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光谱仪和分光光度计有什么区别
www2138com官网:0 发布时间:2017-02-08
 

  光谱仪可以自动绘出光谱图,而分光光度计通常指一次测定只能在一个波长(频率、或波数)处进行,想要绘制光谱图的话,必须手动不断改变工作波

  The spectrometer can automatically draw the spectrogram, and spectrophotometer usually refers to a measurement can only be carried out at one wavelength (frequency, or wave number), if you want to draw the spectrogram, you must manually change the working wave

  长(频率、或波数),分别测定后,手工绘制光谱图.显然这种仪器对于需要经常根据光谱图定性分析的用户而言是很不方便的,但价格相对于光谱仪要便宜得多,

  Long (frequency or wavenumber), were measured after hand drawn spectrum. Obviously this instrument for spectrum analysis is often based on qualitative user is very convenient, but the price is much cheaper than spectrometer,

  对只需定量分析的用户就够用了.

  For quantitative analysis of the user is enough

  1、光谱仪,以光电倍增管等光探测器测量谱线不同波长位置强度的装置。其构造由一个入射狭缝,一个色散系统,一个成像系统和一个或多个出射狭缝组成。以色散元件将辐射源的电磁辐射分离出所需要的波长或波长区域,并在选定的波长上(或扫描某一波段)进行强度测定。分为单色仪和多色仪两种。

  1, spectrometer, photomultiplier tube and other optical detectors to measure the spectral line of different wavelength position strength device. The structure is composed of an incident slit, a dispersion system, an imaging system and one or more exit slits. The electromagnetic radiation of the radiation source is separated by a dispersive element to the desired wavelength or wavelength region, and the intensity is measured at the selected wavelength (or scanning a band). Divided into two kinds of monochromator and spectrometer.

  2、分光光度计是将成分复杂的光,分解为光谱线的科学仪器。测量范围一般包括波长范围为380~780

  2, spectrophotometer is the composition of complex light, into the spectral line of scientific instruments. The measurement range generally includes a wavelength range of 380~780

  nm的可见光区和波长范围为200~380

  Nm and visible light wavelength range of 200 to 380

  nm的紫外光区。不同的光源都有其特有的发射光谱,因此可采用不同的发光体作为仪器的光源。钨灯的发射光谱:钨灯光源所发出的380~780nm波长的光

  Nm UV region. Different light sources have their own unique emission spectrum, so different illuminant can be used as the light source. Emission spectrum of tungsten lamp: light of 380 ~ 780nm wavelength emitted by tungsten lamp

  谱光通过三棱镜折射后,可得到由红、橙、黄、绿、蓝、靛、紫组成的连续色谱;该色谱可作为可见光分光光度计的光源

  Spectrum of light through the three prism refraction can be obtained after continuous chromatography composed of red, orange, yellow, green, blue, indigo and purple; chromatography can be used as the light source of the visible light spectrophotometer


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