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HK-2000型原子發(fā)射光譜儀，是多元素順序測(cè)量的分析測(cè)試儀器。該儀器由掃描分光器、射頻發(fā)生器、試樣引入系統(tǒng)、光電轉(zhuǎn)換、控制系統(tǒng)、數(shù)據(jù)處理系統(tǒng)、分析操作軟件組成。等離子體是在三重同心石英炬管中產(chǎn)生。炬管內(nèi)分別以切向通入氬氣，炬管上部繞有紫銅負(fù)載線圈〈內(nèi)通冷卻水〉當(dāng)高頻發(fā)生器產(chǎn)生的高頻電流通過(guò)線圈時(shí)，其周?chē)a(chǎn)生交變磁場(chǎng)，使少量氬氣電離產(chǎn)生電子和離子，在磁場(chǎng)作用下加速運(yùn)動(dòng)與其它中性原子碰撞，產(chǎn)生更多的電子和離子，在炬管內(nèi)形成渦流，在電火花作用下形成等離子炬(即等離子體)，這種等離子體溫度可達(dá)10000k左右。
HK-2000 type plasma 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.
待測(cè)水溶液經(jīng)噴霧器形成氣溶膠進(jìn)入石英炬管中心通道。原子在受到外界能量的作用下電離，從較高能級(jí)躍遷到基態(tài)時(shí)，將釋放出巨大能量，這種能量是以一定波長(zhǎng)的電磁波的形式輻射出去。不同元素產(chǎn)生不同的特征光譜。這些特征光譜通過(guò)透鏡射到分光器中的光柵上，計(jì)算通過(guò)控制步進(jìn)電機(jī)轉(zhuǎn)動(dòng)光柵，傳動(dòng)機(jī)構(gòu)將分光后的待測(cè)元素特征譜線光強(qiáng)準(zhǔn)確定位于出口狹縫處，光電倍增管將該譜線光強(qiáng)轉(zhuǎn)變?yōu)殡娏�，再�?jīng)電路處理和v/f轉(zhuǎn)換后，由計(jì)算機(jī)進(jìn)行數(shù)據(jù)處理，最后由打印機(jī)打出分析結(jié)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, after dealing with the circuit and v/f conversion after the data processing by computer, finally the results printed by the printer.
技術(shù)參數(shù)：
Technical parameter:
1、分光器系統(tǒng)
1, optical splitter system
光學(xué)系統(tǒng)：czerny-turner光學(xué)系統(tǒng)焦距：1000mm;
Optical system: Czerny-Turner optical system focal length: 1000mm;
光柵刻線：3600條/mm或2400條/mm離子刻蝕全息光柵;檢測(cè)器：光電倍增管;
Grating: 3600 /mm or 2400 /mm ion etching holographic grating; detector: photomultiplier tube;
狹縫：入射狹縫20μm，出射狹縫25μm.
Slit: entrance slit 20 m, exit slit 25 mu m.
光柵刻線：3600條/mm 的分光系統(tǒng)波長(zhǎng)掃描范圍是190一500nm;
Grating: 3600 /mm optical wavelength scanning range is 190 500nm;
光柵刻線2400條/mm的分光系統(tǒng)波長(zhǎng)掃描范圍是190一850nm;
Grating with 2400 /mm optical wavelength scanning range is 190 850nm;
最小掃描步距0.0005nm;
Minimum scanning step 0.0005nm;
反射鏡：凹型。
Mirror: concave.
2、高頻電源
2, high frequency power supply
電路類(lèi)型：自激式振蕩電路;頻率：40.68MHz;功率：800一1200W可調(diào);功率穩(wěn)定度：0.3%;電源：220V 25A。
Circuit type: self excited oscillation circuit; frequency: 40.68MHz; power: 800 a 1200W adjustable; power stability: 0.3%; power: 25A 220V.
3、進(jìn)樣系統(tǒng)
3, sampling system
炬管部分：石英炬管采用三重同心式，外徑20mm;霧室雙筒型，外徑35mm 霧化器采用同軸型霧化器，外徑6mm;觀察位置：縱向觀察高低和橫向觀察前后，可通過(guò)軟件直觀地調(diào)整為最佳;氣體控制：99.99%純氬氣通過(guò)壓力表輸出;冷卻氣流量計(jì)100一1000L/h，輔氣流量計(jì)10一100L/h，載氣流量計(jì)10一100L/h，載氣壓力表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 100 1000L/h, auxiliary gas flow meter of 10 100L/h, a 10 100L/h carrier gas flowmeter, carrier gas pressure gauge 0.4MPa.
主要特點(diǎn)：
Main features:
采用優(yōu)良的光學(xué)系統(tǒng)，先進(jìn)的電子控制系統(tǒng)，關(guān)鍵部件采用進(jìn)口元器件，保證了定位準(zhǔn)確，信背比高，確保儀器的精確度和靈敏度。
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.
測(cè)量范圍：超微量到常量的分析。
Measurement range: ultra micro to constant analysis.
測(cè)量精度：RSD≤1.5%。
Measurement accuracy: RSD = 1.5%.
穩(wěn)定性：RSD≤2.0%。
Stability: RSD = 2%.
分析元素多達(dá)72種元素。
Analysis of elements as many as 72 elements.
檢出限低：ppb級(jí)。
Low detection limit: ppb level.
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