在紫外及可见光(190-800nm)照射下,引起分子中的电子能级跃迁,从而产生的吸收光谱,被称为紫外可见光谱(ultraviolet-visible spectra)。 | 仪器组成 | 光源:氘灯(2) (185 ~ 395nm)、钨灯(4) (350 ~ 800nm)。经平面镜(3)反射到曲面镜(1)聚焦后通过狭缝(5)到达凹面镜(8)。 单色器:由(8)反射的光到达...
UV-visible spectroscopy; 翻译结果3复制译文编辑译文朗读译文返回顶部 Ultraviolet-Visible spectra 翻译结果4复制译文编辑译文朗读译文返回顶部 ultraviolet-visible spectrum 翻译结果5复制译文编辑译文朗读译文返回顶部 Ultraviolet - visible spectrum 相关内容 aWe need to take this up with intertek. 我们需要采取此与int...
In this chapter, we have briefly described the UV-VIS spectroscopy by covering the fundamentals of UV-VIS spectroscopy, origin of spectra along with the types of electronic transitions. We have also described the effect of solvents on the absorption spectra of analyte. For proper working of UV-...
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á857ñ ULTRAVIOLET-VISIBLE SPECTROSCOPYINTRODUCTIONUltraviolet-visible (UV-Vis) spectra are derived when the interaction between incident radiation and the electron cloud in achromophore results in an electronic transition involving the promotion of one or more of the outer shell or the bonding elec...
Ultraviolet-visible spectra of Nafion membranedoi:10.1016/S0014-3057(96)00217-0The effect of pre-treatment, counterion and electrolyte concentration, temperature and aging of Nafion 117 membrane was investigated by electronic absorption spectroscopy. The band at 196 nm is sensitive to the cluster ...
A light source may be used if the practiceis consistent between the materials under comparison.á857ñ ULTRAVIOLET-VISIBLE SPECTROSCOPYINTRODUCTIONUltraviolet-visible (UV-Vis) spectra are derived when the interaction between incident radiation and the electron cloud in achromophore results in an ...
内容提示: á857ñ ULTRAVIOLET-VISIBLE SPECTROSCOPYINTRODUCTIONUltraviolet-visible (UV-Vis) spectra are derived when the interaction between incident radiation and the electron cloud in achromophore results in an electronic transition involving the promotion of one or more of the outer shell or the ...
Figure 2: UV-vis spectra of organic phases for 13M HNO3 system Charge-transfer Transitions Electron donor and acceptor characteristics Absorption involves e- transitions from donor to acceptor SCN to Fe(III) Fe(II) and neutral SCN Metal is acceptor ...
第二章紫外-可见分光光度法（Ultraviolet-VisibleSpectrophotometry）紫外-可见分子吸收光谱法（Ultraviolet-VisibleMolecularAbsorptionSpectrometry）2.1分光光度分析法发展简史1729年，Bouguer首先发现溶液对光的吸收与液层厚度之间的关系。1760年，Lambert就此基本定律进行了数学运算，确定了相应的关系式。1833年，Brewster在...