曹秋娥
(1)分子印迹聚合物的合成及应用研究;(2)中药活性成分的毛细管电泳研究;(3)生物大分子的分析及其互相作用研究。
个性化签名
- 姓名:曹秋娥
- 目前身份:
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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:(1)分子印迹聚合物的合成及应用研究;(2)中药活性成分的毛细管电泳研究;(3)生物大分子的分析及其互相作用研究。
曹秋娥,女,1967年9月生,湖南人。1990年毕业于西南师范大学化学系,获学士学位,1993年毕业于云南大学化学系分析化学专业,获硕士学位。同年留校任教,其间于1996年9月赴兰州大学化学系分析化学专业攻读博士研究生,1999年6月毕业并获博士学位。现为云南大学化学系主任,教授,硕士研究生导师,云南省高等学校教学科研带头人,《大学化学》编委。研究方向:(1)分子印迹聚合物的合成及应用研究;(2)中药活性成分的毛细管电泳研究;(3)生物大分子的分析及其互相作用研究。现主持或参与的课题:(1)新型分子识别分离富集材料的研制及应用(主持,云南省自然科学基金,编号为2003B0004M);(2)天然活性物质的识别分离和富集的基础研究及应用(参与,国家自然科学基金项目,编号为30260014)。
获奖情况:课题“光谱探针试剂的合成及其在分子光谱中的应用研究”获2001年云南省科学技术奖(自然科学类)三等奖(本人排名第一)。课题“钪钍锇碲铜杂多络合物新显色反应的研究”获1999年度云南省教委科技进步奖二等奖(排名第三)。2003年获得云南大学“伍达观优秀教师奖”优秀奖。
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曹秋娥, Yunkun Zhao a, Qiu-E Cao a, Zhide Hua, *, Qiheng Xu b
Analytica Chimica Acta 388(1999)45-50,-0001,():
-1年11月30日
A new triazene group reagent m-nitrophenylazo-2-aminothiazole (m-NPAAT) was first synthesized and characterized by elemental analysis, and 1H-NMR and IR spectra. This new reagent reacts with Ag (I) in a slightly basic medium to form an 1:1 complex, which exhibits intensive resonance-enhanced Rayleigh light-scattering (RLS) in the presence of Tween-20. A new method for the determination of Ag (I) by RLS based on this reaction is proposed. The intensity of the RLS at 456nm is proportional to silver (I) concentration in the range of 1.0-700μg l-1 with a detection limit of 0.5μg 1-1. Expect for I-, SCN-and PdII, no other ions interfere in the determination at 5-1000times the concentration of Ag (I). The method is thus sensitive and of good selectivity, and has been used for the determination of trace impurity silver in an anti-cancer drug and in chemical samples and for the measurement of the solubility product of silver chloride. 1999 Elsevier Science B.V. All rights reserved.
Triazene reagent, RLS, Tween-20
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曹秋娥, Cao Qiu-e a, Zhao Yunkun a, Cheng Xingguo a, Hu Zhide a, *, Xu Qiheng b
Food Chemistry 65(1999)405-409,-0001,():
-1年11月30日
Copper (Ⅱ) can react with a new fluorescence reagent, 5-(4-chlorophenylazo)-8-aminoquinoline (APAQCL), forming a fluorescence product only in slightly acidic medium, while the fluorescence product of cobalt (Ⅱ) with APAQCL forms only in basic medium and in the presence of H2O2. Based on the dierence of the reaction between cobalt (Ⅱ) and copper (Ⅱ) with APAQCL, a new flow injection method for the sequential determination of cobalt and copper in binary mixtures by use of a fluorimetric detector and APAQCL as reagent was proposed. Linear calibration graphs were obtained over the concentration range 0.010-1.20 (μg/ml) of cobalt (Ⅱ) and 0.050-5.00 (μg/ml) of copper (Ⅱ) with the detection limit of 0.0030 (μg/ml) of cobalt (Ⅱ) and 0.010 (μg/ml) of copper (Ⅱ), respectively. The applicability of the method to the sequential determination of cobalt (Ⅱ) and copper (Ⅱ) in food samples was demonstrated by investigating the potential interference and by the analysis of synthetic mixtures of copper (Ⅱ) and cobalt (Ⅱ). The method was successfully applied to the determination of copper and cobalt in food samples. #1999 Elsevier Science Ltd. All rights reserved.
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曹秋娥, Qiu-E. Cao a, Yunkun Zhao b, Xiaojun Yao b, Zhide Hu b, *, Qiheng Xu a
Spectrochimica Acta Part A 56(2000)1319-1327,-0001,():
-1年11月30日
The resonance Rayleigh light-scattering (RRLS) signal of a new triazene reagent; 1-(o-nitrophenyl)-3-(2-thiazolyl) triazene (o-NPTT), was firstly synthesized and characterized in this paper at 500-600nm wavelength range and can be enhanced remarkably by Pd2+. According to this phenomenon, a new method was developed for the determination of Pd2+ by the RRLS technique in the presence of Tween-80. The calibration graph showed good linearity over a concentration range of 5.0-700μg 1-1 with a detection limit of 1.0μg 1-1. There are almost no foreign ions interfered in the determination at a more than fivefold concentration of Pd2+. The method is relatively sensitive, of good selectivity and has been successfully used for the determination of trace palladium in the slag of fertilizer factories and catalyst samples.
Triazene reagents, Tween-80
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曹秋娥, Qiu-E Cao, , Yunkun Zhao, Xiaojun Yao, Zhide Hu, * and Qiheng Xu
ANALYTICAL LETTERS, 34 (5), 773-784(2001),-0001,():
-1年11月30日
The resonance Rayleigh light-scattering (RRLS) signal of a new triazene reagent, 1-(p-chlorophenyl)-3-(2-thiazolyl) triazene (p-ClPTT), is first synthesized and characterized in this paper, in the 450-550nm wave length range is enhanced remarkably by Au3+. A new method for the determination of Au3+ by the RRLS technique in the presence of Tween-20 has been developed. The calibration graph shows good linearity over a concentration range of 5.0-800 μg/l with a detection limit of 3.0μg/l. Except for IO4-, SCN-and Pd2+, no other foreign ions interfere in the determination at concentrationsless than 10-fold of Au3+. The method is thus simple, sensitive and of good selectivity, and has been successfully used for the determination of trace gold in the ore samples.
Gold (, Ⅲ), , Resonance Rayleigh light-scattering, Triazene reagents.,
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曹秋娥, Qiu-E Cao a, Ketai Wang a, Zhide Hu a, *, Qiheng Xu b
Talanta 47(1998)921-927,-0001,():
-1年11月30日
Three new 8-aminoquinoline-5-azo derivatives: 5-(3-fluo-4-chlorophenylazo)-8-aminoquinoline (FCPAQ), 5-(3-fluo–4-chlorophenylazo)-8-benzenesulfonamidoquinoline (FCPBSQ), 4, 4'-bis (8-aminoquinoline-5-azo)-biphenyl (BAQABP) have been synthesized, and were found to be good fluorescence reagents for the determination of copper (II). In slightly acidic or basic medium, copper (II) reacts with FCPAQ, FCPBSQ or BAQABP to form a chelate, which exhibits an intensive fluorescence in ultraviolet region. The fluorescence intensity is proportional to the concentration of copper (II) over the range of 4.0-140, 1.0-200 and 3.0-150μg 1-1 with the detection limits of 0.80, 0.20 and 0.50μg 1-1 for the FCPAQ, FCPBSQ and BAQABP systems, respectively. The methods have been successfully applied to the determination of trace amount of copper in ore, alloy, water and hair samples.
8-Aminoquinoline derivatives, Copper, Spectrofluorimetry
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【期刊论文】Catalytic Spectrophotometric Determination of Osmium Based on Oxidation of Basic Dyes
曹秋娥, by Qiu-e Cao, Zubi Li*, Jialin Wang and Chongning Li
Chem. Anal. (Warsaw), 47, 701(2002),-0001,():
-1年11月30日
The catalytic effect of osmium on the oxidation reactions of three basic dyes: methylene blue (MB), butyl rhodamine B (BRB) and nile blue (NB), by KIO4 are investigated spectrophotometrically and applied for the kinetic determination of osmium (IV) in the acidic medium at 90±0.5℃. The above reactions are monitored spectrophotometrically by measuring the decrease in the absorbance at 660nm, 555nm and 600nm for the catalytic reactions of MB, BRB and NB, respectively. Under the optimum conditions, osmium (IV) can be determined at the concentration up to 3.2mg L-1 for MB method, 6.8mg L-1 for BRB method, and 10.0 μg L-1 for NB method with the respective detection limit of 0.020, 0.020 and 0.080μg L-1. The methods, which are of high sensitivity, good selectivity and stability, are free from most interference and have been successfully applied for the determination of trace amounts of osmium in some ore and catalyst samples. The kinetic parameters of the catalytic reaction were derived, and its mechanism was suggested.
osmium (, Ⅵ), ,, catalytic spectrophotometry,, periodate,, basic dye
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曹秋娥, Qiu-E Cao, *a, Zhongtao Ding, a, Ruibin Fang a and Xiao Zhao b
Analyst, 2001, 126, 1444-1448,-0001,():
-1年11月30日
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曹秋娥, Qiu-E Cao, *, Yunkun Zhao, †, Yunyuan Xu, ‡, Changzheng Li, Zhide Hu, †., and Qiheng Xu*
Analytical Biochemistry 277, 214-220(2000),-0001,():
-1年11月30日
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曹秋娥, Fei Li, Qiu-E Cao, Zhongtao Ding
CHROMATOGAPHCLA, 2004, 59, 753-757,-0001,():
-1年11月30日
A capillary zone electrophoresis method modified by β-CD was, for the first time, developed for the simultaneous determination of five anthraquinones (physcion, chrysophanol, aloeemodin, emodin and rhein) in rheum and rheum-containing preparations. The factors relevant to the run buffer media and their effects on the separation were studied. A buffer solution composed of 15mM sodium borate, 30mM β-CD, 20% acetonitrile and 1.0% ethanediol was found to be the most suitable electrolyte for separation, whereby the contents of the five anthraquinones in rheum and rheum-containing preparations could be easily determined in 20min at 20kV. The relative standard deviation for the determination of the five constituents in the samples varied form 0.16-5.47%, and the recovery ranged between 92.0 and 107.3%. Moreover the inclusion constants of the target compounds, except for rhein with β-CD, were also determined.
Capillary zone electrophoresis, Anthraquinones, Rheum Preparations, Inclusion constant
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曹秋娥, Cao Qiu-e a, Hu Zhide*a, Li Zubi b, Wang Jialin b and Xu Qiheng b
Analyst, April 1998, Vol. 123(695-697),-0001,():
-1年11月30日
Three highly sensitive spectrophotometric methods have been developed for the determination of tellurium (Ⅳ), based on its colour reactions with tungstate and basic dyes (BD) in aqueous solution in the presence of poly (vinyl alcohol). Tellurium (Ⅳ) reacts with tung state and BD to form ionassociation complexes. The molar absorptivities are between 1.76×107 and 3.33×107dm3 mo-1 cm-1, the highest value being found with Nile blue. Suitable conditions for the reactions and the effects of foreign ions were investigated. The methods have been successfully applied to the spectrophotometric determination of trace amounts of tellurium (Ⅳ) in smoke ash samples.
Tellurium (, Ⅳ), , spectrophotometry, tungstate-basic dyes-poly (, vinyl alcohol), system, Nile blue
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