Thermo Scientific iCAP ™ Q ICP-MS



1. Instrument application requirements

This instrument is required to be suitable for elemental analysis, isotope analysis, and elemental speciation analysis tasks of various samples in a wide range of application fields, meeting the requirements of environmental protection, food, geology, metal, biological sample, chemical material analysis, and so on.



2. Instrument working environment

2.1 Working environment temperature: 15-30 ℃

2.2 Working environment humidity:<80% (no condensation)

2.3 Power Supply: Single phase 200-240V, 50 Hz



3. Instrument hardware

3.1. Nebulizer: High efficiency concentric PFA atomizer, providing the best atomization efficiency and resistance to hydrofluoric acid injection.

3.2. Atomization chamber: A small volume swirl type atomization chamber with small dead volume, low memory effect, equipped with a semiconductor refrigeration device, with a temperature control range of -10~20 ℃ for precise control of the atomization chamber temperature, eliminating any drift caused by fluctuations in laboratory conditions, and improving the long-term stability of the instrument.

3.3. Detachable quartz torch tube with pre aligned torch tube seat with built-in gas path connection, no need for O-ring, easy to operate card type push in torch tube design, convenient for daily replacement and maintenance without dismantling gas pipeline.

3.4. Plasma visualization system: Equipped with Plasma TV function, it can monitor the plasma state in real time.

3.5. Interface: It has two different types of interface technologies, patented embedded design, high sensitivity mode, and high salt resistance mode. The sampling cone diameter is 1.1mm, and the cutting cone diameter is 0.5mm. The high salt resistance mode ensures the stability of long-term analysis of high salt samples; The high sensitivity mode can ensure that it meets the application requirements of high-throughput analysis or large injection volume for different types of samples.

3.6. The ICP part of the instrument host is equipped with a mass flow meter, which includes plasma gas, auxiliary gas, and atomization gas.

3.7. Vacuum system: It is required that the time from atmospheric pressure to a working vacuum degree be less than 15 minutes.

3.8. Ion source: self-excited all solid state RF generator with a frequency of 27.12 MHz. Adopting frequency conversion technology for fast matching, suitable for direct injection of organic reagents such as acetonitrile, without the need for additional expensive consumables such as shielding torches, extending the service life of the cone

3.9. Ion transport system: Low background ion transport design deflects the analyzed ions by 90 degrees, completely separating them from photons and non ionized neutral particles, ensuring the optimal analysis signal-to-noise ratio of the main quadrupole mass analyzer. The ion transport deflection lens, collision reaction cell, and quadrupole mass analyzer are all maintenance free.

3.10. Quadrupole material: Pure Mo material quadrupole, ensuring optimal mass axis stability.

3.11. Pulse simulation dual-mode simultaneous electron multiplier must be able to simultaneously complete scanning and peak hopping analysis (qualitative and quantitative analysis) in one injection process, and can automatically switch between simulation and pulse modes.

3.12. Plasma torch position adjustment: Three dimensional (X, Y, Z directions) position control is performed by computer-controlled stepper motors, with parameters stored in computer software.

3.13. Mass spectrometry range: 4-290 amu.

3.14. The collision reaction cell requires a quadrupole design with mass discrimination function, which can selectively remove interfering ions from entering the main quadrupole mass analyzer, ensuring the best interference removal effect at sufficiently high sensitivity. Configure 2 MFC mass flow meters, switch between collision pool conditions and standard conditions to fully automated, and use a single helium collision gas to be suitable for the vast majority of applications. It also supports other reaction gases (such as oxygen, hydrogen, ammonia, etc.) to enter the collision reaction pool simultaneously, and provides measurement results for all measurement modes in one analysis.

3.15. It has two modes of high resolution and standard resolution, and can set different resolutions for different elements in the same method. It is required that the fourth level rod automatically switches between different resolutions in one sample test. Please provide software demonstration pictures or literature proof.

3.16. 500W cold flame mode can be achieved without the need for shielding rings or other consumables. It is required to automatically switch between cold flame mode and standard mode in one sample analysis, ensuring that all analyzed elements in the sample (in two different modes) can be analyzed in one injection. In standard mode, there is no need to use collision reaction tanks or cold flame technology to ensure that the detection limit of the 56Fe method meets the international water quality analysis standard of less than 3ppb.

3.17. It is required to have oxygen collision reaction cell technology, which can simultaneously introduce oxygen and helium gas in the same method. Through the reactivity of oxygen, P and S elements can be reacted to PO47 and SO48 positions to obtain low content detection. The oxygen collision reaction cell can also be used to determine trace Cd in Mo matrix, as well as to analyze the transformation of As into AsO91 in complex matrix.



4. Software

4.1 Operating System: Renowned brand commercial computer, Microsoft ® Windows XP or Win7, multitasking, multi-user system software.

4.2 Fully automatic analysis function (starting and closing the instrument, adjusting the torch position, plasma parameters, ion lens, switching between standard plasma conditions and cold plasma conditions, switching between standard technology and collision pool technology, etc.)

4.3 Instantaneous signal analysis software including chromatography for use with chromatography or laser injection systems, etc. It can meet the functions of data collection, chromatographic integration calculation, report output, etc. in chromatographic coupling.

4.4 Real time data display and real-time report display.

4.5 Requirements for having intelligent software include: intelligent injection time and intelligent flushing time, QAQC software that can meet the QC requirements of EPA methods, and intelligent spectrum interpretation software

4.6 ICPMS operating software can be installed on personal computers, and sample analysis data can be processed offline using this software to generate reports.



5. Instrument performance requirements

5.1 Sensitivity in standard mode

5.1.1 Medium mass number (Y or In):>220 M cps/ppm

5.1.2 High quality quantity (Tl or U):>300 M cps/ppm

5.2 Random Background in Standard Mode (No Gas):<1 CPS (4.5), Random Background in He Mode:<0.5 CPS (4.5),

5.3 Under standard mode, instrument signal-to-noise ratio>220M (1ppm medium mass element solution, sensitivity/random background)

5.3.1 Oxide ions (CeO+/Ce+)<2%; Double charged particles (Ba++/Ba+)<3%.

5.4 Instrument detection limit (one of the advantageous indicators)

5.4.1 Lightweight elements:<0.5 ppt

5.4.2 Medium Quality Number Element:<0.1 ppt

5.4.3 High quality numerical elements:<0.1 ppt

5.5 Short term stability for 10 minutes (RSD):<2%.

5.6 Long term stability 2 hours (RSD):<3%. (4.7 Mass spectrometry calibration stability:<0.025 amu/8hr)