A Wireless magnetoelastic sensor for urinary 2-naphthol detection based on the precipitation of 2-naphthol with diazonium salts
作者：
Yuan, Yu-Kun;Wang, Yong-Sheng*;Xiao, Xi-Lin;Xue, Jin-Hua;Li, Gui-Rong;...
期刊：
Analytical Sciences,2011年27(5):517-521 ISSN：0910-6340
通讯作者：
Wang, Yong-Sheng
作者机构：
[Yuan, Yu-Kun; Shi, Lin-Fei; Kang, Rong-Hui; Li, Gui-Rong; Zhang, Jin-Quan; Xue, Jin-Hua; Wang, Yong-Sheng] Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.;[Yuan, Yu-Kun] Chenzhou Fourth Peoples Hosp, Clin Lab, Chenzhou 423000, Peoples R China.;[Xiao, Xi-Lin] Univ S China, Coll Chem & Chem Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Wang, Yong-Sheng] U;Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.
摘要：
A wireless magnetoelastic sensor has been developed for the determination of 2-naphthol (2-NAP) in human urine. This method is based on the precipitation of 2-NAP with diazonium salts produced by the diazo-reaction of sulfamethoxazole (SMZ) with nitrite under a weak alkaline condition, resulting in a descending of the resonance frequency of a wireless magnetoelastic sensor. The frequence shift values (ΔF) of the sensor were directly proportional to the concentration in the range of 1.13 - 139 μmol L -1 for 2-NAP with a correlation coefficient of 0.997 and a detection limit of 0.340 μmol L -1 . The relative standard deviations were 2.38, 2.40 and 2.44%, and the average recovery was 107% (n = 6). The proposed method has additional advantages of being less time-consuming, low cost and remote query, and can be applied for realtime and in situ monitoring of 2-NAP in human urine. It would be a benefit to extend the scope of applications of magnetoelastic sensing techniques. 2011 © The Japan Society for Analytical Chemistry.
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英文
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Simultaneous determination of norfloxacin and lomefloxacin in milk by first derivative synchronous fluorescence spectrometry using Al (III) as an enhancer
作者：
Yi, Yan-Ni;Li, Gui-Rong*;Wang, Yong-Sheng;Zhou, Yu-Zhen;Zhu, Hui-Min
期刊：
Analytica Chimica Acta,2011年707(1-2):128-134 ISSN：0003-2670
通讯作者：
Li, Gui-Rong
作者机构：
[Zhou, Yu-Zhen; Yi, Yan-Ni; Li, Gui-Rong; Zhu, Hui-Min; Wang, Yong-Sheng] Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.
通讯机构：
[Li, Gui-Rong] U;Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.
关键词：
First derivative spectrum;Lomefloxacin;Norfloxacin;Synchronous fluorimetry;Zero-crossing
摘要：
A novel method for the simultaneous determination of norfloxacin (NFLX) and lomefloxacin (LFLX) in milk samples was developed by using first derivative synchronous fluorimetry. The synchronous fluorescence (Δλ=160nm) spectra and first derivative synchronous fluorescence spectra of NFLX, LFLX and their mixture were studied. The zero-crossing method was utilized to measure the first derivative value of the derivative spectrum. The zero-crossing points were located at 275.0nm for NFLX and at 283.8nm for LFLX, in first derivative synchronous fluorescence spectra. Therefore, 283.8nm and 275.0nm were selected for the determination of NFLX and LFLX. The first derivative values varied linearly with the concentrations in the range of 1.68×10 -8-5.64×10 -6molL -1 for NFLX and 1.89×10 -8-6.19×10 -6molL -1 for LFLX. The detection limits were 5.03×10 -9molL -1 for NFLX and 7.58×10 -9molL -1 for LFLX. The proposed method is reliable, selective and sensitive, and has been used successfully in the simultaneous determination of NFLX and LFLX in milk samples, whose results were in good agreement with those obtained by HPLC. © 2011 Elsevier B.V.
语种：
英文
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Determination of trace formaldehyde in blood plasma by resonance fluorescence technology
作者：
Wang, Yong-Sheng*;Tan, Xuan;Xue, Jin-Hua;Li, Gui-Rong;Shi, Lin-Fei;...
期刊：
Analytica Chimica Acta,2011年690(2):234-239 ISSN：0003-2670
通讯作者：
Wang, Yong-Sheng
作者机构：
[Zhou, Bin; Shi, Lin-Fei; Tan, Xuan; Li, Gui-Rong; Xue, Jin-Hua; Yang, Hong-Mei; Wang, Yong-Sheng; Liu, Lu] Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.;[Xiao, Xi-Lin] Univ S China, Coll Chem & Chem Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Wang, Yong-Sheng] U;Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.
关键词：
Blood plasma;Formaldehyde;Potassium bromate;Pyronine Y;Resonance fluorescence
摘要：
A novel method for the determination of trace formaldehyde in blood plasma has been established by using resonance fluorimetry technique. It was based on the fact that oxidation of pyronine Y by potassium bromate was catalyzed by formaldehyde in sulfuric acid. When the wavelength interval was at Δλ=0nm, it was found that the decreased intensity (ΔF) of resonance fluorescence at 574.6nm was proportional to the concentration of formaldehyde in the range of 1.27×10-2 to 2.28μgmL-1. The limit of detection and the average recovery for formaldehyde were 3.80ngmL-1 and 101.6% (n=6), respectively. The present method had been applied to the determination of trace formaldehyde in blood plasma, and the obtained results were in good agreement with those obtained by the resonance light scattering method. © 2011 Elsevier B.V.
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英文
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反相高效液相色谱法测定尿中α-萘酚,β-萘酚,对硝基酚和间硝基酚
作者：
黎俊宏;李贵荣;唐宏兵;徐晓怡;欧阳运富;...
期刊：
光谱实验室,2011年28(2):782-786 ISSN：1004-8138
作者机构：
[黎俊宏; 唐宏兵; 徐晓怡; 欧阳运富] 常州市疾病预防控制中心;[杨红梅] 常州市中心血站;[李贵荣; 王永生] 南华大学公共卫生学院
关键词：
反相高效液相色谱;萘酚;硝基酚;尿样
摘要：
利用反相高效液相色谱法建立了同时检测人尿样中的α-萘酚,β-萘酚,对硝基酚和间硝基酚的新方法.采用DiamonsilTMC18(150mm×4.6mm,5μm)色谱柱分离,以V(甲醇):V(乙酸铵缓冲液)=58:42为流动相,流速为0.75mL/min,柱温为35℃,于波长280nm处检测.当α-萘酚,β-萘酚,对硝基酚和间硝基酚的浓度分别在0.120--19.44,0.106--19.44,0.479--27.80μg/mL和0.439--27.80μg/mL范围内与峰面积呈良好线性关系,RSD分别为3.7%--4.3%,2.4%--3.6%,2.7%--4.9%和2.9%--3.6%(n=5).本法用于尿中4种物质的同时测定,回收率分别为98.8%,103.8%,97.5%和105.0%,结果满意
语种：
中文
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催化共振光散射法测定痕量锰（Ⅱ）
作者：
刘云富;李贵荣;谭广辉
期刊：
微量元素与健康研究,2011年28(2):44-47 ISSN：1005-5320
作者机构：
[谭广辉; 刘云富] 惠州市职业病防治院;南华大学公共卫生学院;[李贵荣] 南华大学
关键词：
催化共振光散射法;锰;铬天青S;溴化十六烷基三甲胺
摘要：
目的:建立快捷、灵敏检测锰(Ⅱ)的催化共振光散射新方法.方法:基于硫酸介质中,锰(Ⅱ)能催化溴酸钾氧化铬天青S(CAS)的反应.使其与溴化十六烷基三甲胺(CTMAB)缔合产生的共振光散射强度减弱,在一定条件下,共振光散射强度减小值与溶液中锰(Ⅱ)浓度成正比,据此建立了一种催化共振光散射分析法测定锰(Ⅱ)的新方法.结果:方法的线性范围为0.02～0.70μg/ml,检出限4.0μg/L,相对标准偏差为1.08～1.39%(n=11),样品加标回收率96.0%～102.7%.结论:方法灵敏度高、精密度好,用于水样、人发中痕量锰的测定,结果满意.
语种：
中文
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Highly sensitive inhibitory kinetics fluorescence method for determination of arsenic
作者：
Li, Guirong*;Liu, Yunfu
期刊：
International Journal of Environmental Analytical Chemistry,2011年91(9):866-875 ISSN：0306-7319
通讯作者：
Li, Guirong
作者机构：
[Liu, Yunfu; Li, Guirong] Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.
通讯机构：
[Li, Guirong] U;Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.
关键词：
Acridine red;Arsenic;Food products;Inhibitory kinetics fluorescence
摘要：
A new and highly sensitive inhibitory kinetic fluorescence method for the determination of arsenic (III) has been established based on its inhibitory effect on the oxidation reaction of Acridine red (ADR) by KBrO<inf>3</inf> in sulphuric acid medium. The reaction has been followed by measuring the enhancement of fluorescence at 550 nm. It relies on the linear relationship where the change in the fluorescence (ΔF) versus added As(III) amounts in the range of 0-0.450 μgmL<sup>-1</sup> is plotted, under the optimum conditions. The sensitivity of the proposed method, i.e. the limit of detection, is 2.1 ×10<sup>-2</sup> ngmL<sup>-1</sup>. The method is featured with good accuracy and reproducibility for arsenic (III) determination. This method was successfully applied for the quantitative determination of arsenic (III) in food products samples, and the relative standard deviations and the recoveries were in ranges of 2.31-2.83% and 90.0-107.2%, respectively. A review of recently published catalytic or inhibiting kinetic methods for the determination of arsenic (III) has also been presented for comparison. The mechanism of reaction was studied. ©2011 Taylor &Francis.
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英文
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罗丹明G-动力学共振荧光法测定水溶液中的痕量亚硝酸根
作者：
易艳妮;李贵荣;王永生;周玉珍;朱慧敏;...
期刊：
应用化工,2011年40(2):355-359 ISSN：1671-3206
作者机构：
[易艳妮; 李贵荣; 王永生; 周玉珍; 朱慧敏; 梁娜] 南华大学公共卫生学院
关键词：
催化共振荧光;亚硝酸根;罗丹明G
摘要：
在盐酸介质中罗丹明G的分子共振荧光信号强,发射峰尖而对称,受干扰因素少.基于亚硝酸根能催化KBrO3氧化罗丹明G的反应,建立了催化动力学共振荧光分析法测定痕量NO2-.考察了体系荧光强度减弱值(ΔF)的影响因素,优化了反应条件.最大共振荧光峰位于540 nm波长处,NO2-的浓度在4.2056.0μg/L范围内与ΔF呈良好的线性关系,方法检出限为1.65μg/L.本方法用于环境水样中NO2-的测定,RSD<5.0%,样品加标回收率为98.84%104.33%
语种：
中文
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催化共振荧光法测定痕量甲醛
作者：
周玉珍;李贵荣;王永生;易艳妮;朱慧敏;...
期刊：
应用化工,2011年40(3):535-538,541 ISSN：1671-3206
作者机构：
[周玉珍; 李贵荣; 王永生; 易艳妮; 朱慧敏; 喻鑫] 南华大学公共卫生学院
关键词：
甲醛;荧光素;催化共振荧光
摘要：
在硫酸介质中,甲醛能催化溴酸钾氧化荧光素的反应,使其共振荧光强度减弱,据此建立了催化共振荧光动力学分析法测定甲醛的新方法。方法的线性范围为0.023 8～0.175μg/mL,检出限7.15×10-3μg/mL,RSD小于2.47%,样品加标回收率为96.5%～104.6%。该方法简便快速、干扰小,用于室内空气和环境水样中甲醛的测定,结果满意。
语种：
中文
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催化分光光度法测定痕量苯酚
作者：
谭广辉;李贵荣;周谨
期刊：
中国卫生检验杂志,2010年20(1):63-64 ISSN：1004-8685
作者机构：
广东省惠州市职业病防治院,广东,惠州,516008;湖南省南华大学公共卫生学院,湖南,衡阳,421001
关键词：
催化分光光度法;苯酚;茜素红
摘要：
目的：建立测定痕量苯酚的新方法。方法：基于硫酸介质中,苯酚能催化溴酸钾氧化茜素红的褪色反应,建立了催化分光光度法测定痕量苯酚的新方法。结果：方法的线性范围为0.08-1.20μg/m l,检出限0.046μg/m l。RSD为1.92%、2.24%,样品加标回收率为97.5%-104.0%。结论：该方法简便快速,常见物质干扰小,用于环境水样痕量苯酚的测定,结果满意。
语种：
中文
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砷(Ⅴ)—钼酸铵—碘绿的共振瑞利散射光谱及其应用研究
作者：
刘云富;李贵荣;谭广辉
期刊：
广东微量元素科学,2010年17(9):60-65 ISSN：1006-446X
作者机构：
[谭广辉; 刘云富] 惠州市职业病防治院;南华大学公共卫生学院;[李贵荣] 南华大学
关键词：
共振瑞利散射法;砷;钼酸铵;碘绿
摘要：
研究了砷(Ⅴ)-钼酸铵-碘绿体系的共振瑞利散射光谱特性.在硫酸介质中,砷(Ⅴ)与钼酸反应生成砷钼杂多酸大阴离子,其与阳离子染料碘绿结合形成离子缔合配合物,导致体系共振瑞利散射光剧烈增强,据此建立了共振瑞利散射分析法测定砷(Ⅴ)的新方法.方法的线性范围为0.01～0.40 μg/mL,检出限1.5 μg/L.RSD为2.55%、1.86%,样品加标回收率为95.5%～104.3%.该法简便快速,用于测定化妆品中微量砷,结果满意.
语种：
中文
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Quartz crystal microbalance with β-cyclodextrin/TiO2 composite films coupled with chemometrics for the simultaneous determination of urinary 1- and 2-naphthol
作者：
Yuan, Yu-Kun;Xiao, Xi-Lin;Wang, Yong-Sheng*;Xue, Jin-Hua;Li, Gui-Rong;...
期刊：
Sensors and Actuators B-Chemical,2010年145(1):348-354 ISSN：0925-4005
通讯作者：
Wang, Yong-Sheng
作者机构：
[Yuan, Yu-Kun; Shi, Lin-Fei; Kang, Rong-Hui; Li, Gui-Rong; Zhang, Jin-Quan; Xue, Jin-Hua; Wang, Yong-Sheng] Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.;[Xiao, Xi-Lin] Univ S China, Coll Chem & Chem Engn, Hengyang 421001, Peoples R China.;[Wang, Yong-Sheng] Univ S China, Coll Publ Hlth, W Changsheng Rd 28, Hengyang 421001, Peoples R China.
通讯机构：
[Wang, Yong-Sheng] U;Univ S China, Coll Publ Hlth, W Changsheng Rd 28, Hengyang 421001, Peoples R China.
关键词：
Naphthol;beta-Cyclodextrin;TiO2;Quartz crystal microbalance;Chemometrics
摘要：
A novel sensitive method was presented for the simultaneous determination of 1-naphthol (1-NAP) and 2-naphthol (2-NAP) in human urine samples. This method is based on the combination of the high sensitivity of quartz crystal microbalance (QCM) and excellent predictive ability of chemometrics. Nanocrystalline TiO<inf>2</inf> films were used as substrates for immobilizing β-cyclodextrin (β-CD) onto the QCM surface. The sensing layer consisting of β-CD and nanocrystalline TiO<inf>2</inf> particles was characterized by X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TG) and IR spectroscopy. In the Britton-Robinson (B-R) buffer solution of pH 6.37, frequency shift (ΔF) of the QCM was directly proportional to the concentration of 1-NAP and 2-NAP as 1.0 ×10<sup>-6</sup> to 1.3 ×10<sup>-4</sup> mol L<sup>-1</sup>, and 1.0 ×10<sup>-6</sup> to 1.2 ×10<sup>-4</sup> mol L<sup>-1</sup>, respectively. The correlation coefficients were 0.993 for 1-NAP, and 0.990 for 2-NAP. The limits of detection (LOD) were found to be 8.362 ×10<sup>-7</sup> mol L<sup>-1</sup> for 1-NAP and 2.146 ×10<sup>-7</sup> mol L<sup>-1</sup> for 2-NAP. The proposed method has been successfully applied for detecting 1-NAP and 2-NAP in human urine with a satisfactory result. The QCM with β-CD/TiO<inf>2</inf> composite films coupled with chemometrics can lead to significant improvements in the sensor performance, and would be benefit to extend the scope of application of QCM and chemometrics. ©2009 Elsevier B.V. All rights reserved.
语种：
英文
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卫生检验专业创新性应用型人才培养模式的探索与实践
作者：
王永生;李贵荣
期刊：
中国卫生检验杂志,2010年20(4):914-915 ISSN：1004-8685
作者机构：
南华大学公共卫生学院,湖南衡阳,421001
关键词：
卫生检验专业;人才培养模式;专业教育;素质教育;创业教育
摘要：
创新人才培养模式,既是培养具有创新精神和创新能力的创新性人才的现实需要,也是当前高等教育改革的一项重要内容.南华大学积极探索卫生检验专业人才培养模式的改革和创新,构建了"专业教育、素质教育和创业教育'三位一体'的创新性应用型"人才培养新模式,人才培养质量不断提高,近年来,先后获得省级、国家级大学生课外学术科技作品竞赛和全国大学生创业计划设计大赛等多项奖励,学生一次性就业率一直保持在98%以上,赢得了良好的社会声誉.
语种：
中文
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Study on the enhanced fluorescent spectrum of ciprofloxacin + Al(III) + La(III) + cetyltrimethylammonium bromide system and its application
作者：
Wei, Leilei;Li, Guirong*;Li, Haipeng
期刊：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2010年75(5):1486-1491 ISSN：1386-1425
通讯作者：
Li, Guirong
作者机构：
[Wei, Leilei; Li, Haipeng; Li, Guirong] Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.
通讯机构：
[Li, Guirong] U;Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.
关键词：
Ciprofloxacin;Aluminum;Lanthanum;Fluorescence method;Co-luminescence
摘要：
The fluorescence of ciprofloxacin (CIP) in HAc-NaAc buffer solution and the presence of cetyltrimethylammonium bromide (CTMAB) enhanced visibly with adding Al(III) and La(III). This enhanced fluorescence spectra were studied, and a new co-luminescence system of CIP + Al(III) + La(III) + CTMAB was discovered. There was a linear relationship between the enhanced fluorescence intensity and the concentration of CIP in the range of 0.50-80.2 μg l<sup>-1</sup> under the optimized condition. A novel enhanced fluorescence method for the determination of trace CIP was established by using this co-luminescence system. The detection limit of the proposed method was 0.17 μg l<sup>-1</sup> for CIP. This method is simple, rapid and sensitive. The CIP in milk samples were analyzed by the proposed method with satisfactory results. The relative standard deviation and the recovery were in ranges of 3.21-4.34% and 97.1-100.1%, respectively. The mechanism of the co-luminescence reaction and the reasons for fluorescence enhancement has been discussed. ©2010 Elsevier B.V. All rights reserved.
语种：
英文
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吡口罗红Y-共振荧光光谱法测定痕量甲醛
作者：
谭广辉;李贵荣;周谨
期刊：
光谱实验室,2010年27(4):1436-1439 ISSN：1004-8138
作者机构：
[谭广辉; 周谨] 惠州市职业病防治院;[李贵荣] 南华大学公共卫生学院
关键词：
共振荧光;吡口罗红Y;甲醛
摘要：
研究了吡口罗红Y的共振荧光光谱特征,基于硫酸介质中甲醛能催化溴酸钾氧化吡口罗红Y的反应,使其共振荧光强度减弱. 据此建立了催化共振荧光分析法测定甲醛的新方法. 方法的线性范围为 0.02--1.20μg/mL,检出限为6.1×10~(-3)μg/mL. 样品加标回收率为96.5%--98.5%. 新建方法简便快速,可用于环境水样中甲醛的测定
语种：
中文
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Rapid simultaneous analysis of 1-hydroxypyrene, 2-hydroxyfluorene, 9-hydroxyphenanthrene, 1- and 2-naphthol in urine by first derivative synchronous fluorescence spectrometry using Tween-20 as a sensitizer
作者：
Kang, Rong-Hui;Wang, Yong-Sheng*;Yang, Hong-Mei;Li, Gui-Rong;Tan, Man;...
期刊：
Analytica Chimica Acta,2010年658(2):180-186 ISSN：0003-2670
通讯作者：
Wang, Yong-Sheng
作者机构：
[Yuan, Yu-Kun; Tan, Man; Shi, Lin-Fei; Kang, Rong-Hui; Li, Gui-Rong; Zhang, Jin-Quan; Yang, Hong-Mei; Xue, Jin-Hua; Wang, Yong-Sheng] Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.;[Xiao, Xi-Lin] Univ S China, Coll Chem & Chem Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Wang, Yong-Sheng] U;Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.
关键词：
Derivative synchronous fluorescence;Polycyclic aromatic hydrocarbons;Tween-20;Urine
摘要：
A novel method of first derivative synchronous fluorescence was developed for the rapid simultaneous analysis of trace 1-hydroxypyrene (1-OHP), 1-naphthol (1-NAP), 2-naphthol (2-NAP), 9-hydroxyphenanthrene (9-OHPe) and 2-hydroxyfluorene (2-OHFlu) in human urine. Only one single scan was needed for quantitative determination of five compounds simultaneously when Δλ = 10 nm was chosen. In the optimal experimental conditions, there was a linear relationship between the fluorescence intensity and the concentration of 1-OHP, 1-NAP, 2-NAP, 9-OHPe and 2-OHFlu in the range of 1.75 × 10-9 to 4.50 × 10-6 mol L-1, 3.64 × 10-8 to 2.20 × 10-4 mol L-1, 8.18 × 10-9 to 1.20 × 10-4 mol L-1, 3.26 × 10-9 to 8.50 × 10-5 mol L-1 and 4.88 × 10-9 to 5.50 × 10-6 mol L-1, respectively. The limits of detection (LOD) were found to be 5.25 × 10-10 mol L-1 for 1-OHP, 1.10 × 10-8 mol L-1 for 1-NAP, 2.46 × 10-9 mol L-1 for 2-NAP, 9.77 × 10-10 mol L-1 for 9-OHPe and 1.46 × 10-9 mol L-1 for 2-OHFlu. The proposed method is reliable, selective and sensitive, and has been used successfully in the determination of traces of 1-OHP, 1-NAP, 2-NAP, 9-OHPe and 2-OHFlu in human urine samples, whose results were in good agreement with those gained by the HPLC method. © 2009 Elsevier B.V. All rights reserved.
语种：
英文
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诺氟沙星-Bi(Ⅲ)-KI体系的共振瑞利散射法测定牛奶中诺氟沙星残留量的方法
作者：
魏雷雷;李贵荣;李海鹏;黎俊宏;朱慧敏
期刊：
应用化工,2010年39(1):127-129,146 ISSN：1671-3206
作者机构：
[魏雷雷; 李贵荣; 李海鹏; 黎俊宏; 朱慧敏] 南华大学,公共卫生学院
关键词：
共振瑞利散射;诺氟沙星;牛奶
摘要：
在HCl介质中,Bi(Ⅲ)与I~- 可形成[BiI4]- 络合负离子,与质子化的诺氟沙星(NRF)缔合,形成离子缔合物,使共振瑞利散射(RRS)显著增强,并且最大RRS峰位于469 nm处.在优化的实验条件下,RRS强度增大值(ΔI)与NRF浓度成正比,线性范围和检出限分别为3.2～130 μg/L和 0.96 μg/L,方法简单,灵敏度高,用于牛奶样品中NRF测定,结果满意.
语种：
中文
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A catalytic resonance fluorometry method for determination of hydroquinone and its applications
作者：
Li, Guirong*;Tan, Guanghui;Liu, Yunfu;Wang, Yongsheng;Liao, Lifu
期刊：
Analytical Sciences,2009年25(4):493-497 ISSN：0910-6340
通讯作者：
Li, Guirong
作者机构：
[Wang, Yongsheng; Tan, Guanghui; Liu, Yunfu; Li, Guirong] Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.;[Liao, Lifu] Univ S China, Coll Chem & Chem Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Li, Guirong] U;Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.
摘要：
Pyronin Y (PY) has a strong resonance fluorescence in sulfuric acid medium. The characteristics of the resonance fluorescence spectra and the factors affecting the spectra were studied. A catalytic resonance fluorometry method for the determination of hydroquinone was proposed based on the catalytic effect of hydroquinone on the oxidation of PY by potassium bromate. The oxidation of PY resulted in the decrease of the resonance fluorescence intensity. The influences of several variables on the sensitivity were studied. At the optimized conditions, the decrease of the resonance fluorescence intensity was in proportion to the concentration of hydroquinone in the range of 4.42 - 1.60 × 103 μg l-1, and the detection limit was 1.46 μg l-1. The proposed method was applied successfully for the determination of trace hydroquinone in environment samples. The relative standard deviation was less than 3.90% and the recoveries were in the range of 95.2 - 104.0%. 2009 © The Japan Society for Analytical Chemistry.
语种：
英文
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Determination of arsenic in hair by resonance Rayleigh scattering method with iodine green-molybdate system
作者：
Li, Guirong*;Liu, Yunfu;Wang, Yongsheng
期刊：
Analytical Letters,2009年42(1):94-107 ISSN：0003-2719
通讯作者：
Li, Guirong
作者机构：
[Wang, Yongsheng; Liu, Yunfu; Li, Guirong] Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.
通讯机构：
[Li, Guirong] U;Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.
关键词：
Arsenic;Hair samples;Iodine green;Resonance Rayleigh scattering
摘要：
A simple and fast resonance Rayleigh scattering (RRS) method for the determination of arsenic was developed. The method is based on the formation of ion-association complexes {(IG)3·[As2(Mo2O7)12]H5}m of iodine green (IG) and heteropoly acid anion [As2(Mo2O7)12]14- formed as As (V) reacts with molybdate in H2SO4 solution. The ion-association complexes can lead to distinct enhancement of RRS. The enhanced RRS intensity is proportional to the concentration of As (V) in the range of 0.008-0.40 μg ml-1. The optimum conditions, the influence factors for the reaction, and the effects of coexisting substances have been investigated. The method has high sensitivity and good selectivity; the detection limit for As (V) (3 S0/S) is 1.50 ng ml-1. The method can be applied to the determination of As (V) in hair samples. Furthermore, the mechanism of the reaction and the reasons for RRS enhancement is discussed. Copyright © Taylor & Francis Group, LLC.
语种：
英文
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结晶紫共振光散射法测定水样中痕量过氧化氢
作者：
李海鹏;李贵荣;魏雷雷;谢爱萍;黄翔丹
期刊：
南华大学学报(自然科学版),2009年23(4):88-91 ISSN：1673-0062
作者机构：
南华大学,公共卫生学院,湖南,衡阳,421001;[李海鹏; 魏雷雷; 李贵荣; 谢爱萍; 黄翔丹] 南华大学
关键词：
结晶紫;共振光散射;过氧化氢;缔合物
摘要：
在pH 5.2 Hac-NaAc缓冲溶液和PVA存在的条件下,H2O2 在Fe2+的催化作用下产生的羟自由基·OH,·OH氧化I-并生成的 I-3,而I-3又与带正电荷的结晶紫形成缔合物微粒,导致体系溶液共振光散射明显增强.在546.8 nm处,共振光强度的改变值ΔI溶液中H2O2的含量在0.017～0.714 μg/mL范围内呈良好的线性关系,据此建立了一种共振光散射法检测H2O2,方法检出限5.10×10-3 μg/mL H2O2,相对标准偏差为3.1%～3.5%,该方法用于水样的测定,加标回收率为96.1%～102%,结果满意.
语种：
中文
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The molecular resonance fluorescence method for determination of arsenic in hair samples
作者：
Li, Guirong*;Liu, Yunfu;Wang, Yongsheng;Liao, Lifu
期刊：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2009年72(4):811-815 ISSN：1386-1425
通讯作者：
Li, Guirong
作者机构：
[Wang, Yongsheng; Liu, Yunfu; Li, Guirong] Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.;[Liao, Lifu] Univ S China, Coll Chem & Chem Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Li, Guirong] U;Univ S China, Coll Publ Hlth, Hengyang 421001, Peoples R China.
关键词：
Molecular resonance fluorescence;Arsenic;Rhodamine B;Hair samples
摘要：
A molecular resonance fluorescence quenching method for the determination of arsenic was proposed. The method is based on the quenching effect of As (V) on the molecular resonance fluorescence of Rhodamine B (RhB) in sulfuric acid medium and in the presence of molybdate and PVA. The influences of acidity, chemical and manifold variables on the sensitivity were studied. At the optimized conditions, the linear range for the determination of arsenic was 2.0 ×10<sup>-3</sup>-0.12 μg ml<sup>-1</sup> with the detection limit of 1.20 ×10<sup>-9</sup> g ml<sup>-1</sup>. The relative standard deviations for the eleven replicate determinations of 0.006 μg ml<sup>-1</sup> and 0.060 μg ml<sup>-1</sup> of arsenic were 1.12% and 1.61%, respectively. The proposed method was applied successfully for the determination of trace arsenic in hair samples with the recoveries of 94.8-104.6%. ©2008 Elsevier B.V. All rights reserved.
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英文
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