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杂散光与吸光度误差和吸光度真值关系的研究

仪器仪表学报 2001年第1期22卷 54-57,71页

作者：李昌厚孙吟秋中国科学院上海生物工程研究中心上海200233

本文研究了紫外可见分光光度计 (UV/ VISS)的杂散光 S.L.(Strary L ight)与吸光度误差和吸光度真值之间的关系 ;导出了S.L.与吸光度误差和吸光度真值关系之间的理论计算公式。计算了 14种 S.L.下 ,吸光度误差与吸光度真值的关系 ,并绘制... 详细信息

本文研究了紫外可见分光光度计 (UV/ VISS)的杂散光 S.L.(Strary L ight)与吸光度误差和吸光度真值之间的关系 ;导出了S.L.与吸光度误差和吸光度真值关系之间的理论计算公式。计算了 14种 S.L.下 ,吸光度误差与吸光度真值的关系 ,并绘制了 12条误差曲线 ;同时对如何使用计算公式和有关的误差曲线、如何控制和选择 UV/ VISS的 S.L.、以及 UV/ VISS的 S.L.

关键词：杂散光吸光度误差吸光度真值比耳定律紫外可见分光光度计

Photocatalytic activity of bauxite-tailings supported nano-TiO_2

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Journal of Central South University 2010年第4期17卷 755-759页

作者：卢清华胡岳华王梦 School of Resources Processing and Bioengineering Central South University

TiO2/bauxite-tailings(TiO2/BTs) composites were prepared via a chemical liquid deposition method and characterized by X-ray diffractometry(XRD),scanning electronic microscopy(SEM) and N2 adsorption *** photocatalytic performance of TiO2/BTs composites was evaluated with UV-Vis spectrophotometer following the changes of phenol concentration under different illumination *** of the calcination temperature,the pH and the cycles on the photocatalytic activity of TiO2/BTs composites were *** composites calcined at 500 and 600 ℃ exhibit the best photocatalytic performance,and the phenol degradation ratios reacting for 40 and 160 min reach 35% and 78% respectively under the same conditions,higher than those of 29% and 76% of the Degussa P25(TiO2).The ability of TiO2/BTs500(BTs500 represents bauxite-tailings calcined at 500 ℃) composites to degrade phenol increases with decreasing pH.

关键词：纳米二氧化钛复合光催化剂尾矿铝土矿紫外可见分光光度计化学液相沉积法扫描电子显微镜光催化性能

Weathering of phosphorus-bearing mineral powder and calcium phosphate by Aspergillus niger

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Chinese Journal Of Geochemistry 2012年第4期31卷 390-397页

作者： QIU Shuangshuang LIAN Bin State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550002China Graduate University of Chinese Academy of Sciences Beijing 100049China

The weathering of phosphorus-bearing mineral powder(PBMP) and calcium phosphate(CP) by Aspergillus niger was compared,and the mechanism involved was analyzed for the comprehensive utilization of *** concentration of water-soluble phosphorus(WSP),Mg2+,and Ca2+at different culture times,microstructures of particles,and mineral compositions was examined by ultraviolet-visible spectrometer(UV),atomic absorption spectrometry(AAS),scanning electron microscopy(SEM),and X-ray diffraction(XRD).Results showed that the change in the concentrations of WSP,Mg2+,and Ca2+were related to the growth of *** and the different mineral *** with CP,PBMP was weathered harder by *** of the weathered mineral were found through *** not only showed traces of erosion damage but also appeared as a rhombohedron-like *** XRD test indicated that the weathering minerals can form water calcium *** analysis revealed that the mechanism of PBMP and CP weathering by *** was the collaborative result of mycelium biomechanical effects and the acid-soluble role of acidic *** phosphorus dissolution rate of PBMP after 20 d was 46.83%,whereas that of CP after 12 d was 91.01%.The findings of this study are significant to the effective use of waste PBMP and to the exploitation of low-grade phosphate rock resources.

关键词：磷酸钙磷矿物黑曲霉紫外可见分光光度计原子吸收光谱仪 XRD测试老化 X-射线衍射

Hydrophobic Ti_xO_y-C_mH_n Nanoparticle Film Prepared by Plasma Enhanced Chemical Vapor Deposition

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Journal of Donghua University(English Edition) 2012年第3期29卷 227-232页

作者：王德信徐金洲刘伟郭颖杨沁玉丁可石建军张菁 College of Material Science and Engineering State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsDonghua University College of Science Donghua University

The hydrophobic films of TixOy-CmHn deposited from mixture gases of titanium isopropoxide (TTIP) and oxygen by plasma enhanced chemical vapor deposition (PECVD) were investigated. The films were investigated by scanning electron microscope (SEM), transmission electron microscope (TEM), Fourier transform infrared spectrometer (FTIR), X-Ray diffraction (XRD), element analysis (EA), ultraviolet visible spectrometer (UV-Vis), and water contact angle (WCA). The results reveal that the surface of the films is formed by microsized papillaes aggregated by inorganic and organic phases of complex nanoparticles with size from 50 nm to 200 nm when the discharge power is increased from 40 W to 150 W. All films demonstrate the strong broad of Ti-O-Ti stretching vibration at 400-800 cm-1, -CH bending vibration at 1388 cm-1, and broadening -OH stretching vibration at 3000-3500 cm-1. With the increase of the discharge power, the as-deposited film changes from amorphous to crystallization. The WCA of the film can be as high as 160°, indicating the hydrophobicity. The films show a similar ultraviolet absorption property as the bulk TiO2 film. The composition of the composition of film deposited at 150 W can be formulated as Ti0.3O2-C1.5H3. Therefore, the composition formula of this hydrophobic film could be expressed as TiO2-C5H10O4.7. It is believed that the complex micro/nano structures of TiO2 and C5H10O4.7 residues are responsible for the observed hydrophobicity and the ultraviolet absorption property of the film.

关键词：等离子体增强化学气相沉积法纳米颗粒膜疏水性紫外可见分光光度计傅里叶变换红外光谱扫描电子显微镜透射电子显微镜二氧化钛

Synthesis and characterization of Cu_2ZnSnS_4 from Cu_2SnS_3 and ZnS compounds

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Optoelectronics Letters 2015年第4期11卷 277-280页

作者：李士娜马瑞新李东冉杨帆张晓勇李祥朱鸿民 School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials

The Cu2 Zn Sn S4(CZTS) powders are successfully synthesized by using Zn S and Cu2 Sn S3 as raw materials directly without any intermediate phase at 450 °C for 3 h in Ar *** crystalline structure,morphology and optical properties of the CZTS powders are characterized by X-ray diffraction(XRD),Raman spectrum,field emission scanning electron microscopy(FESEM) and ultraviolet-visible(UV-vis) spectrophotometer,*** results show that the band gap of the obtained CZTS is 1.53 e *** CZTS film is fabricated by spin coating a mixture of CZTS powders and novolac resin with a weight percentage of 30%.The photoelectrical properties of such CZTS films are measured,and the results show an incident light density of 100 m W·cm-2 with the bias voltage of 0.40 V,and the photocurrent density can approach 9.80×10-5 A·cm2 within 50 s,giving an on/off switching ratio of 1.64.

关键词：合成场发射扫描电子显微镜化合物 ZnS 紫外可见分光光度计表征 X-射线衍射 UV-Vis

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上海计量测试 2004年第1期31卷 69-74页

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甲硝唑氧化锌散的制备与临床应用

中国药物与临床 2007年第10期7卷 803-804页

作者：李新亚张静涛冯琴琴西安兵器工业521医院药剂科 710065

阴道炎是妇科门诊最常见的疾病，研究发现，在1181例阴道炎中，41％为细菌性，24％为滴虫性。我院妇科使用甲硝唑氧化锌散治疗阴道炎，特别是滴虫性阴道炎和细菌性阴道炎，取得了满意的疗效，现报告如下。1材料与方法1．1仪器与试药双... 详细信息

阴道炎是妇科门诊最常见的疾病，研究发现，在1181例阴道炎中，41％为细菌性，24％为滴虫性。我院妇科使用甲硝唑氧化锌散治疗阴道炎，特别是滴虫性阴道炎和细菌性阴道炎，取得了满意的疗效，现报告如下。1材料与方法1．1仪器与试药双光束紫外可见分光光度计（TU-1900型，北京普析通用仪器有限责任公司）；

关键词：氧化锌甲硝唑临床应用细菌性阴道炎紫外可见分光光度计滴虫性阴道炎妇科门诊

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检测食用酒精氰化物含量的不确定度评定

酿酒科技 2019年第5期 121-124页

作者：刘杨王超刘倩倩汤有宏安徽润安信科检测科技检测有限公司安徽亳州236820

按照GB 5009.36—2016《食品安全国家标准食品中氰化物的测定》,采用该标准第一法紫外分光光度法进行氰化物含量的检测,对整个测量过程的不确定度来源进行分析讨论,找出影响该过程的不确定度来源主要因素,并对不确定度来源进行详细的评... 详细信息

按照GB 5009.36—2016《食品安全国家标准食品中氰化物的测定》,采用该标准第一法紫外分光光度法进行氰化物含量的检测,对整个测量过程的不确定度来源进行分析讨论,找出影响该过程的不确定度来源主要因素,并对不确定度来源进行详细的评定,分析得出对氰化物含量检测的标准不确定度。

关键词：食用酒精氰化物紫外可见分光光度计不确定度

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影响分光光度计透射比示值偏差的原因分析

中国计量 2012年第7期 80-81页

作者：陈青华福建省莆田市计量所

紫外可见分光光度计作为化学物质定量分析的常用仪器．广泛应用于科研、生产、国防等各个领域。为厂保证仪器测量数值的准确可靠，必须依据JJG178—2007《紫外、可见、近红外分光光度计》检定规程进行检定．然而在使用和检定过程中，常... 详细信息

紫外可见分光光度计作为化学物质定量分析的常用仪器．广泛应用于科研、生产、国防等各个领域。为厂保证仪器测量数值的准确可靠，必须依据JJG178—2007《紫外、可见、近红外分光光度计》检定规程进行检定．然而在使用和检定过程中，常遇到仪器透射比示值发生偏差或检定结果有所不同。对此．笔者从以下二三个方面对产生偏差的原因进行分析。

关键词：紫外可见分光光度计透射比偏差示值红外分光光度计仪器测量检定规程定量分析