AFS–3100原子荧光光度计联机异常故障排除

介绍了北京海光仪器公司生产的AFS–3100原子荧光光度计在使用过程中仪器与电脑通讯失败的故障原因及排除方法。     

掌上分光光度计的开发及应用

基于Arduino技术,利用AS7341传感器、全彩 LED灯珠、聚光透镜、蓝牙芯片搭配3D打印技术设计出一款掌上分光光度计。介绍了掌上分光光度计的应用实例:对不同颜色的食用色素标准液进行测定,在测定范围内,吸光度与待测样品浓度具有良好的线性拟合关系;运用于菠菜中铁元素含量的测定,所得实验数据具有良好的一致性;运用于绘制待测溶液的吸光度时间曲线,取得了良好的实验效果。结果表明自制的掌上分光光度计完全可以代替传统的分光光度计,且进一步拓展了分光光度计的功能。     

电导滴定的联机测试

提出把电导滴定所用仪器和ＰＣ机组成联机测试装置，使用专门设计的程序采集滴定数据和动态显示滴定曲线，滴定完毕，计算机在数分钟内完成全部的数据处理和保存，并打印输出测试结果。这种联机方式，数据采集与处理直观迅速，且采集之电导数据精度明显提高。平行测试９个样品的结果相对标准偏差一般在０．３０％以下。     

单光束近红外分光光度计

公开号:CN101368901公开日:2009.02.18申请人:上海欣茂仪器有限公司摘要本发明属于一种分析仪器,单光束近红外分光光度计。它由外壳、底板、光源、单色器、样品吸收池、检测装置、信号指示装置组成,光束经出口狭缝后,单光束进入滤光片、透镜、比色皿、透镜,然后进入低温恒温硫化铅接收器(-10℃)。本发明的优点是:体积小,成本低,价格便宜,操作容易,无电、热飘移,稳定性好,检测结果准确。单光束近红外分光光度计     

722型光栅分光光度计故障分析与排除

介绍了722型光栅分光光度计常见故障分析与排除方法及注意事项。     

荧光分光光度计的功能开发

固、液体吸收光谱测量的附件是由光阑、负透镜、全反射棱镜，吸收不也组成的光学系统，将它配置到进口荧光分光光度计上，可以扩展其功能，使其具有紫外分光光度计（ＵＶ）的功能，能够测量固体、液体样品的透射光谱和吸收光谱。     

Ein neues Spectrophotometer

Ohne Zusammenfassung     

扫描记录式分光光度计的数字化升级改造

用４８６计算机、数据采集Ａ／Ｄ卡,Ｃ语言编写运行程序,取代Ｘ－Ｙ记录仪,实现扫描记录式分光光度计的数字化改造。     

Ein neues Spectrophotometer

Ohne Zusammenfassung     

Spectrophotometer Determination of Nitrite Using Salbutamol sulphate as a Reagent

Abstract

A simple spectrophotometric method for the trace determination of nitrite (NO^? ₂) is described. Nitrite is reacted with Salbutamal sulphate in acidic medium which gives a yellow colour in alkaline medium (?pH 7) and can be determined in the presence of several cations and anions. Beer's law is obeyed in the range of 1.8 to 27.6 ppm of nitrite with the molar absorptivity 1.8 × 10³ 1 × mole^?1 × cm^?1 at 4l0 nm. The proposed method can also be utilized for the determination of nitrate (NO^? ₃) after its reduction to nitrite. The method has been applied for the determination of various samples containing traces of nitrite.     

Construction and Evaluation of a LEGO Spectrophotometer for Student Use

A simple visible-wavelength spectrophotometer has been constructed for educational purposes. The spectrophotometer contains simple, inexpensive components students can easily work with (small flashlight bulbs, batteries, etc.) and uses LEGO pieces for construction of the optical support elements. The spectrophotometer was designed to give students hands-on experience with typical spectrophotometer modules so that they may understand the important stages in the design of a scientific instrument. The spectrophotometer was characterized by examining an absorption spectrum and calibration curves of potassium permanganate.     

Ein Spectrophotometer mit Lummer-Brodhun'schem Prismenpaar

Ohne Zusammenfassung