1,Metal cover glass and efficient nebulizer the invention, production, use, so that the sensitivity of atomic absorption spectrophotometer, the detection limit and stability have been greatly improved, to flame atomic absorption spectrometry the highest level. Total of the following three models:

WNA-1Model   Ordinary

WNA-2 Model  Enhance the volume of tunable within a 1-10mL

WNA-3 Model  Hydrofluoric acid-resistant type

2,Metal cover glass and efficient nebulizer good features:

1,Glass atomizer both high performance and rugged metal atomizer.

2,The use handtailor current limiting enters the fluid tube, is not easy to stop up.

3,Sensitivity to FAAS for the highest level.

4,Acid (except hydrofluoric acid), WNA-3 model is also resistance to hydrofluoric acid.

5,Users free transfer, good long-term performance of the same.

6,For all domestic and foreign manufacturers supporting.

3,Metal cover glass and efficient nebulizer structural features:

By the coaxial glass tube atomizer measured inhalation solution, then the outer tube air, vents on the cover can be removed with the impact cap (not interchangeable between different nebulizer), glass atomizer fixed in the stainless steel protection kit, its shape and the type host of different atomizer adapted Block, a special polyethylene inner tube limiting plug into the liquid pipe (resistance to organic solvents), or plug stainless steel pipe - silicone tube - polyethylene limit into the liquid tube (not easy to fall off, but impatient with organic solvents the silicone tube).

3,Metal cover glass and efficient nebulizer Work Parameters:

1, the compressed air pressure 0.2Mpa, use the normal temperature and pressure calibration of the air flow meter measuring flow 10-11 l / min (normal temperature and pressure, measured from the exit).

If the air flow meter connected in series before the atomizer into the trachea measured readings at this time reduced to 5.5 l / min or so. Host plant are so connected, and this reading can not be used for the calculation of chemical computation (the same situation can not be used for chemical acetylene flow computation).

Manufacturer or user to change the standard working pressure atomizer 0.2MPa, analysis of performance change. Without the use of auxiliary help of gas, the same atomizer can also use nitrous oxide, and provide safe use of air / nitrous oxide automatic switching valve, custom 5cm burner.

2, sample solution to enhance the volume: The maximum absorbance subject to the determination of copper, about 4-6 ml / min, this upgrade also applies to the amount of cold atoms of other elements required for high-temperature atoms of the elements (such as calcium ) should be reduced to enhance the volume or aerosol into the flame and make too much flame temperature decreases, resulting in lower atomization efficiency of that sensitivity was lower, as well as other elements of interference increased, if the measured concentration of elements is not particularly low not necessarily in the best conditions determined from time to replace the current limit into the liquid tube.

If you use the WNA-2-type atomizer, continuous tone to enhance the amount of measurable elements can enhance the capacity to find the best, that is marked with a large concentration of solution (absorbance at about 0.3A), a continuous increase or decrease to enhance the volume, use the maximum amount of absorption enhancement (maximum of not more than 6ml/min), than the WNA-1 type change into the liquid tube easy.

Acetylene flow: the absorbance of standard solution at about 0.3A, acetylene flow of continuous change, choose the maximum absorption of the flow, Note: The fuel-rich flame itself is also a great absorption, especially short wavelength measurement, time measurement can have two different concentrations of standard solution, absorbance subtraction (net of flame absorption), choose the larger difference condition.