2020/06/19 14:50
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产品配置单:
EDWARDS宽量程复合冷规真空计WRG
型号: WRG, WRG-SL, WRG-D
产地: 英国
品牌: 埃地沃兹
¥1万 - 2万
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埃地沃兹EDWARDS Vacuum 冷阴极真空计 AIM200
型号: AIM200
产地: 英国
品牌: 埃地沃兹
¥5000 - 9999
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EDWARDS涡旋分子泵nEXT 85 - 400
型号: nEXT 85, nEXT 240, nEXT 300, nEXT 400
产地: 英国
品牌: 埃地沃兹
¥5万 - 10万
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EDWARDS干式涡旋泵nXDS
型号: nXDS6i nXDS10i nXDS15i nXDS20i
产地: 英国
品牌: 埃地沃兹
¥5万 - 10万
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方案详情:
应用于质谱分析(如GCMS、LCMS)、表面分析(如SEM、TEM、AFM)、材料表征(如XRD、XRF、FTIR)等分析应用,Edwards拥有齐全的真空产品,包括涡轮分子泵、干式涡旋泵、干式隔膜泵、离子泵、油封旋片泵、检漏仪等,可灵活提供合适的解决方案。
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NanoBrook产品应用-12-ZetaPALS
文献名: Structural, morphological and optical properties of Bi NPs obtained by laser ablation and their selective detection of L-cysteine 作者: Ramon Gabriel Teixeira Rosaa, Celso de Araujo Duartea , Wido Herwig Schreinera, Ney Pereira Mattoso Filhoa, Arandi Ginane Bezerra Jr.b, Andersson Barisonc, Fernanda Maria Marins Ocamposc a Departamento de Física, Universidade Federal do Paraná Centro Politécnico, CP 19044, 81531-990 Curitiba (PR), Brazil b Departamento Acadêmico de Física, Universidade Tecnológica Federal do Paraná, 80230-901 Curitiba (PR), Brazil c Departamento de Química, Universidade Federal do Paraná Centro Politécnico, CP 19081, 81531-990 Curitiba (PR), Brazil 摘要:In the present work we show the results of the investigation of the properties of bismuth nanoparticles (NPs) obtained by the laser ablation in water. The samples were characterized by various techniques: UV/vis spectroscopy, dynamic light scattering, transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, nuclear magnetic resonance and zeta potential. The NPs were metallic and surface oxidated, exhibiting absorption peak at 257 nm due to the surface plasmon resonance. The interaction between the NPs and various amino acids was studied and revealed a selective sensibility to cysteine on a range of concentration from 80 to 720 μM, which we attribute to a dimerization of cysteine to cystine probably complexed to the nanoparticle surface by electrostatic interactions, leading to the modification of the NP absorption spectrum. 关键词:Bismuth; Nanoparticles; Laser ablation; Cysteine
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城市污水中TOC与COD的关系
TOC与COD的测定方法不同。测定COD是采用强氧化剂和加热回流的方法,只能将水中的有机物部分氧化(氧化率较低),并且测定时间较长,即使目前一些快速的
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2017/11/16
基于紫外分光光度法的水中油测试方法
矿物油组成中的共轭体系物质在紫外光区有较强的吸收,依据朗博 - 比尔定律,在256nm紫外光波长,可测定油样的吸光度来确定相应油的量。 由于紫外光度法对于油种的敏感性较强,本方法的油样需采用标准物质。
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2021/05/31
Epsilon 1 国六燃油版——硫氯分析性能媲美波谱仪
Epsilon 1 仪器主机和用户软件,针对燃料中的硫进行了符合ISO 13032 标准的出厂预校准。针对氯分析进行了预校准。验证标准样品。一个启动套件,用于制备 100 个液体样品杯进行分析。监控样品,使校准保持最新状态。
石油/化工
2022/08/11