Electrospray ionization source-based ultrasonic vibration device
A technology of electrospray ionization source and vibration device, which is applied in the field of ionization source, can solve the problems such as the influence of ion sampling and transmission efficiency, non-uniform atomization of droplets, and poor atomization effect, so as to overcome the shortcomings of low resolution and improve Desolvation efficiency, sample saving effect
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Embodiment 1
[0033] An ultrasonic vibration device based on an electrospray ionization source, such as image 3 As shown in the figure, 301 is a liquid phase sample, 302 is a quartz capillary, 303 is a spray, 304 is a skimmer, 305 is a transmission capillary, 306 is a network structure device, 307 is an ion, and 308 is an ultrasonic vibration body. The ultrasonic vibrating device includes a mesh structure and an ultrasonic vibrating body, which is located outside the vacuum chamber and placed between the skimmer cone and the spray needle. The role of the skimmer cone is to prevent the liquid ejected from the electrospray from accumulating at the entrance of the stainless steel capillary to cause capillary blockage . The material of the mesh structure described in this example is stainless steel, and the size of the mesh opening is not limited, subject to not affecting the passage of the spray; the ultrasonic vibrating body is an ultrasonic vibrating rod, which is connected with the mesh st...
Embodiment 2
[0037] An ultrasonic vibration device based on an electrospray ionization source, such as Figure 4 As shown, 401 in the figure is a liquid phase sample, 402 is a quartz capillary, 403 is a spray, 404 is a skimmer cone, 405 is a metal transmission capillary, 406 is a conical network structure, 407 is an ion, and 408 is an ultrasonic vibrator. The difference between this embodiment and Embodiment 1 is that the planar network structure is replaced by a three-dimensional cone network structure. Similarly, the ultrasonic vibration body is connected with the cone network structure, located outside the vacuum chamber, and placed between the spray needle and the skimmer cone, such as Figure 4 shown. The cone mesh structure described in this example is rolled up by a fan-shaped plane metal mesh, the radius of the bottom surface is not limited, and the height and length of the cone are moderate. This is because the longer the height of the cone, the longer the time for ions to pass t...
Embodiment 3
[0042] An ultrasonic vibration device based on an electrospray ionization source, such as Figure 5 As shown, 501 in the figure is a liquid phase sample, 502 is a quartz capillary, 503 is a spray, 504 is a skimmer, 505 is a metal transmission capillary, 506 is a network structure, 507 is an ion, and 508 is an ultrasonic vibration body. The difference between this example and embodiment 1,2 is:
[0043] 1. Two ultrasonic vibration devices are installed in front of the sampling port for further atomization process. Compared with Example 1, the atomization effect is more sufficient, and the passing droplet radius is smaller.
[0044] 2. During the working process, the frequency settings of the two ultrasonic vibrating bodies are different. When the droplets pass through the ultrasonic vibrating net twice, they undergo ultrasonic atomization twice, and the formed droplets have a smaller radius.
[0045] 3. During the working process, different temperatures are applied to the two ...
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