AFS-681 intelligent atomic fluorescence spectrometer Introduction
The AFS-681 reduces the excitation angle of the light source and the PMT based on the original model, which not only increases the intensity of the received fluorescent signal, but also reduces the background interference, thereby improving the sensitivity of the instrument.
The instrument front door with translucent and corrosion-resistant ABS magnetic structure avoids the circumvention of external air, and the chemical reaction of the test process can be observed online.
The shunt signal control module is added to the circuit. When the two channels are simultaneously measured, even if the concentration of the two elements measured in the sample is very different, the inter-channel interference can be ensured. It is especially suitable for the inspection department where the sample volume is large and the two channels are simultaneously measured.
AFS-681 atomic fluorescence spectrophotometer is widely used in teaching research, health and epidemic prevention, medical clinical inspection, drug inspection, food hygiene inspection, urban water supply and drainage inspection, agricultural product inspection, beverage inspection, environmental protection monitoring, cosmetics inspection, metallurgical sample inspection, geology In the census and other industries, innovative software and hardware design ensure the accuracy, safety and ease of use of sample analysis, and the instrument maintenance is simple and convenient. Feature
*Double-channel two elements can be measured simultaneously, suitable for trace analysis of twelve elements such as arsenic, mercury, selenium, tin, lead, antimony, bismuth, antimony, bismuth, cadmium, zinc and gold.
*Air core cathode lamp adopts new pulse modulation/constant current drive mode
* Use intermittent flow sampling device. (The sample blanks are alternately introduced to avoid cross-contamination of the sample to ensure measurement accuracy.) With a carrier gas steady flow device, the bubbles generated by potassium borohydride can be eliminated online, and the diffusion effect between reagents can be reduced, and the stability of the instrument can be improved. The cathode lamp adopts the coding technology, the instrument automatically recognizes the air core cathode lamp, and can monitor the working state and service life of the air core cathode lamp. The high-efficiency inrush two-stage chemical gas-liquid reaction separation device is adopted, and the chemical reaction is more complete, and the gas-liquid separation effect is obtained. Better, especially suitable for the determination of complex samples such as rock and minerals
* Adopting new air-saving gas path design, it can control the gas source at any time, save argon gas consumption and reduce the operating cost of the instrument. The instrument circuit adopts strong and weak electricity separation and the latest high-concentration module and steady flow separation gas path generating device. The new type of gas-saving gas path design can control the gas source at any time, saving argon gas consumption and reducing the operating cost of the instrument.
*Using a closed quartz atomizer. The instrument uses a low temperature furnace atomizer
* With external filter argon hydrogen flame real-time observation window, can directly observe the flame state in real time
Technical Parameters
Sample atomization
*Atomizer: Hydrogenation Shielding Atomizer
* Carrier gas / shielding gas: argon
Sample preparation and introduction
*Steam: a new type of intermittent flow without residual vapor generation reaction system, the reaction efficiency is higher
*Hydride generator: It adopts high-efficiency inrush two-stage chemical gas-liquid reaction separation device, which has more complete chemical reaction and better gas-liquid separation effect. It is especially suitable for the determination of complex samples such as rock and minerals.
* Peristaltic pump: 6-channel peristaltic pump with two pressure-adjustable pressure tube clamps, software speed control
*Exhaust system: unique pressure self-balancing waste liquid removal function, no additional pump waste
Optical system
* Optical design: short focal length, non-dispersive, integrated closed optical design
* Dual channel: two channels and two elements can be measured simultaneously
*Light source: The air core cathode lamp adopts coding technology, the instrument automatically recognizes the air core cathode lamp, and can monitor the working state and service life of the air core cathode lamp.
*Detector: using imported photomultiplier
*Linear range: greater than three orders of magnitude
Autosampler
* Sample introduction: continuous flow injection method of patented technology
* Sample processing capability: It takes only 30 seconds to test a sample three times.
Element detection performance
* Detection limit (D.L.): As, Se, Pb, Bi, Sb, Te, Sn< 0.03μg/L
Hg, Cd<0.005μg/L
Ge<0.1μg/L
Zn<1.0μg/L
Au<3.0μg/L
* Precision (RSD): ≤1.0%. Linear range: greater than three orders of magnitude
Data processing system:
* Free offline / connected machine work. Single / multi-window open. Single / multiple database optional. Further improve the measurement accuracy of the management sample correction. Unrestricted report format layout, measurement data can be switched to EXCEL for repair Measurement data can be shared through the LAN
Introduction
The AFS-681 reduces the excitation angle of the light source and the PMT based on the original model, which not only increases the intensity of the received fluorescent signal, but also reduces the background interference, thereby improving the sensitivity of the instrument.
The instrument front door with translucent and corrosion-resistant ABS magnetic structure avoids the circumvention of external air, and the chemical reaction of the test process can be observed online.
The shunt signal control module is added to the circuit. When the two channels are simultaneously measured, even if the concentration of the two elements measured in the sample is very different, the inter-channel interference can be ensured. It is especially suitable for the inspection department where the sample volume is large and the two channels are simultaneously measured.
AFS-681 atomic fluorescence spectrophotometer is widely used in teaching research, health and epidemic prevention, medical clinical inspection, drug inspection, food hygiene inspection, urban water supply and drainage inspection, agricultural product inspection, beverage inspection, environmental protection monitoring, cosmetics inspection, metallurgical sample inspection, geology In the census and other industries, innovative software and hardware design ensure the accuracy, safety and ease of use of sample analysis, and the instrument maintenance is simple and convenient.
