荧光谱

摘要： 本文主要分析讨论无线电监测中频域数据的获取和处理,通过描述频谱分析以及时频联合分析的重要性和必要性,指出当前频谱分析工具及手段在某些典型场景中的不足,并给出改进建议。

摘要： 利用FS920荧光光谱仪测量21种芝麻油和同品牌不同批次2种芝麻香精共23个样品的荧光光谱,并对激发-发射荧光谱数据矩阵(EEMs)进行平行因子分析,确定了平行因子分析模型的因子数及各因子的物质基础.综合分析同步三维荧光谱、激发-发射三维荧光谱及其等高线光谱图,给出了芝麻油及芝麻香精的峰位、峰数和峰强等特征信息;应用平行因子模型建立了芝麻油及芝麻香精的3因子激发、发射光谱轮廓图和样本因子相对含量图.证实荧光光谱技术和平行因子分析法对芝麻油和芝麻香精进行分析和鉴别的有效性.

摘要： 叙述了K2Te日盲紫外阴极的制作工艺并制作了K2Te日盲紫外阴极，测量了K2Te日盲紫外阴极的光谱响应、光谱反射率、光谱吸收率和250 nm波长激发条件下的荧光谱。与Cs2Te日盲紫外阴极相比较，K2Te日盲紫外阴极的光谱响应较低，而且光谱响应的峰值波长更短，长波截止波长也更短。K2Te日盲紫外阴极光谱响应的峰值波长位于215 nm，长波截止波长位于305 nm，而Cs2Te日盲紫外阴极光谱响应的峰值波长位于250 nm，长波截止波长位于323 nm。另外K2Te日盲紫外阴极的日盲特性更好，633 nm波长的光谱响应为10－6 mA/W的数量级，较Cs2Te日盲紫外阴极低一个数量级。光谱反射率的测量结果表明，K2Te日盲紫外阴极的光谱反射率曲线形状与Cs2Te日盲紫外阴极的光谱反射率曲线形状相似，区别是整个光谱反射率曲线向短波方向移动，且波长越长，移动越大。另外K2Te日盲紫外阴极的光谱反射率在200～450 nm的波长范围内均高于Cs2Te日盲紫外阴极的光谱反射率，由此可推断出K2Te 紫外阴极的折射率高于Cs2Te 紫外阴极的折射率，并且波长越长，折射率差别越大。光谱吸收率的测量结果表明，K2Te 日盲紫外阴极的吸收率低于Cs2Te 紫外阴极的吸收率。光谱吸收率越高，光谱响应也越高，与光谱响应的测量结果相吻合。荧光谱的测试结果表明，在250 nm 波长激发条件下，在200～450 nm 的波长范围内，K2Te 紫外阴极的荧光弱于Cs2Te 紫外阴极的荧光，原因是K2Te 阴极的吸收率低于Cs2Te 紫外阴极的吸收率。光谱吸收率越高，荧光越强，这同样与光谱响应的测试结果相吻合。所以K2Te 日盲紫外阴极与Cs2Te 日盲紫外阴极相比，尽管光谱响应较低，但日盲特性更好，因此也可用作为日盲紫外探测器的紫外阴极。%In this paper the making process of K2Te solar blind ultraviolet photocathode is described and its behavior such as spectral response, spectral absorptance and the fluorescence spectra under the excitation of 250nm wavelength UV light were measured. The measured results are compared with corresponded results of Cs2Te solar blind ultraviolet photocathode. Our findings suggest that the spectral response of K2Te solar blind ultraviolet photocathode is lower, and the peak wavelength of the spectral response is shorter, moreover the long-wavelength threshold is shorter as well. The peak wavelength of the spectral response is 211nm, the long-wavelength threshold is 298nm for the K2Te photocathode, while the peak wavelength of the spectral response is 250nm, and the long-wavelength threshold is at 347nm for the of Cs2Te photocathode. In addition, K2Te photocathode has better solar blind property since its spectral response at 633nm is in the order of magnitude of 10-6mA/W, almost two orders of magnitude lower than that of Cs2Te photocathode. The findings of spectral absorption indicate that the photon absorption of K2Te photocathode is lower than that of Cs2Te photocathode. The higher the spectral absorption, the higher the spectral response is. This matches our findings of spectral response. The findings on fluorescence spectra indicate that under the UV light excitation of 250nm wavelength and measured within the wavelength range of 200 to 450 nm; the fluorescence of K2Te photocathode is less intense than that of Cs2Te ultraviolet cathode, which matches our findings of the spectral response and spectral absorbance well. Thus, compared with Cs2Te solar blind ultraviolet photocathode, although the spectral response of K2Te solar blind ultraviolet cathode is lower, the solar blind property is better and therefore is potentially very useful for solar blind ultraviolet detectors.

摘要： 研究了K2Te（Cs）日盲紫外阴极的制作工艺并制作了K2Te（Cs）日盲紫外阴极.测量了K2Te（Cs）日盲紫外阴极样品的光谱响应、光谱反射率和250nm波长激发条件下的荧光谱,测量结果表明：与Cs2Te日盲紫外阴极相比,在现有工艺条件下,K2Te（Cs）日盲紫外阴极的灵敏度高于Cs2Te日盲紫外阴极,光谱响应的峰值波长更短,位于250nm,而长波截止波长位于336nm;633nm的光谱灵敏度为10-4 mA/W数量级,较Cs2Te日盲紫外阴极低一个数量级.光谱反射率测量结果表明：K2Te（Cs）日盲紫外阴极的光谱反射率在200~437nm的波长范围内,均高于Cs2Te日盲紫外阴极,而在437~600nm的波长范围内,反射率却与Cs2Te日盲紫外阴极基本相同;折射率及消光系数也低于Cs2Te日盲紫外阴极.荧光谱测试结果表明：在同样条件下,250~350nm波长范围内,由于K2Te（Cs）紫外阴极的荧光强于Cs2Te紫外阴极,因此跃迁电子数量更多,阴极灵敏度更高,比较适用于日盲紫外探测成像器件的制造.

摘要： For the process of waste water treatment process amino acid fluorescence analysis,the fluorescence spectrum measurement of multi-channel series linear model was put forward based on the scattering correction constructed between the relative fluorescence intensity and concentration.The results of the study show that,the tryptophan present a good linear relationship in the linear fitting,through the scattering calibrating method spectrum data processing,it effectively reduced the scattering and measuring the effect of environmental noise and improve the signal-to-noise ratio of the spectral data,the more accurate data after adjusting the structure of tryptophan relative fluorescence intensity and concentration of the linear correlation.The spectrum series linear model provided the selection and mixed solution online analytical theory basis for the spot inspection instrument in the developing process of filtering.%针对废水中氨基酸荧光分析过程中光谱数据去噪声处理过程,提出了基于多元散射校正思想建立相对荧光强度与浓度关系模型的方法,建立了荧光测量中多波段波谱系列线性模型.研究结果表明,实验数据进行线性拟合,色氨酸呈现出良好线性关系,通过多元散射校正方法进行光谱数据处理,有效降低了散射及测量环境噪声的影响,提高了光谱数据的信噪比,校正后数据更加准确的表征了色氨酸相对荧光强度与浓度数据之间的线性相关性.建立的多波段波谱系列线性模型为现场检测仪器研制过程中滤波片的选择及混合溶液的在线解析提供了理论依据.

摘要： In this paper, the processing technology of Rb2Te(Cs) solar blind ultraviolet cathode is described and samples of Rb2Te(Cs) solar blind ultraviolet cathode were produced. The spectral response, spectral reflectance and the fluorescence spectra under the excitation condition of 250 nm wavelength of Rb2Te(Cs) solar blind ultraviolet cathode samples were measured. The findings suggest that under the existing technological condition, the sensitivity of Rb2Te(Cs) solar blind ultraviolet cathode is greater than that of Cs2Te;as compared with Cs2Te solar blind ultraviolet cathode, the peak wavelength in spectral response is shorter at 250 nm, while the cutoff wavelength of long wave is at 315 nm. In addition, Rb2Te(Cs) solar blind ultraviolet cathode has better solar blind property;the spectral sensitivity at 633 nm is ranked at the order of magnitude of 10-5 mA/W, two order of magnitudes lower than that of Cs2Te solar blind ultraviolet cathode. In terms of spectral reflectance, the findings show that the spectral reflectance of Rb2Te(Cs) solar blind ultraviolet cathode is higher than that of Cs2Te solar blind ultraviolet cathode within the scope of 200-400 nm wavelength, and is lower than that of Cs2Te solar blind ultraviolet cathode within the scope of 400-600 nm wavelength. The spectral reflectance curves of Rb2Te(Cs) solar blind ultraviolet cathode and Cs2Te solar blind ultraviolet cathode are similar in shape, and the peaks in spectral reflectance curve of Rb2Te(Cs) solar blind ultraviolet cathode are basically same to the peaks in spectral reflectance curve of Cs2Te solar blind ultraviolet cathode. It is concluded that the refractive index of Rb2Te(Cs) solar blind ultraviolet cathode is basically same as that of Cs2Te solar blind ultraviolet cathode, only small difference in the range of longer wavelength. The findings on fluorescence spectra indicate that under the same condition and within the scope of 200-450 nm wavelength, the fluorescence of Rb2Te(Cs) ultraviolet cathode is more weaker than that of Cs2Te ultraviolet cathode, as the reflectance of Rb2Te (Cs) cathode is higher than that of Cs2Te ultraviolet cathode, the more the photo absorption, the more intense the fluorescence. Thus, the properties of Rb2Te(Cs) solar blind ultraviolet cathode are similar to those of Cs2Te solar blind ultraviolet cathode, and both cathodes can be applied to image device for solar blind ultraviolet detection.%简述了 Rb2Te(Cs)日盲紫外阴极的制作工艺并制作了 Rb2Te(Cs)日盲紫外阴极样品。测量了Rb2Te(Cs)日盲紫外阴极样品的光谱响应、光谱反射率和250 nm波长激发条件下的荧光谱。测量结果表明，在现有工艺条件下，Rb2Te(Cs)日盲紫外阴极的灵敏度高于Cs2Te日盲紫外阴极，与Cs2Te日盲紫外阴极相比，光谱响应的峰值波长更短，位于250 nm，而长波截止波长位于312 nm。另外Rb2Te(Cs)日盲紫外阴极的短波日盲特性更好，633 nm的光谱灵敏度为10-5 mA/W的数量级，较Cs2Te日盲紫外阴极低两个数量级。光谱反射率测量结果表明，Rb2Te(Cs)日盲紫外阴极的光谱反射率在200～400 nm的波长范围内均高于Cs2Te日盲紫外阴极，而在400～600 nm的波长范围内，反射率却低于Cs2Te日盲紫外阴极。Rb2Te(Cs)日盲紫外阴极的光谱反射率曲线与Cs2Te日盲紫外阴极的光谱反射率曲线相比较，曲线的形状相似，反射干涉加强峰的波长基本相同，由此可推断出 Rb2Te(Cs)紫外阴极的折射率与Cs2Te紫外阴极的折射率基本相同，仅在长波范围内稍有区别。荧光谱的测试结果表明，在同样条件下，在200～450 nm的波长范围内，Rb2Te(Cs)紫外阴极的荧光弱于Cs2Te紫外阴极的荧光，原因是Rb2Te(Cs)阴极的光谱反射率高于Cs2Te紫外阴极的光谱反射率，因此光吸收更少，导致荧光更弱。所以Rb2Te(Cs)日盲紫外阴极同Cs2Te日盲紫外阴极的性能类似，均可用于日盲紫外探测成像器件。

摘要： In this paper, the spectral response and fluorescence spectrum of three Na2KSb multi-alkali cathodes without Cs activation, with Cs activation and with both Cs and Cs-Sb activation were measured. The measurement results show that, Na2KSb cathode after Cs activation, the cathode sensitivity was increased, long-wavelength cutoff wavelength was also extended, but the peak wavelength and peak intensity of fluorescence spectrum was essentially unchanged. The elongation of long-wavelength cutoff wavelength shows that work function of cathode is reduced, so the Na2KSb cathode after Cs activation, the increase of cathode sensitivity and elongation of long-wavelength cutoff wavelength is due to the lower work function. Na2KSb cathode after both Cs activation and Cs-Sb activation, the cathode sensitivity and long-wavelength cutoff wavelength were further increased, but the peak wavelength and peak intensity of fluorescence spectrum was changed. The peak wavelength was shifted towards the short wavelength and peak fluorescence intensity was increased. The shift of peak wavelength toward short direction showed that energy level of transition electron was increased and increasing of peak intensity of fluorescence spectrum showed that number of transition electron was increased. For Na2KSb cathode with Cs activation and Cs-Sb activation, the increase of transition electrons number and transition electron energy level has a positive effect on the cathode sensitivity. Therefore the reasons of increase for cathode sensitivity and long-wavelength cutoff wavelength of Na2KSb cathode by Cs activation and Cs-Sb activation are the increase in the number of transitions and transition electron energy levels except for the reason of reduced surface work function. Cathode surface electron escape mechanism is not yet conclusive, thus to improve the cathode sensitivity, further research is needed to figure out the objective law of cathode surface activation process. This will help to provide theoretical guidance to further improve cathode production process and to increase cathode sensitivity.%　　测量了未经过Cs激活、经过Cs激活以及经过Cs-Sb激活的三种多碱阴极的光谱响应及荧光谱.测量结果表明,Na2KSb 阴极膜层经表面激活之后,阴极灵敏度和长波截止波长均有所增加,但荧光谱的峰值波长和峰值荧光强度基本保持不变.长波截止波长的增加说明逸出功降低,因此多碱阴极Na2KSb膜层经Cs激活之后,阴极灵敏度提高和长波截止波长增加的原因是逸出功的降低.Na2KSb膜层同时经过Cs-Sb激活之后,阴极灵敏度和长波截止波长较仅仅经过Cs激活的多碱阴极有进一步更大幅度的提高和增加,但同时荧光谱的峰值波长向短波方向移动,峰值荧光强度增加.荧光谱的峰值波长向短波方向移动,说明跃迁电子的能级有所升高,而荧光谱的峰值强度增加,意味着跃迁电子的数量增加.多碱阴极Na2KSb膜层经过Cs-Sb激活之后,跃迁电子的数量增加以及跃迁电子的能级升高,对阴极灵敏度的提高而言,所取得的作用相同.因此多碱阴极 Na2KSb 膜层经过Cs-Sb激活之后,阴极灵敏度和长波截止波长提高的原因除了表面逸出功降低之外,还有跃迁电子数量增加以及跃迁电子能级提高的原因.多碱阴极表面电子逸出机理至今仍未定论,因此要进一步提高多碱阴极的灵敏度,需要进一步研究多碱阴极表面激活过程中的客观规律,为进一步改进多碱阴极的制作工艺,提高多碱阴极的灵敏度提供理论指导.

摘要： The fluorescence spectra of transparent GaAs photocathode of four layer, two layer structure assembly and the third generation image intensifier are measured. The wavelengths of the exciting light are respectively 514.5 nm and 785 nm. The measurement results show that the peak wavelength of fluorescence spectrum of the GaAs epitaxial layer is longer than that of GaAs substrate fluorescence. When the cathode of GaAs four-layer structure assembly were made into two-layer structure assembly, peak wavelength of fluorescence of GaAs emission layer shifts toward the long wavelength. After the GaAs cathode of two-layer structure assembly was thinner and activated by Cs-O, the peak wavelength of fluorescence of GaAs cathode emissive layer shifted to short wavelength direction. While the third generation image intensifier GaAs cathode assembly is in the production process, the major cause of its peak wavelength variation of fluorescence spectrum is the internal lattice strain of GaAs emission layer, so when the four layers of the GaAs photocathode was made into two layers, due to changes in GaAs emission layer internal lattice strain state, the peak wavelength of fluorescence spectra is moved to long wavelength direction. After thinning, heat cleaning and activation to the two layers of the GaAs emission layer, due to internal stress release, strain can be eliminated to a certain extent, so the peak wavelength of GaAs fluorescence emission layer is shifted to short wavelength direction. Typically, the fluorescent spectrum of GaAs material is a Gauss curve, but the GaAs cathode assembly of the third generation image intensifier, when in the presence of no uniform lattice strain of GaAs emission layer, the fluorescence spectrum curves in the peak will occur near the irregular shape, and when the lattice strain in homogeneity is eliminated, fluorescence spectral curve will be restored to the normal shape. The strain of the GaAs emissive layer will be reflected by fluorescence spectrum, so in the process of making GaAs photocathode, in addition to measuring the integrated fluorescence of GaAs photocathode, the peak wavelength change of GaAs fluorescent spectrum can also be measured in order to monitor GaAs photocathode process.%　　测量了透射式GaAs光电阴极四层、二层结构组件和三代像增强器光电阴极的荧光谱。激发光的波长分别为514.5 nm和785 nm。测量结果表明，GaAs外延层荧光谱的峰值波长较GaAs衬底荧光峰值波长长。当 GaAs 阴极四层结构组件变为二层结构组件时，GaAs 发射层的荧光谱峰值波长向长波方向移动。将 GaAs 阴极二层结构组件减薄激活之后，GaAs 阴极发射层的荧光谱峰值波长向短波方向移动。三代像增强器GaAs阴极组件在制作过程中荧光谱峰值波长变化的原因主要是GaAs发射层内部晶格存在应变，因此当四层GaAs阴极组件变为二层GaAs阴极组件之后，由于GaAs发射层内部晶格应变状态的变化，致使荧光谱的峰值波长向长波方向移动。当二层GaAs阴极组件经过减薄、热清洗和激活之后，由于GaAs发射层内部应力的释放，应变在一定程度上得到消除，因此GaAs发射层的荧光谱峰值波长又向短波方向移动。通常情况下，GaAs 材料的荧光谱是一条高斯型的曲线，但对三代管GaAs阴极组件而言，当GaAs发射层中存在不均匀的晶格应变时，其荧光谱曲线在峰值附近会出现不规则的形状，而当不均匀的晶格应变消除后，荧光谱曲线会恢复到正常的形状。所以GaAs 发射层中存在的应变会通过荧光谱反映出来，这样在 GaAs 光电阴极的制作过程中，除了通过测量积分光荧光来评价GaAs光电阴极的制作过程之外，还可以通过测量GaAs光电阴极荧光谱的峰值波长变化来监控GaAs光电阴极的制作过程。

摘要： 介绍了多碱光电阴极Na2KSb膜层荧光谱的测量原理,测量了两个Na2KSb膜层样品在不同半径位置的荧光谱.测量数据表明,Na2KSb膜层荧光谱的峰值波长从阴极面的中心到边缘逐步增大,同时峰值荧光强度也逐步增强.原因是阴极窗表面的锑原子密度从中心向边缘逐步减小.当Na2KSb膜层中的锑超过Na2KSb所需的化学计量比时,荧光峰值波长向短波方向移动,同时荧光强度减弱;当Na2KSb膜层中的锑达到Na2KSb所需的化学计量比时,荧光峰值波长达到最大,同时荧光强度也达到最强.通过荧光测试,可以判断Na2KSb膜层的化学计量比是否达到2∶1∶1或膜层中的锑是否过量.同时通过测量阴极面上不同位置的荧光谱,可以测量Na2KSb膜层在阴极面上的组份均匀性.锑在阴极面上的原子密度越均匀,利用整个阴极面上的光电流变化来监控阴极膜层生长的方法就更准确,组份均匀性也更好,Na2KSb膜层的厚度可以更厚,对长波可见光的吸收更多,阴极的灵敏度也更高.因此在像增强器多碱阴极的制造过程中,要尽量使蒸发在阴极窗表面的锑原子密度均匀,这样才能获得更高的阴极灵敏度.

摘要： 从马铃薯中纯化一种天冬氨酸蛋白酶抑制荆(PPI)并对其与DNA的相互作用及抗氧化作用进行研究.以溴化乙啶作为探针,利用荧光法在初步筛选抗癌药物上的应用,首次对PPI与DNA的相互作用进行了研究;利用二苯代苦味酰基自由基体系、H2O2/Fe2+产生的羟基自由基体系、超氧阴离子自由基体系对PPI的体外清除自由基的能力进行研究,结果表明PPI具有一定体外抗氧化活性且从与DNA作用的角度分析可能具有抗癌效果.%The purpose of this study was to purify a kind of aspartic protease inhibitor from potato and investigate its interaction with DNA and antioxidant activity. With ethidium bromide as a probe, Fluorescence method for screening anticancer drugs in the application, the first time the interaction between PPI and DNA has been studied; Use scavenging of free radicals of flavonoids, DPPH, H2O2/Fe2+ for hydroxyl radical system and superoxide anion radical system of the PPI in vitro antioxidant activity study, The results show that PPI has some antioxidant activity in vitro and from the point of view with the DNA may have anticancer effects.

摘要： 利用BIBO(BiB3O6)晶体的倍频效应，由半导体激光器产生的波长为846nm激光可以获得波长为423nm的蓝光。真空室内的钙炉在加热到600°C时产生钙原子束。将423nm激光垂直照射到钙原子束上，用光电探测器可以获得钙原子束的荧光谱，谱线的半峰全宽（FWHM）为100MHz。

摘要： 对掺铒光纤的荧光谱的温度特性进行了分析,针对基本结构的掺铒超荧光光纤光源,改变泵浦功率和环境温度,研究了单程前、后向输出光的中心波长的稳定性.实验分析表明,采用双程结构可明显改善其光谱的热稳定性;对双程后向机构光纤光源进行优化设计,可使它的光谱对温度不敏感.

摘要： 本文报道选用含有胺基的正丁胺作碳源,采用射频辉光放电法制备碳膜钝化多孔硅的结果,主要研究钝化多孔硅经存放后荧光谱随温度的变化规律,并测量了整个钝化多孔硅及多孔硅层的电阻-温度特性,对其实验结果给出了较好的解释.

摘要： 本文在低扫速循环伏安电位驱动下开展的电位分辨的电致化学发光研究,考察了一种大面积薄层电化学池设计,它具有良好的电致化学发光特性.

摘要： 利用紫外可见分光光度计、荧光光度主动脉 原子力显微镜测定罗丹明B与双链DNA的相互作用方式,探讨罗丹明B对DNA的识别模式和作用机制.希望能够为特殊的药物分子对NDA的特异性识别提供有益信息.

摘要： 利用紫外可见分光光度计、荧光光度主动脉 原子力显微镜测定罗丹明B与双链DNA的相互作用方式,探讨罗丹明B对DNA的识别模式和作用机制.希望能够为特殊的药物分子对NDA的特异性识别提供有益信息.

摘要： 利用紫外可见分光光度计、荧光光度主动脉 原子力显微镜测定罗丹明B与双链DNA的相互作用方式,探讨罗丹明B对DNA的识别模式和作用机制.希望能够为特殊的药物分子对NDA的特异性识别提供有益信息.

摘要： 本发明公开了一种原子荧光光谱仪背景扣除方法，包括：通过目标元素光源对被测样品进行测试，得到第一荧光信号；所述第一荧光信号为所述被测样品中目标元素和干扰元素所产生的荧光信号的叠加信号；通过扣背景光源对所述被测样品进行测试，得到第二荧光信号；所述第二荧光信号值为所述被测样品中干扰元素所产生的荧光信号；将所述第一荧光信号与第二荧光信号进行作差运算，得到所述目标元素的荧光信号。本发明通过增加扣背景光源，得到被测样品中干扰元素所产生的荧光信号，进而采用算法扣除干扰元素所产生的荧光信号，提高测试的准确率。

摘要： 本发明公开了一种荧光光谱校正方法和荧光光谱测量装置。一种荧光光谱校正方法，包括：对从标记有多个荧光染料的微粒获取的荧光光谱与参考光谱进行比较，从而将荧光光谱分离为针对每个染料的荧光光谱，并且将先前测得的光谱数据用作为参考光谱。

摘要： 本发明涉及一种多探测器及多光管的X射线荧光光谱仪，包括外壳组件、样品仓组件、X光管组件、探测器组件和滤光系统组件，其中样品仓组件组装在外壳组件内，包括向上开口的仓体和用于封闭仓体的仓门，仓体内有容置空间；X光管组件设多个，包括X光管，X光管的出射口朝向仓体的容置空间；探测器组件设多个，包括探测器，探测器的探测头朝向仓体的容置空间。本发明可以对置于在较大空间内的物品进行全方位的测定分析，测量时间短，准确度高，对安检、在线质量监控等领域的检测特别适用。

摘要： 一种荧光分析光复用器/分离器，一种荧光分析光学模块，一种荧光分析仪，一种荧光/光热转换光谱分析仪和一种荧光分析片，据此能够容易、高灵敏度地进行LIF分析，更进一步能够与这一LIF分析同时并且容易地进行光热转换光谱分析。一种微量化学系统包括荧光分析光学模块、探头以及上面安装了该荧光分析片的样本平台。该荧光分析光学模块包括输出主波长为λ

摘要： 本发明公开了一种荧光光谱仪的滤光片切换装置，包括：安装基体，用于连接荧光光谱仪的射线头，具有用于射线头的X射线穿过的射线通道；转盘，具有多个用于安装滤光片的安装位，转盘与所述安装基体转动连接，以使得随着所述转盘转动，转盘上各个所述安装位上的所述滤光片能够依次经过所述射线通道；驱动机构，用于驱动所述转盘转动。在该荧光光谱仪的滤光片切换装置中，设置了转盘，并使转盘上设置有了多个滤光片安装位，以安装不同种类的滤光片，然后通过转盘的转动，可以选择不同安装位的滤光片进入到射线通道处进行滤光，进而满足不同的滤光需要，且操作方便简单。本发明还公开了一种包括上述滤光片切换装置的手持荧光光谱仪。

摘要： 本发明提供了一种用于原子荧光光谱仪的气液分离器及原子荧光光谱仪，气液分离器包括分离器壳体以及制冷组件：分离器壳体开设有进气口、排液口和排气孔；制冷组件容置于分离器壳体内，且制冷组件与分离器壳体的内壁间隔设置，以形成制冷腔；制冷腔分别连通于进气口、排液口及排气孔。本实施例的气液分离器通过设置制冷组件，可以对进入气液分离器内的气液混合物进行制冷操作，从而提高气液分离效果。本实施例的原子荧光光谱仪中，通过设置上述气液分离器，可以有效防止原子化过程中的信号干扰，避免荧光猝灭现象的发生，从而降低原子荧光光谱仪检测信号的噪声，检测效果得以提高。

摘要： 本发明属于荧光光谱技术测试领域，尤其涉及一种荧光光谱的测试装置以及荧光光谱的测试方法。荧光光谱的测试装置，用于获取待测材料的荧光光谱，其特征在于，荧光光谱的测试装置包括：激发结构，包括激发光源以及角度调节机构，激发光源用于生成预设波长的激发光束，激发光束以预设的入射角度入射待测材料表面，角度调节机构用于调节入射角度的值；旋转结构，用于固定待测材料，并根据用户输入的控制指令对待测材料和激发光源进行同步旋转；以及检测结构，用于接收待测材料生成的受激光束，并根据受激光束得到对应的荧光光谱。本发明通过分析在不同旋转角度下测得的荧光光谱，最终得到待测材料的角度分布特性。

摘要： 本发明公开了一种原子荧光光谱仪背景扣除方法，包括：通过目标元素光源对被测样品进行测试，得到第一荧光信号；所述第一荧光信号为所述被测样品中目标元素和干扰元素所产生的荧光信号的叠加信号；通过扣背景光源对所述被测样品进行测试，得到第二荧光信号；所述第二荧光信号值为所述被测样品中干扰元素所产生的荧光信号；将所述第一荧光信号与第二荧光信号进行作差运算，得到所述目标元素的荧光信号。本发明通过增加扣背景光源，得到被测样品中干扰元素所产生的荧光信号，进而采用算法扣除干扰元素所产生的荧光信号，提高测试的准确率。

摘要： 本实用新型公开一种用于荧光光谱仪检测的自动送样装置和荧光光谱检测仪，包括：设置在荧光光谱仪本体内部的底板，底板围设在荧光光谱仪本体内检测窗口的外部；底板上设置有多个运动模组，多个运动模组与控制器连接；多个运动模组包括X轴运动模组、Y轴运动模组和Z轴运动模组；X轴运动模组与Y轴运动模组连接并驱动Y轴运动模组进行X方向往复移动；Y轴运动模组与Z轴运动模组连接并驱动Z轴运动模组进行Y方向往复移动；Z轴运动模组上设置有用于放置样品盘的框架并驱动框架进行Z方向往复移动；样品盘用于盛放样品；控制器用于通过X轴运动模组、Y轴运动模组和/或Z轴运动模组驱动样品盘进行空间运动，使得样品放置在检测窗口的上方。

摘要： 本实用新型提供了一种用于原子荧光光谱仪的气液分离器及原子荧光光谱仪，气液分离器包括分离器壳体以及制冷组件：分离器壳体开设有进气口、排液口和排气孔；制冷组件容置于分离器壳体内，且制冷组件与分离器壳体的内壁间隔设置，以形成制冷腔；制冷腔分别连通于进气口、排液口及排气孔。本实施例的气液分离器通过设置制冷组件，可以对进入气液分离器内的气液混合物进行制冷操作，从而提高气液分离效果。本实施例的原子荧光光谱仪中，通过设置上述气液分离器，可以有效防止原子化过程中的信号干扰，避免荧光猝灭现象的发生，从而降低原子荧光光谱仪检测信号的噪声，检测效果得以提高。