Performance characteristics of atomic fluorescence total analysis
Suitable for trace analysis of elements such as arsenic, mercury, selenium, lead, germanium, tin, antimony, bismuth, cadmium, tellurium, zinc, gold, etc. in samples.
Simultaneous measurement of two elements in two channels.
The built-in intermittent flow sampling device is used in combination with an imported injection pump and a peristaltic pump, and a new closed three-stage gas-liquid separation device is adopted to effectively reduce the water vapor content entering the detector, ensuring long-term stability of the instrument without the need for liquid addition.
● Light source: adopting a fixed four lamp position design, using hollow cathode lamps, evenly distributed around the atomizer in a flat fan-shaped manner, and capable of preheating four element lamps simultaneously, using pulse power supply automatic control mode.
● Light source system: Fixed four channel short focal length lens focusing, non dispersive fully enclosed optical system, and equipped with a device to remove stray light.
Adopting an efficient surge gas-liquid separation device, the chemical reaction is more complete and the gas-liquid separation effect is better.
● Fully automatic and intelligent operation, disc automatic sampler, with up to 183 positions per sample disc, supporting semi-automatic measurement mode, and having automatic cleaning of the injection needle function.
The instrument can achieve single point configuration of working curves and automatically dilute high concentration samples.
Adopting argon hydrogen flame and shielded quartz furnace low-temperature atomizer to reduce fluorescence quenching and gas-phase interference, and improve atomization efficiency.
Gas system: equipped with automatic gas protection device, capable of automatically controlling the gas path and conducting automatic diagnosis.
The circuit system adopts strong and weak current separation and high integration circuit design.
The software can quickly import measurement data into EXCEL and achieve network resource sharing. The software has customer information and permission management functions, as well as testing data operation tracking functions to ensure data security and traceability; Support one click fully automatic operation; Support measuring data while printing reports; Support the import and export of sample information ECXEL; Support blank deduction for multiple samples; Support multiple curve fitting; Storage and stacking of instrument peak shapes; Linear real-time fitting of standard curve; Zero point participation in fitting. Dedicated Windows/2000/7/8 operating software with a powerful expert online assistance system.
Performance characteristics of morphological analysis section
Can perform morphological analysis on elements such as arsenic, mercury, selenium, antimony, etc. in the sample.
The fully automatic UV digestion unit has two modes: UV and no UV. It automatically switches the UV digestion lamp and valve through a specially designed flow path, making it easy to switch without changing the flow path.
Adopting a miniature dual high pressure binary liquid phase pump: including a dedicated liquid chromatography injection and separation system and corresponding color light coupling interface.
The morphology preprocessing section has a separate continuous flow vapor generation system, separate from the fluorescence detector (total analysis), and automatically switches between total and morphology analysis The morphological preprocessing part is mechanically integrated with the liquid-phase separation device.
The independent element morphology analysis and processing device adopts an integrated design, including digestion, separation, column temperature box, column temperature control, reaction system, and peristaltic pump system.
● It can achieve integrated control of the whole machine through a computer.
The online digestion device avoids the broadening of peak shape behind the column and improves the analytical performance of the instrument.
Stable temperature control of the column improves the separation efficiency of the chromatographic column.
Adopting a new type of dual H integrated ultraviolet lamp and a new material ultraviolet digestion tube, the digestion efficiency is significantly improved.
The data acquisition of atomic fluorescence can be output in analog signal mode, and the data processing can be directly connected to various general-purpose chromatographic workstation software.
After liquid chromatography injection, the six way valve is triggered, and the workstation automatically collects data. The spectrum is recorded completely and the peak time is consistent.
Equipped with dedicated chromatography spectroscopy detection software, it can achieve total or form detection. The software can control the atomic fluorescence part, as well as reverse control the liquid chromatography and liquid phase automatic sampler parts.
● It can achieve integrated control of the whole machine.
The data processing system can be paired with a general-purpose chromatography workstation.
Equipped with a capture trap device, it can effectively adsorb harmful exhaust gases emitted by the instrument.
UV digestion device: Add an inner wall coating reflective device that utilizes ultraviolet light and has an anti UV leakage device to protect the human body from damage.
Technical indicators for atomic fluorescence total analysis
Detection limit (D.L): As, Pb, Se, Bi, Sn, Sb, Te,<0.01ng/mL
Hg、Cd<0.001ng/mL、Ge<0.05ng/mL、
Zn<1.0ng/mL、Au<3.0ng/mL
Precision ≤ 0.8%
Linear range: greater than three orders of magnitude.
Morphological analysis technical indicators
Minimum detectable concentration (ng/mL):
As(Ⅲ)<2.0; DMA<4.0; MMA<4.0;
As(Ⅴ)<10.0; Analysis time<10 minutes
Hg(II)<0.5; MeHg<0.5; EtHg<0.5; PhHg<1; Analysis time<15 minutes
Precision ≤ 5.0%
● Linear range of three orders of magnitude or more
● Correlation coefficient:> zero point nine nine nine
Patent technology:
Dual Chemical Reaction System of New Liquid Chromatography Atomic Fluorescence Coupled Instrument ZL 2014202805532
Liquid Chromatography Atomic Fluorescence Coupled Instrument Analysis Function Switching Device ZL 2014202805509