Shimadzu atomic absorption atomizer

Atomic absorption atomizerIt is the core accessory used for all AAS atomic absorption spectrophotometers both domestically and internationally. The stainless steel jacket is compatible with the atomizer base, the outer tube is connected to air, the coaxial glass inner tube sucks in the measured solution, and the nozzle has an impact ball. Adopting equal inner diameter polyethylene flow limiting pipe, it is not easy to block.


Atomic absorption atomizerAdvantages:


1. Combining the high performance of glass atomizers with the robustness of metal protective sleeves.
2. The sensitivity reaches the level of flame atomic absorption method.
3. Use a specially designed flow restriction tube to prevent blockage.
4、High sensitivity: When using an air/acetylene flame to measure 2ug/ml copper, the absorbance can be better than 0.40A.
5. Good stability: The relative standard deviation (RSD) is less than 0.8%.


Installation and debugging:

The atomizer can pass through the atomizer seat hole and be directly inserted for use. If it cannot be passed through, remove the end of the fog chamber, then remove the impact ball cap, insert the atomizer into the atomization seat, put on the impact ball cap, suck in water to adjust the mist to spread out in a flat plane, and symmetrically charge forward with the impact ball support rod facing downwards. Pressure range of 0.2MPa-0.25MPa (depending on the atomic absorption model), flow rate of 5-7 liters/min, and lifting rate of 4-6ml/min. Adjust the acetylene flow rate and burner position, with the beam passing from directly above, and the main engine and gas supply should be stable. Preheat for more than 30 minutes, use 2ug/ml copper, absorbance 0.4A, relative standard deviation less than 1%.


Fault handling:

Nebulizer blockage treatment

1. After using the atomizer for a period of time, some sediment may accumulate or clog. Use gas to blow back from the nozzle, or use a syringe to fill it with water and inject it in the opposite direction to keep it unobstructed.

Usually at the inlet, it can be removed by lightly tapping with fingers, or by removing the capillary tube and injecting water in reverse with a syringe.