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Chemiluminescence of luminol-potassium Ferricyanide with Benserazide and Application in Analytical Chemistry

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Chinese Chemical Letters 2006年第9期17卷 1233-1235页

作者： Jian Quan lu Wei Wei HE Xing Wang zhOU Hubei Key Laboratory of Bioanalytical Technology Hubei Normal University Huangshi 435002 Department of Chemistry Central China Normal University Wuhan 430079

The enhancing effect of benserazide on the chemiluminescence of luminol-potassium ferricyanide in alkaline medium was investigated, and a sensitive method for detecting benserazide has been developed by flow-injection chemiluminescence＇s. The experimental results showed that the emission intensity is proportional to the concentration of benserazide in the range of 0.01-1.0 μg/mL, The detection limit （S/N=3） for benserazide turned out to be 0.9 ng/mL, and the relative standard deviation for 11 determinations of a 0.10μg/mL benserazide was 2.4%. The method was satisfactorily applied to the determination of benserazide in spiked urine samples.

关键词： Chemiluminescence luminol benserazide detection.

Phenomenology of heavy neutral gauge boson at muon collider

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Science China(Physics,Mechanics & Astronomy) 2024年第3期67卷 60-79页

作者： Zongyang lu Honglei Li zhi-Long Han Zong-Guo Si Liuxin zhao School of Physics and Technology University of JinanJinan 250022China School of Physics Shandong UniversityJinan 250100China

Heavy neutral gauge boson Z' is proposed in many new physics *** has rich phenomena at the future muon *** study the properties of Z' boson with the process of μ^(+)μ^(-)→qq,μ^(+)μ^(-)→l^(+)l^(-),μ^(+)μ^(-)→ zh and μ^(+)μ^(-)→ W^(+)W^(-).The discrepancy of Z' coupling to different types of particles can be shown in the cross section distributions around the resonance peak of various decay *** distributions of the final quark or lepton in μ^(+)μ^(-)→qq/l^(+)l^(-)process are sensitive to the parameters such as mass of Z' and the Z-Z' mixing *** interaction of new gauge boson coupling to the standard model gauge particles and Higgs boson are also studied through μ^(+)μ^(-)→ zh→l^(+)l^(-)bb and μ^(+)u^(-)→ W^(+)W^(-)→l^(+)l^(-)v_(l)v_(l).The cross section and the final particles' angular distributions with the contribution of Z' boson differ from those processes with only standard model particles.A forward-backward asymmetry defined by the angular distribution is provided to show the potential of searching for new physics at the muon ***,the beam polarization with certain value can effectively enlarge the forward-backward asymmetry.

关键词： Z′boson muon collider new physics

Variation of toxic pollutants emission during a feeding cycle from an updraft fixed bed gasifier for disposing rural solid waste

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Chinese Journal of Chemical Engineering 2018年第3期26卷 608-613页

作者： Ming Lei Jing Hai Jiang Cheng Jiawei lu Jieru zh.ng Tao You School of Chemistry and Chemical Engineering South China University of Technology South China Institute of Environmental Sciences Ministry of Environmental Protection (MEP)

The variation of toxic pollutants emission during a feeding cycle was examined by field monitoring from a batch feeding updraft fixed bed gasifier for disposing rural domestic solid waste. Results showed that the content of oxygen in flue gas gradually increased, while SO_2 and HCl in flue gas decreased with time after feeding in a whole feeding cycle. Although large amount of CO was produced during the gasifying, low CO content in flue gas could be obtained after the heat treatment with an electric heating device. The distribution characteristics of dioxin congeners in flue gas indicted the re-synthesis of dioxins after flue gas heating, and the increase of oxygen promoted the synthesis of dioxins. The emission content of dioxins could meet the standard(0.1 ng I-TEQ·m^(-3),GB18458-2014) of China when the oxygen content was controlled below 8.3%. Hence, for a batch feeding gasifier,low oxygen condition should be offered by reducing air intake at the later stage of feeding cycle in order to decrease the re-synthesis of dioxins after the flue gas heating.

关键词： Updraft fixed bed gasifier Solid waste Pollutants Dioxins Emission Variation

Simultaneous determination of acetaminophen and oxycodone in human plasma by LC–MS/MS and its application to a pharmacokinetic study

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Journal of Pharmaceutical Analysis 2018年第3期8卷 160-167页

作者： Wei lu Shunbo zhao Meng Gong luning Sun Li Ding Department of Pharmaceutical Analysis China Pharmaceutical University 24 Tongjiaxiang Nanjing 210009 PR China Nanjing Clinical Tech Laboratories Inc. 18 Zhilan Road Jiangning District Nanjing 211000 PR China Research Division of Clinical Pharmacology the First Affiliated Hospital Nanjing Medical University Nanjing 210029 PR China

A simple and rapid liquid chromatography-tandem mass spectrometry （LC-MS/MS） method was de- veloped and validated for simultaneous determination of acetaminophen and oxycodone in human plasma. Acetaminophen-d4 and oxycodone-d3 were used as internal standards. The challenge en- countered in the method development that the high plasma concentration level of acetaminophen made the MS response saturated while the desired lower limit of quantification （LLOQ,） for oxycodone was hard to reach was well solved. The analytes were extracted by protein precipitation using acetonitrile. The matrix effect of the analytes was avoided by chromatographic separation using a hydrophilic C18 column coupled with gradient elution. Multiple reaction monitoring in positive ion mode was performed on tandem mass spectrometer employing electrospray ion source. The calibration curves were linear over the concentration ranges of 40.0-8000 ng/mL and 0.200-40.0 ng/mL for acetaminophen and oxycodone, respectively. This method, which could contribute to high throughput analysis and better clinical drug monitoring, was successfully applied to a pharmacokinetic study in healthy Chinese volunteers.

关键词： Acetaminophen Oxycodone LC-MS/MS Human plasma Pharmacokinetics

Annual Time-series Analyses of Total Gaseous Mercury Measurement and its Impact Factors on the Gongga Mountains in the Southeastern Fringe of the Qinghai-Tibetan Plateau

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Journal of Mountain Science 2008年第1期5卷 17-31页

作者： zhU Wanze FU Xuewu FEng Xinbin Julia Y. lu Institute of Mountain Hazard and Environment Chinese Academy of Sciences Chengdu 610041 China State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China Department of Chemistry and Biology Ryerson University Toronto Ontario M5B 2K3 Canada

Long-term monitoring programs for measurement of atmospheric mercury concentrations are presently recognized as powerful tools for local,regional and global studies of atmospheric long-range transport processes,and they could also provide valuable information about the impact of emission controls on the global budget of atmospheric mercury,their observance and an insight into the global mercury cycle. China is believed to be an increasing atmospheric mercury emission source. However,only a few measurements of mercury,to our knowledge,have been done in ambient air over China. The highly-time resolved atmospheric mercury concen-trations have been measured at Moxi Base Station (102°72′E 29°92′N,1640 m asl) of the Gongga Alpine Ecosystem Observation and Experiment Station of Chinese Academy of Sciences (CAS) from May 2005 to June 2006 by using a set of Automatic Atmospheric Mercury Speciation Analyzers (Tekran 2537A). Measurements were carried out with a time resolution of every 15 minutes. The overall average total gaseous mercury (TGM) covering the measurement periods was 4±1.38 ng·m-3 (N=57310),which is higher than the global background level of approximately 1.5～2.0 ng·m-3. The measurements in all seasons showed a similar diurnal change pattern with a high concentration during daytime relative to nighttime and maximum concentration near solar noon and minimum concentration immediately before sunrise. The presence of diurnal TGM peaks during spring and summer was found earlier than that during autumn and winter. When divided seasonally,it was found that the concentrations of TGM were highest in winter with 6.13 ± 1.78 ng·m-3 and lowest in summer with 3.17 ± 0.67 ng·m-3. There were no significant differences in TGM among wind sectors during each season. Whereas Hg generally exhibited significant correlations with the parameters,such as temperature,saturated vapor pressure,precipitation,ultraviolet radiation (UV) and atmospheric pressure at the whole measurement stage,

关键词： Total gaseous mercury (TGM) diurnal variability seasonal variability meteorological factor Gongga Mountains

Perfluoroalkyl substances and organochlorine pesticides in sediments from Huaihe watershed in China

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Journal of Environmental Sciences 2014年第11期26卷 2198-2206页

作者： Jing Meng Tieyu Wang Pei Wang John P.Giesy Yonglong lu State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences University of Chinese Academy of Sciences Department of Veterinary Biomedical Sciences and Toxicology Centre University of Saskatchewan

Twelve perfluoroalkyl substances （PFASs） and nine organochlorine pesticides （OCPs） were quantified in surface sediments from the Huaihe River, China, along which there are intensive industrial and agricultural activities. Concentrations of PFASs ranged from 0.06 to 0.46 ng/g dry weight （dw）, and concentrations of OCPs ranged from 1.48 to 32.65 ng/g dw. Compared with other areas in China, concentrations of PFASs were lesser than the national mean value, while concentrations of OCPs were moderate. Concentrations of perfluorooctanoic acid （PFOA） and perfluorooctane sulfonate （PFOS） ranged from n.d. （not detected） to 0.03 and n.d. to 0.10 ng/g dw, respectively. Among the three groups of OCPs, mean concentrations of hexachlorocyclohexane and its isomers （HCHs）, dichlorodiphenyltrichloroethane and its metabolites （DDTs） and hexachlorobenzene （HCB） were 5.62 ± 4.35, 2.43 ± 3.12 and 1.55 ± 4.17 ng/g dw, respectively. Concentrations of HCHs and DDTs decreased from upstream to downstream along the mainstream of the Huaihe River. When compared to sediment quality guidelines （SQGs）, concentrations of HCHs, DDTs and HCB would pose adverse biological effects. In general, contamination by PFASs in the upstream of the Huaihe River was more severe than that in the downstream, which was mainly caused by interception from dams, locks and industrial emissions. And OCPs from tributaries, especially the Yinghe River and Wohe River, were higher than those from Huaihe mainstream, and primarily came from historical inputs.

关键词： PFASs OCPs Sediment Risk assessment Huaihe River

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髓母细胞瘤16号染色体的杂合性丢失分析

中华病理学杂志 2005年第5期34卷 305-306页

作者：殷晓璐彭颂先吴浩强上海第二医科大学附属仁济医院病理科 200127 香港中文大学威尔斯亲王医院病理解剖及细胞学系

传统的细胞遗传学显示17号等臂染色体(isochromosome 17q)是髓母细胞瘤最常见的遗传学改变,占该肿瘤的50%～70%[1].近年来,随着比较基因组杂交(comparative genomic hybridization,CGH)技术的应用,人们在髓母细胞瘤整个基因组中发现了... 详细信息

传统的细胞遗传学显示17号等臂染色体(isochromosome 17q)是髓母细胞瘤最常见的遗传学改变,占该肿瘤的50%～70%[1].近年来,随着比较基因组杂交(comparative genomic hybridization,CGH)技术的应用,人们在髓母细胞瘤整个基因组中发现了更为广泛的遗传学改变.除了17号染色体的异常,染色体的失衡还较常见于10q (41%), 11 (41%), 16q (37%) 和8p (33%)[2].基于这些研究结果,我们试图在染色体16q上进一步寻找与髓母细胞瘤相关的抑癌基因丢失位点。

关键词：髓母细胞瘤 16号染色体杂合性丢失遗传学肿瘤

Translocation and distribution of mercury in biomasses from subtropical forest ecosystems:evidence from stable mercury isotopes

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Acta Geochimica 2021年第1期40卷 42-50页

作者： Yi Liu Che-Jen Lin Wei Yuan zhiyun lu Xinbin Feng State Key Laboratory of Environmental Geochemistry Institute of Geochemistry.Chinese Academy of SciencesGuiyangChina University of Chinese Academy of Sciences BeijingChina Center for Advances in Water and Air Quality Lamar UniversityBeaumontTXUSA College of Environment and Energy South China University of TechnologyGuangzhouChina National Forest Ecosystem Research Station AilaoshanYunnanChina

To understand its source,distribution,storage,and translocation in the subtropical forest ecosystems,mercury(Hg)concentrations and stable isotopes in forest biomass tissues(foliage,branch,bark,and trunk)were investigated at Ailao Mountain National Nature Reserve,Southwest *** total Hg(THg)concentrations in the samples show the following trend:mature foliage(57±19 ng g-1)>bark(11±4.0 ng g-1)>branch(5.4±2.5 ng g-1)>trunk(1.6±0.7 ng g-1).Using the measured THg concentrations and the quantity of respective biomasses,the Hg pools in the forest are:wood(60±26μg m-2)>bark(51±18μg m-2)>foliage(41±11μg m-2)>branch(26±8.3μg m-2).The tree biomasses displayed negativeδ202Hg(-1.83‰to-3.84‰)andΔ199Hg(-0.18‰to-0.62‰).The observedΔ200Hg(-0.08‰to 0.04‰)is not significantly from zero.AΔ199Hg/Δ201Hg ratio of 1.05 was found in tree biomasses,suggesting that mercury has undergone Hg(Ⅱ)photoreduction processes.A Hg-isotope based binary mixing model suggests that Hg in the tree biomasses mainly originated from foliage uptake of atmospheric Hg0,constituting 67%,80%,and 77%of Hg in wood,branch,and bark,*** study sheds new light on the transportation and sources of Hg in the subtropical forest ecosystems.

关键词： Hg Subtropical forest ecosystem Hg stable isotope Hg-isotope based binary mixing model

从文献计量角度分析城市发展与生态安全研究近况(2011-2013)

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上饶师范学院学报 2015年第2期35卷 75-81页

作者：卢青上饶师范学院经济与管理学院江西上饶334001

城市化是当前社会发展的趋势。城市化进程将改变自然生态系统的空间格局构成,影响区域生态安全。减少城市发展中可能产生的生态风险,是社会各界普遍关注的问题。以"中国知网"为依据检索2011至2013年间城市发展与生态安全文献题录,检中2... 详细信息

城市化是当前社会发展的趋势。城市化进程将改变自然生态系统的空间格局构成,影响区域生态安全。减少城市发展中可能产生的生态风险,是社会各界普遍关注的问题。以"中国知网"为依据检索2011至2013年间城市发展与生态安全文献题录,检中2107条。分析文献分布、作者简况及研究路向,就其促进研究深化陈述几点看法。

关键词：城市发展生态安全研究进展文献计量