台式 ICP光谱仪组成及工作原理

　　The composition and working principle of desktop ICP spectrometer

　　ICP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、分析操作软件组成。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(工作频率40MHz功率1.2KW左右)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以上。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，但处于激发态的原子十分不稳定，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。

　　ICP spectrometer is an analytical and testing instrument for multi-element sequential measurement. The instrument consists of a scanning spectrometer, a radio frequency generator, a sample introduction system, a photoelectric conversion, a control system, a data processing system, and an analysis software. The plasma is in three concentric quartz torch produced. The torch tube respectively in the tangential direction by argon gas, the torch tube wound with copper upper load coil cooling water in < > when the high-frequency current generator generates high frequency (frequency 40MHz power 1.2KW) through the coil, the alternating magnetic field generated around, so that a small amount of argon ionized electron and ion acceleration, and other neutral atomic collisions in a magnetic field, generated more electrons and ions, forming a vortex in the torch tube, forming a plasma torch in EDM (plasma), under the action of the plasma temperature can reach more than 10000K. The measured solution by spray forming the aerosol into the quartz torch center channel. Ionization of atoms in the outside world under the action of the energy, but the atoms is very unstable, from higher level transitions to the ground state, will release enormous energy, this energy is in the form of electromagnetic radiation of a certain wavelength. Different characteristics of different elements. 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.

　　二、台式 ICP光谱仪技术指标

　　Two, desktop ICP spectrometer technical indicators

　　1.射频发生器(RF)

　　1 radio frequency generator (RF)

　　(1) 电路类型：自激振荡电路，全自动点火，所有功能实现电脑软件控制(点火、熄火、功率等参数设置);实时功率控制;自动匹配调谐;光室恒温;

　　(1) circuit type: self oscillation circuit, full automatic ignition, all functions to achieve the computer software control (ignition, extinction, power and other parameters); real-time power control; automatic matching tuning; room temperature;

　　(2) 工作频率：40.68MHZ±0.05%

　　(2) operating frequency: 40.68MHZ + + 0.05%

　　(3) 频率稳定性：<0.1%

　　(3) frequency stability: <0.1%

　　(4) 输出功率：700-1600w

　　(4) output power: 700-1600w

　　(5) 输出功率稳定性：≤0.3%

　　(5) the stability of output power is less than or equal to 0.3%:

　　(6) 电磁场泄漏辐射强度：距机身300mm 电场强度E:<2V/m

　　(6) electromagnetic radiation leakage intensity: from the fuselage 300mm electric field strength E:<2V/m

　　2.进样装置:

　　2 sampling device:

　　(1) 输出工作线圈内径25mm，3匝

　　(1) output coil inner diameter 25mm, 3 turns

　　(2) 炬管：外径20mm的石英炬管

　　(2) the torch tube: Quartz torch 20mm diameter tube

　　(3) 同轴型喷雾器外径6mm

　　(3) the diameter of coaxial sprayer 6mm

　　(4) 双筒形雾室外径35mm

　　(4) the outer diameter of the double drum fog chamber 35mm

　　(5) 氩气流量计规格和载气压力表规格：

　　(5) specifications for argon gas flow meters and gas carrying pressure gauges:

　　①、 等离子体流量计(100-1000)L/h ;(1.6-16L/min)

　　Plasma flowmeter (100-1000) L/h; (1.6-16L/min)

　　②、 辅助气流量计(6-60)L/h ;(0.1-1L/min)

　　Auxiliary gas flow meter (6-60) L/h; (0.1-1L/min)

　　③、 载气流量计(6-60)L/h ;(0.1-1L/min)

　　Carrier gas flowmeter (6-60) L/h; (0.1-1L/min)

　　④、 载气稳压阀(0-0.4MPa)

　　Fourth, the carrier gas regulator valve (0-0.4MPa)

　　仪器内设氩气二次稳压阀(0.3MPa)

　　The instrument is equipped with argon two pressure regulator (0.3MPa)

　　3.测光装置:

　　3 metering device:

　　(1) 光电倍增管规格： R212UH

　　(1) photomultiplier tube specification: R212UH

　　(2) 光电倍增管负高压：200-1000V ，稳定性<0.05%

　　(2) photomultiplier tube negative pressure: 200-1000V, stability <0.05%

　　(3) 光电倍增管电流测量范围：10-12 -10-4A

　　(3) photomultiplier tube current measurement range: 10-12 -10-4A

　　(4) 信号采集为V/F交换：1mV对应100Hz

　　(4) signal acquisition for V/F exchange: 1mV corresponds to 100Hz

　　4.分光器:

　　4 light splitter:

　　(1) 光路: Czerny-Turner

　　(1) optical path: Czerny-Turner

　　(2) 焦距: 1000mm

　　(2) focal length: 1000mm

　　(3) 光栅规格：离子刻蚀全息光栅，刻线密度3600线/mm，

　　(3) specifications: ion etching grating holographic grating groove density 3600 line /mm,

　　刻线面积: 80×110mm，线色散率倒数：0.26nm

　　Line area: 80 x 110mm, reciprocal dispersion line: 0.26nm

　　(4) 波长范围：190-500nm

　　(4) wavelength range: 190-500nm

　　(5) 分辨率: ≤0.008nm

　　(5) resolution: 0.008nm

　　(6) 扫描波长范围3600线/mm 扫描波长范围：190-500nm

　　(6) scanning wavelength range of 3600 lines /mm scanning wavelength range: 190-500nm

　　(7) 步进电机驱动最小步距：0.0006nm

　　(7) stepper motor drive minimum step: 0.0006nm

　　(8) 入射狭缝：20μm 出射狭缝：25μm

　　(8): 20 m entrance slit and exit slit: 25 m

　　(9) 发射镜规格：(78 × 105 × 16)mm

　　(9) specification of transmitting mirror: (78 x 105 x 16) mm

　　(10) 透镜ф30，1：1成像

　　(10) Phi 30 1:1 imaging lens.

　　?5.应用行业分类

　　5 Application Industry Segmentation

　　1、金属类

　　1, metal

　　钢铁：包括碳素钢、铸铁、合金钢、高纯铁、铁合金、硅铁、锰铁、钒 铁、 铁矿石，铅的冶炼等。

　　Steel: steel, cast iron, alloy steel, Gao Chuntie, iron alloy, ferrosilicon, ferromanganese, vanadium iron, iron ore, lead smelting.

　　2、有色金属分析：

　　2, non-ferrous metal analysis:

　　纯铜，纯铝和合金中的杂质元素分析。

　　Pure copper, pure aluminum alloy and analysis of impurity elements in.

　　贵金属的纯度分析：Au、Ag、Pt、Pd、Ir、Rh、Os、Ru。

　　Analysis of the purity of precious metals: Au, Ag, Pt, Pd, Ir, Rh, Os, Ru.

　　3、环境检测类

　　3, environmental testing

　　水质分析：矿泉水、自来水、河水、海水、污水、废水等。

　　Water quality analysis: mineral water, tap water, river water, sea water, sewage, waste water, etc..

　　食品分析：包括食品、饮料等。

　　Food analysis: including food, beverages, etc..

　　土壤成份分析：生物和植物样品的分析。

　　Analysis of soil composition: analysis of biological and plant samples.

　　4、稀土材料和稀土永磁类

　　4, rare earth materials and rare earth permanent magnet

　　稀土元素全分离，此仪器高分辨率非常适合稀土元素的分析。

　　The separation of rare earth elements is very suitable for the analysis of rare earth elements.

　　稀土永磁材料中对钕铁硼材料的配分和成份的分析。

　　Analysis of the distribution and composition of NdFeB materials in rare earth permanent magnetic materials.

　　5、地质矿物的分析

　　5, geological mineral analysis

　　精选矿的分析、普查找矿分析

　　Analysis of mineral exploration and prospecting of ore selection

　　6、食品医药分析

　　6, food and pharmaceutical analysis

　　食品中有益、有害元素的分析、药材中的微量元素分析

　　Analysis of beneficial and harmful elements in food and trace elements in medicinal materials

　　三、台式 ICP光谱仪整机技术指标

　　Three, desktop ICP spectrometer technical indicators

　　测量波长范围：

　　Measuring wavelength range:

　　180-500nm 3600L/mm光栅

　　180-500nm 3600L/mm grating

　　180-800nm 2400 L/mm光栅

　　180-800nm 2400 L/mm grating

　　2.测量精度(重复性)：平均相对标准偏差RSD≤1%

　　2 measurement precision (repeatability): the average relative standard deviation is less than 1% RSD

　　3.测量稳定性：平均相对标准偏差RSD≤2

　　3 measuring stability: the average relative standard deviation is less than 2 RSD

　　4.检出下限：亚PPb级

　　4 detection limit: sub PPb level

　　四、安装条件

　　Four, installation conditions

　　1、仪器正常工作条件：实验室内清洁、干燥、无灰尘、无振动。室温保持 为22℃±3℃

　　1, the normal working conditions of the instrument: clean, dry, no dust, no vibration in the laboratory. Room temperature maintained at 22 degrees C + + 3

　　2、房间：15平米左右为宜，配有标准溶液试剂柜，电脑桌、电脑椅，空调1.5 —2匹。

　　2, room: about 15 square meters is appropriate, with standard solution reagent cabinet, computer desk, computer chair, air conditioning 1.5 - 2.

　　3、电源：220V，22A，使用4平方的电线。

　　3, power supply: 220V, 22A, the use of 4 square wire.

　　4、接地：为了安全和仪器的稳定，必须有高频接地，用300×300×3mm的紫铜 板埋于地下1.5米深处，用宽30×0.5mm的紫铜带接到主机的机壳上。

　　4, ground: for safety and stability of the instrument, there must be a high frequency ground, with 300 x 300 x 3mm copper plate buried 1.5 meters underground, a width of 30 * 0.5mm to a host of the copper belt.

　　5、排风：要求在主机上方安装排风筒，外接烟囱并用排风扇将ICP燃烧后的废 气排到室外。

　　5, exhaust requirements in the host is installed above the exhaust tube, external chimney and exhaust fan for the exhaust gas after combustion to discharge ICP.

　　6、氩气：可使用普通氩气99.99%即可

　　6, argon: ordinary argon can be used 99.99%

　　五、保修：

　　Five, warranty:

　　北京中晔仪元科技有限公司将提供12个月的保修期, 自签字验收之日起计 算，但不超过发货之日起15个月. 在保修期期内，北京中晔仪元科技有限公 司免费维修，由于非甲方人为因素造成仪器故障及损坏，即由乙方免费负责 解决(消耗品除外);

　　Beijing ye ie-tech Co. Ltd will provide the warranty period of 12 months, counting from the date of signing the acceptance, but not more than 15 months from the date of delivery. In the warranty period, Beijing ie-tech Co. Ltd. Ye free maintenance, equipment failure and damage caused by the non party human factors. Party B is responsible for solving free (except consumables);

　　六、台式 ICP光谱仪售后服务：

　　Six, desktop ICP spectrometer after-sales service:

　　在收到用户的要求维修书面通知的3小时内，北京中晔仪元科技有限公司 的技术人员做出响应如果需要赶赴用户工作现场，技术人员将在收到 书面通知的2个工作日内到达用户工作地。

　　After receiving the written notice of the maintenance requirements of users within 3 hours, if you need to respond to user work on-site technical staff in Beijing ye ie-tech Co. Ltd., technical staff will work to reach users within 2 working days of receipt of the written notice within the.