AFS-681 Intelligent Atomic Fluorescence Spectrometer

1. Product Introduction

AFS-681On the basis of the original model, the light source has been reducedPMTThe excitation angle increases the intensity of the received fluorescence signal and reduces background interference, thereby improving the sensitivity of the instrument.

Adopting semi transparent and corrosion-resistant materialsABSThe front door of the magnetic structure instrument avoids the interference of external air circulation and allows for online observation of chemical reactions during the testing process.

Adding a split signal control module to the circuit ensures no inter channel interference even when there is a significant difference in the concentration of the two elements measured in the sample during dual channel simultaneous measurement. Especially suitable for testing departments with large sample sizes and simultaneous dual channel measurements.

AFS-681The Type A atomic fluorescence spectrophotometer is widely used in industries such as teaching and research, health and epidemic prevention, medical clinical testing, drug testing, food hygiene testing, urban water supply and drainage testing, agricultural product testing, beverage testing, environmental monitoring, cosmetics testing, metallurgical sample testing, geological survey testing, etc. The innovative software and hardware design ensures the accuracy, safety, and ease of use of sample analysis, and the instrument maintenance is simple and convenient.

2. Instrument features

*Dual channel two elements can be measured simultaneously,Suitable for trace analysis of twelve elements including arsenic, mercury, selenium, tin, lead, bismuth, antimony, tellurium, germanium, cadmium, zinc, gold, etc. in samples

*Hollow cathode lamp adopts new pulse modulation/Constant current drive power supply mode

Interference and elimination methods

（1）Fe、Al、Mg、Ca、K、Na、Cu、Pb、Li、Rb、Cs、Mn、W、Mo、V、Sr、Ti、Sn、Ba、Ti、Cd、Co、Ni、Cr、Ge、Ga、InDo not interfere with the measurement.

（2）Can form hydride elementsAs、Sb、Binot more than500μg/mLGenerally does not interfere with the measurement.

（3）Au<5μg/mL，Ag<25μg/mLDo not interfere with the measurement.

（4）Au、Ag、PtandPdWhen there is interference from other elements, thiourea can be added to eliminate the interference of precious metals and reduceKBH4The concentration or addition of iron salts can also alleviate the interference of the above elements.

Hydride generation system

Adopting a multifunctional reaction module,This module highly integrates functions such as hydrogenation reaction, gas-liquid separation, and waste liquid removal. The large amount of bubbles generated during the testing of inorganic arsenic has a significant impact on the test results. Multi functional reaction module can effectively reduce bubbles,Not only does it simplify the pipeline, but it also reduces the number of fault points, allowing for direct insertion and removal, bringing convenience to the operation and maintenance of instruments.

Sample injection system

Adopting continuous flow injection method,Double peristaltic pump injection greatly improves testing efficiency, which is 3-4 times more efficient than traditional injection methods. Testing a sample three times only requires data30second

4. Technical indicators

Sample atomization

*atomizer:Hydrogenation shielded atomizer

*carrier gas/Shielding gas:argon

Sample preparation and import

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:More than three orders of magnitude

Data processing system:

*Can be offline at will/Switching work between connected devices.one/Open multiple windows freely.one/Multiple databases to choose from.Management sample calibration to further improve measurement accuracy.Unrestricted report formatting,Measurement data can be switched toEXCELMake revisions.Measurement data can be shared through a local area network for resource sharing