处理技术,生物和环境体系中元素形态分析,纳米材料分离分析等研究
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- 姓名:胡斌
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学术头衔:
博士生导师
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学科领域:
分析化学
- 研究兴趣:等离子体光谱/质谱分析和联用技术,辉光放电光谱/材料成分及表面分析,样品预处理技术,生物和环境体系中元素形态分析,纳米材料分离分析等研究
胡斌,1982年进入武汉大学化学系学习,1992年获得博士学位以后留校任教,从事分析化学研究与教学;1996~1998年在美国Clemson大学进行访问学者/博士后研究; 2001年任德国Duisburg大学客座教授, 2002年任德国GKSS政府研究中心客座研究员;现为武汉大学教授,博士生导师。
现任武汉大学分析科学研究中心副主任,湖北省化学化工学会环境化学专业委员会委员;《分析科学学报》编辑部,《分析试验室》编委等职。主要从事等离子体光谱/质谱分析和联用技术,辉光放电光谱/材料成分及表面分析,样品预处理技术,生物和环境体系中元素形态分析,纳米材料分离分析等研究。近几年来,承担国家级和省部级各类基金项目19项,其中主持国家自然科学基金、湖北省青年杰出人才基金、教育部基金等11项。已在国内外重要学术刊物上正式发表论文131篇,其中SCI学术刊物85篇(含影响因子为5.250的1篇,3.592的1篇,3.200的14篇),合作出版专著一部,所发表的论文被其他作者在SCI刊物上发表论文时200多次。1995年获国家教委科技进步三等奖,2003年获教育部自然科学奖二等奖。1998年荣获武汉大学首届珞珈青年赤子奖,1999年荣获湖北省第四届青年科技奖,2000年被评为第四届武汉大学十大杰出青年。2003年获湖北省政府津贴。
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994
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成果数
15
胡斌, B. Hu*, Z. Jiang, Y. Qin, Y. Zeng
Analytica Chimica Acta 319 (1996) 255-264,-0001,():
-1年11月30日
A method was developed to determine refractory elements by inductively coupled plasma-atomic emission spectrometry (ICP-AES) with sample introduction by electrothermal vaporization (ETV). A slurry of polytetrafluoroethylene (PTFE) was used as fluorinating reagent to promote the vaporization of refractory elements from a graphite furnace and to avoid the formation of difficult volatile carbides. With this treatment the refractory elements can be efficiently vaporized, and subsequently introduced into the plasma. The detection limits of this method were in the picogram to sub-nanogram range and superior to those obtained with conventional nebulization systems, and were comparable with those obtained with similar ETV-ICP-AES techniques. The analyte vaporization and transport process was systematically explored, and the corresponding vaporization and transport mechanisms of refractory elements in this system have been proposed. The matrix effects and sample particle size effects in fluorination assisted ETV-ICP-AES were significantly reduced. Therefore, an effective method for lowering the matrix interferences has been proposed.
Atomic emission spectrometry, Inductively coupled plasma spectrometry, Refractory, ements, Polytetrafluoroethylene slurry
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胡斌, Linbo Xia, Bin Hu, *, Zucheng Jiang, Yunli Wu, and Yu Liang'
Analytical Chemistry, Vol. 76, No.10, May 15, 2004,-0001,():
-1年11月30日
A new method of single-drop microextraction combined with low-temperature electrothermal vaporization (LTETV)-ICPMS was proposed for the determination of trace Be, Co, Pd, and Cd with benzoylacetone (BZA) as both extractant and chemical modifier. Several factors that influence the microextraction efficiency, such as sample flow rate, microdrop volume, and extraction time, were investigated and the optimized microextraction conditions were established. Be, Co, Pd, and Cd in the postextraction organic phase were directly determined by LTETV-ICPMS with the use of BZA as chemical modifier. The chemical modification of BZA in LTETV-ICPMS was studied, and the factors affecting the formation of chelates and vaporization/ transportation of chelates were investigated. Under the optimized conditions, the detection limits of the method were 0.12, 0.99, 1.5, and 0.27pg/mL for Be, Co, Pd, and Cd, and the relative standard deviations for 0.1ng/mL Be, Co, Pd, and Cd were 16, 14, 14, and 11%, respectively. After 10min of extraction, the enrichment factors were 160 (Be), 125 (Co), 40 (Pd), and 180 (Cd). The proposed method was applied to the determination of trace Be, Co, Pd, and Cd in biological reference materials, and the determined values were in good greement with the certified values.
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胡斌, SHENG QIN G LI, BIN HU, *, ZU CHENG JIANG, PEI LIANG, XUAN LI, AND LIN BO XIA
Environ. Sci. Technol. 2004, 38, 2248-2251,-0001,():
-1年11月30日
A new method for the determination of free La3+ and La organic complexes in solution using a nanometer-sized titanium dioxide as solid-phase extractant and fluorinationassisted electrothermal vaporization (FETV)-ICP-AES as sensitive detector has been developed. The effect of pH on the adsorption characteristics of La3+ and La complexes of citric acid, 2-hydroxyisobutyric acid (HIBA), and humic acid on nanometer-sized TiO2 was investigated and optimized. On the basis of the difference in volatility between fluoride of analyte (lanthanum) and the fluoride of matrix (titanium), an in-situ removal of the adsorbent matrix (TiO2) from a graphite furnace was realized. Therefore, the free La3+ and adsorbed La complexes on nanometersized titanium dioxide could be determined respectively by FETV-ICP-AES without any other chemical pretreatment. The proposed method was applied for the determination of free ion (La3+) and La complexes in synthetic solutions and soil extracts with satisfactory results.
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胡斌, Xuli Pu, Zucheng Jiang, Bin Hu* and Haibo Wang
J. Anal. At. Spectrom., 2004, 19, 984-989,-0001,():
-1年11月30日
Nanometre-sized alumina was chemically modified with c-mercaptopropyltrimethoxysilane (c-MPTMS). The modified nanometer-sized alumina was characterized by X-ray power diffusion (XRD), X-ray photoelectron energy spectrometer (XPS) and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) before it was used as solid phase adsorption material for the inductively coupled plasma mass spectrometry (ICP-MS) determination of trace amounts of Hg, Cu, Au and Pd. The effects of pH, sample flow rate and volume, elution solution and interfering ions on the recovery of the analytes have been investigated. Under the optimized conditions, the adsorption capacity of modified nanometer-sized Al2O3 was found as 10.4, 16.3, 15.3, and 17.4 mg g21 for Hg, Cu, Au and Pd, respectively. The limits of detection were as low as 0.066 and 0.49 ng L21 for Cu and Hg with a concentration factor of 100 times, and 0.46 and 0.26 ng L21 for Au and Pd with a concentration factor of 200 times. The developed method has been applied to the determination of trace Hg and Cu in biological and environmental certified materials and Au and Pd in geological certified materials, and the determined values were in a good agreement with the certified values.
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胡斌, Lei Wang, Bin Hu, *, Shengqing Li and Zucheng Jiang
J. Anal. At. Spectrom., 2001, 16, 847-851,-0001,():
-1年11月30日
An in-situ electrothermal fluorination-assisted matrix removal method was developed with PTFE as chemical modifier, and trace-levels of Cr, Co and V in ZrO2 powder were determined. The solid samples were directly introduced into the graphite furnace in the form of a slurry, where the Zr matrix reacted with the active carbon fluoride formed by electrothermal decomposition of PTFE during the pyrolysis stage. Without loss of analytes, the Zr matrix was completely vaporized and removed by the carrier gas. As a result, the matrix interference, which was serious without the modifier, was effectively suppressed, and the chemical attack of the excess of the Zr matrix on the graphite tube was also minimized. The standard additions calibration and the aqueous standard calibration were compared and similar results were obtained. The removal of matrix, the background absorption, the chemical modification of PTFE and the temperature-time program of the graphite furnace were investigated and optimized. The proposed method was applied to the direct determination of trace amounts of Cr, Co and V in ZrO2 powder with aqueous calibration and the results obtained were in good agreement with those obtained by pneumatic nebulization ICP-AES after digestion and separation of the matrix Zr with PMBP extraction. The detection limits of Cr, Co and V were 0.20, 0.32 and 3.7mg g21, respectively.
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胡斌, Pei Liang, Bin Hu, *, Zucheng Jiang, Yongchao Qin and Tianyou Peng
J. Anal. At. Spectrom., 2001, 16, 863-866,-0001,():
-1年11月30日
A new method using a micro-column packed with nanometer sized TiO2 as a sorbent has been developed for the on-line preconcentration of trace amounts of rare earth elements (La, Y, Yb, Eu and Dy) prior to their determination by inductively coupled plasma atomic emission spectrometry (ICP-AES). The effects of pH, sample flow rate and volume, elution solution and interfering ions on the separation of analytes have been investigated. The adsorption capacity of nanometer TiO2 for La, Y, Yb, Eu and Dy was found to be 7.0, 6.1, 9.8, 8.3 and 8.8 mg g21, respectively. The method has been successfully applied for the determination of trace rare earth elements in some environmental samples.
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胡斌, Zhefeng Fan, Bin Hu*, Zucheng Jiang
Spectrochimica Acta Part B 60 (2005) 65-71,-0001,():
-1年11月30日
A sensitive and simple method for low temperature electrothermal vaporization inductively coupled plasma optical emission spectrometry (ETV-ICP-OES) determination of V (Ⅳ) and V (Ⅴ) after separation/preconcentration by a micro-column packed with immobilized thenoyltrifluoroacetone (TTA) on microcrystalline naphthalene has been developed. Thenoyltrifluoroacetone was used as both a chelating agent for micro-column separation/preconcentration and a chemical modifier for ETV-ICP-OES determination of vanadium. Both vanadium species could be trapped by micro-column at pH 4.0, and the vanadate (VO2+) ion could be collected selectively at pH 2.4. Solid material loaded with analyte in the micro-column was dissolved with 100 AL of acetone containing 2.0 mmol L1 TTA and the vanadium was determined subsequently by ETV-ICP-OES. The concentration of vanadyl (VO2+) ion was calculated by subtracting the vanadate concentration from the total concentration of vanadium. Under the optimized experimental conditions, the detection limit (3r) for the preconcentration of 5mL of aqueous solution is 0.068 Ag L1 for both species and the relative standard deviations were 4.3% for vanadium (Ⅴ) and 4.8% for vanadium (Ⅵ) (c=10 Ag L1, n=7), respectively. The method was applied successfully to the determination of vanadium (Ⅳ) and vanadium (Ⅴ) in natural water samples.
Vanadium speciation, Microcrystalline naphthalene, Thenoyltrifluoroacetone, ETV-ICP-OES
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胡斌, Man He, Bin Hu*, Zucheng Jiang
Analytica Chimica Acta 530 (2005) 105-112,-0001,():
-1年11月30日
A method of electrothermal vaporization inductively coupled plasma mass spectrometry (ETV-ICP-MS) for the determination of trace lanthanides and yttrium in soil samples with a polytetrafluorethylene (PTFE) emulsion as chemical modifier to promote the vaporization of the analytes from the graphite furnace was developed in this paper. The analytical characteristics, spectral interference and matrix effect of the analytical method were evaluated and critically compared with those of pneumatic nebulization inductively coupled plasma mass spectrometry (PN-ICP-MS). Under the optimized operation conditions, the relative detection limits of lanthanides (La-Lu) and yttrium for ETV-ICP-MS and PN-ICP-MS were 0.4-20ngl−1 and 1.0-21ngl−1, respectively, the absolute detection limits for ETV-ICP-MS were 4-200 fg, which were improved by 1-2 orders of magnitude compared with PN-ICP-MS. While the analytical precision of ETV-ICP-MS is worse than that of PN-ICP-MS, with the R. S. D. S (%) of 4.1-10% for the former and 2.9-7.8% for the latter. Regarding to the matrix effect, both conventional method and stepwise dilution method were employed to observe the effect of matrix and the very similar results were obtained. It was found that the highest tolerance concentration of the matrix is 1000mgl−1 and 800mgl−1 for ETV-ICP-MS and PN-ICP-MS, respectively. To assess the accuracy, the proposed method was applied to the determination of trace lanthanides and yttrium in three different soil standard reference materials and one soil sample, and the determined values are in good agreement with the certified values or reference values.
ETV-ICP-MS, Lanthanides, Yttrium, Soil, Matrix effect, Polytetrafluorethylene
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胡斌, Shuai Qin, Hu Bin, *, Qin Yongchao, Ruth Wanjau and Jiang Zucheng
J. Anal. At. Spectrom., 2000, 15, 1413-1416,-0001,():
-1年11月30日
A method is proposed to determine trace rare earth impurities in high-purity CeO2 by HPLC combined with electrothermal vaporization inductively coupled plasma atomic emission spectrometry (ETV-ICP-AES). The chromatographic retention behaviours of the matrix (Ce) and rare earth impurities were studied using 2-ethylhexyl hydrogen 2-ethylhexylphosphonate (P507) resin as the stationary phase and dilute nitric acid as the mobile phase. It was found that the matrix (Ce) can be separated quantitatively with dilute nitric acid as the mobile phase, and the rare earth impurities (Pr
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胡斌, Yingliang Wu, Bin Hu, * Zucheng Jiang and Shizhong Chen
J. Anal. At. Spectrom., 2002, 17, 121-124,-0001,():
-1年11月30日
A low temperature electrothermal vaporization inductively coupled plasma atomic emission spectrometry (ETV-ICP-AES) method for the determination of palladium, by using sample introduction of gaseous palladium oxinate, was developed. The thermally stable palladium oxinate was formed and vaporized at a temperature of 900℃ from the graphite furnace. The main factors affecting the vaporization behavior of the analyte were investigated in detail. The detection limit of palladium for this method was 50pg, and the relative standard deviation (RSD) for 0.2μgml-1 palladium was 4.7% (n=8). Compared with conventional ETV-ICPAES, the analytical sensitivity of this method was improved by one order of magnitude. The proposed method was applied to the determination of trace palladium in geological samples with satisfactory results.
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