ICP-799 Inductively Coupled Plasma Emission Spectrometer

Product introduction

The ICP-799 inductively coupled plasma emission spectrometer has the characteristics of fast testing speed, wide measurement range, and accurate and reliable analysis results. Due to the use of computer technology, the intelligence of the instrument, the collection and processing of pictures and texts displayed on the screen, and data have all reached advanced levels, making it an ideal analytical instrument for many industries.

Application scope:

As a large precision analytical instrument, ICP spectrometer is widely used in

1. Metallurgical industry: steel and its alloys: including carbon steel, cast iron, alloy steel, high-purity steel, Si and SiFe alloys, ferroalloys, etc.

2. Non-ferrous metals and their alloys: including non-ferrous metals (high-purity metals) and their alloys, rare metals and their alloys, precious metals, rare earths (concentrates, roasted ores, oxides, carbonates, oxalates, chlorides, Fluoride, metal, alloy, NdFeB, local, and its alloys, compounds, etc.

3. Geological and mineral samples: geological samples, ores and minerals.

Detailed description and working principle

ICP plasma reflection spectrometer consists of monochromator, radio frequency generator, sample introduction system, photoelectric conversion, control system, data processing system, and analysis operation software. The plasma is generated in a triple concentric quartz torch. Argon gas is introduced into the torch in a tangential direction, and a copper load coil is wound around the upper part of the torch (cooling water is passed internally). When the high-frequency current generated by the high-frequency generator (operating frequency 40MHz and power about 1KW) passes through the coil, the surrounding The alternating magnetic field ionizes a small amount of argon gas to produce electrons and ions. Under the action of the magnetic field, it accelerates and collides with other neutral atoms to produce more electrons and ions. An eddy current is formed in the torch, and a plasma torch is formed under the action of the electric spark ( That is, plasma), the temperature of this plasma can reach more than 10,000K. The aqueous solution to be measured forms an aerosol through the sprayer and enters the central channel of the quartz torch. Atoms are ionized under the influence of external energy, but atoms in the excited state are very unstable. When they transition from a higher energy level to the ground state, they will release huge energy. This energy is radiated in the form of electromagnetic waves of a certain wavelength. Different elements produce different characteristic spectra. These characteristic spectra are projected onto the grating in the spectrometer through the lens. The calculation controls the stepper motor to rotate the grating. The transmission mechanism accurately positions the light intensity of the characteristic spectral line of the element to be measured after spectroscopy at the exit slit. The photomultiplier tube will The light intensity of the spectral line is converted into current, and then processed by the circuit and V/F conversion, the data is processed by the computer, and the analysis results are finally printed out by the printer.

Instrument features:

1) Using the latest electronic circuits, the power stability is better, the output power is automatically matched, and the power parameters are programmed;

2) Smaller size and lighter weight (the actual size of the instrument is 1500mm long × 590mm wide × 640mm high);

3) Excellent optical system and advanced control system ensure accurate peak positioning and excellent signal-to-background ratio;

4) Minimal matrix effect, high spectral line resolution, able to separate Hg313.154 and 313.183nm double spectral lines, and can separate iron quartet peaks;

5) Wide measurement range, analysis from ultra-trace to constant, dynamic linear range of 5-6 orders of magnitude; qualitative and quantitative analysis can be achieved;

6) The Rf output power range is 750-1600W, the output power stability is less than 0.1%, and the detection limit is low. The detection limit of most elements can reach the ppb level;

7) The negative high voltage of the photomultiplier tube can be independently adjusted within the range of 0-1000v, and the conditions can be set independently according to the different spectral lines of different elements, which has a better detection limit compared with full-spectrum instruments;

8) Good measurement accuracy, stability relative standard deviation RSD ≤ 1.5%, better than the national A-level standard.

9) The powerful and friendly human-machine interface analysis software can perform data processing, method preparation and result analysis during the measurement process. It is a true multi-tasking software; the software has powerful data processing functions and provides a variety of methods. Such as internal standard calibration, IECS and QC monitoring functions, etc., can obtain the best background subtraction point to eliminate interference; the output data can be printed directly or automatically generate a result report in Excel format, with lifetime free upgrades;

10) Use cymbal-copper shrapnel and specially treated shielding glass to absorb ultraviolet rays while keeping the instrument’s radiation to less than 2V/m. Use high shielding and good grounding to ensure operator safety.

11) Detect water pressure and air pressure at any time, and automatically protect when appropriate.

Machine technical indicators

(1) The analysis speed is fast. More than 15 elements can be scanned in one minute.

(2) Scanning range 4320r/mm Scanning range 180-442.5nm Full-band resolution <0.006nm

3600 lines/mm scanning range 180~530nm, full-band resolution <0.007nm

2400 lines/mm scanning range 180~800nm, full-band resolution ≤0.009nm

The method is a sine rod, driven by a computer-controlled pulse motor, with a minimum scanning step of 0.0003nm.

(3) Wavelength indication error and repeatability: Wavelength indication error: ≤± 0.02nm Repeatability ≤ 0.003nm

(4) Correlation coefficient ≥0.9998%

(5) Repeatability: Relative standard deviation RSD≤1.5%

(6) Stability: Relative standard deviation RSD≤2.0%

(7) Measuring range: ultra-trace to constant

(8) The detection limit is as low as ppb (ug/L) level (see Appendix 1 for the detection limits of some elements)

(9) There are many elements to be analyzed, and 70 kinds of metallic elements and some non-metallic elements (such as B, P, Si, Se, Te) can be quantitatively or qualitatively analyzed.

(10) Measurement method Sequential measurement

(11) Power 750W—1500W adjustable

ICP-799 Inductively Coupled Plasma Emission Spectrometer