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ICP原子发射光谱仪特点详解Detailed characteristics of ICP atomic emission spectrometer
www2138com官网:0 发布时间:2016-11-02
 

HK-2000型等离子体单道扫描光谱仪,是多元素顺序测量的分析测试仪器。该仪器由扫描分光器、射频发生器、试样引入系统、光电转换、控制系统、数据处理系统、分析操作App组成。等离子体是在三重同心石英炬管中产生。炬管内分别以切向通入氩气,炬管上部绕有紫铜负载线圈〈内通冷却水〉当高频发生器产生的高频电流通过线圈时,其周围产生交变磁场,使少量氩气电离产生电子和离子,在磁场作用下加速运动与其它中性原子碰撞,产生更多的电子和离子,在炬管内形成涡流,在电火花作用下形成等离子炬(即等离子体),这种等离子体温度可达10000k左右。

HK-2000 type plasma single channel scanning spectrometer, is the analysis and testing instrument of multi element sequential measurement. The instrument is composed of a scanning optical splitter, a radio frequency generator, a sample introduction system, a photoelectric conversion, a control system, a data processing system and an analysis operation software. The plasma is in three concentric quartz torch produced. The torch tube respectively in the tangential direction by argon gas, the torch tube upper around copper coil load "in cooling water. When the high frequency generator generates a high-frequency current through the coil, the alternating magnetic field generated around, so that a small amount of argon ionized electrons and ions in the magnetic field accelerated motion and other neutral atom collisions. To produce more electrons and ions, the formation of vortex in the torch tube, forming a plasma torch in EDM (plasma), under the action of the plasma temperature can reach about 10000K.

待测水溶液经喷雾器形成气溶胶进入石英炬管中心通道。原子在受到外界能量的作用下电离,从较高能级跃迁到基态时,将释放出巨大能量,这种能量是以一定波长的电磁波的形式辐射出去。不同元素产生不同的特征光谱。这些特征光谱通过透镜射到分光器中的光栅上,计算通过控制步进电机转动光栅,传动机构将分光后的待测元素特征谱线光强准确定位于出口狭缝处,光电倍增管将该谱线光强转变为电流,再经电路处理和v/f转换后,由计算机进行数据处理,最后由打印机打出分析结果。

The measured solution by spray forming the aerosol into the quartz torch center channel. When the atom is ionized by the action of the external energy, the energy is released from the higher energy level to the ground state, and the energy is radiated by the form of electromagnetic wave at a certain wavelength. Different elements have different characteristic spectra. The spectral characteristics of shot splitter grating in the lens through the calculation, control the stepper motor rotates through the grating, the transmission mechanism will light after the measured spectral line intensity is accurately located in the exit slit, photomultiplier tube of the spectral line intensity into the current, then processed by the circuit and V / after f conversion, data processing by computer, finally the results printed by the printer.

技术参数:

Technical parameter:

1、分光器系统

1, optical splitter system

光学系统:czerny-turner光学系统焦距:1000mm;

Optical system: Czerny-Turner optical system focal length: 1000mm;

光栅刻线:3600条/mm或2400条/mm离子刻蚀全息光栅;检测器:光电倍增管;

Grating: 3600 / mm or 2400 / mm ion etching holographic grating; detector: photomultiplier tube;

狭缝:入射狭缝20μm,出射狭缝25μm.

Slit: entrance slit 20 m, exit slit 25 mu m.

光栅刻线:3600条/mm 的分光系统波长扫描范围是190一500nm;

Grating line: 3600 / mm optical wavelength scanning range is 190 500nm;

光栅刻线2400条/mm的分光系统波长扫描范围是190一850nm;

Grating 2400 / mm optical wavelength scanning range is 190 850nm;

最小扫描步距0.0005nm;

Minimum scanning step 0.0005nm;

反射镜:凹型。

Mirror: concave.

2、高频电源

2, high frequency power supply

电路类型:自激式振荡电路;频率:40.68MHz;功率:800一1200W可调;功率稳定度:0.3%;电源:220V 25A。

Circuit type: self excited oscillation circuit; frequency: 40.68MHz; power: 800 a 1200W adjustable; power stability: 0.3%; power: 25A 220V.

3、进样系统

3, sampling system

炬管部分:石英炬管采用三重同心式,外径20mm;雾室双筒型,外径35mm 雾化器采用同轴型雾化器,外径6mm;观察位置:纵向观察高低和横向观察前后,可通过App直观地调整为最佳;气体控制:99.99%纯氩气通过压力表输出;冷却气流量计100一1000L/h,辅气流量计10一100L/h,载气流量计10一100L/h,载气压力表0.4MPa。

The torch tube part: Quartz torch with three concentric, diameter 20mm; double cylinder type spray chamber, the diameter of 35mm atomizer using coaxial type atomizer, the diameter of 6mm; observe the position: longitudinal and transverse observation level of observation, the software can directly adjust for best; gas control: 99.99% pure argon output through a pressure gauge; the cooling air volume of 100 1000L / h, auxiliary gas flow meter of 10 100L / h, the carrier gas flowmeter 10 100L / h, the carrier gas pressure gauge 0.4MPa.

主要特点:

Main features:

采用优良的光学系统,先进的电子控制系统,关键部件采用进口元器件,保证了定位准确,信背比高,确保仪器的精确度和灵敏度。

Using excellent optical system, advanced electronic control system, the key components of imported components, to ensure that the positioning accuracy, high precision, to ensure the accuracy and sensitivity of the instrument.

测量范围:超微量到常量的分析。

Measurement range: ultra micro to constant analysis.

测量精度:RSD≤1.5%。

Measurement accuracy: RSD = 1.5%.

稳定性:RSD≤2.0%。

Stability: RSD = 2%.

分析元素多达72种元素。

Analysis of elements as many as 72 elements.

检出限低:ppb级。

Low detection limit: ppb level.


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