Controllable solid phase micro-extraction handle

A controllable, extraction technology, applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of limited types of solid-phase microextraction handles and high prices, and achieve improved performance and utilization, low cost, and easy replacement. Effect

Pending Publication Date: 2018-06-26
GANSU INST OF POLITICAL SCI & LAW
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AI-Extracted Technical Summary

Problems solved by technology

According to the survey, the types of solid-phase microextraction handles currently sold are very limited. Not only are they expensi...
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Abstract

The invention relates to a controllable solid phase micro-extraction handle, which comprises a handle cylinder, a metal bushing and an extraction probe using a stainless steel wire or silicon oxide asa supporting material, wherein the handle cylinder is provided with a positioning ring and is embedded with a push button arranged on a zigzag guide rail, the lower end of the handle cylinder is provided with a metal bushing fixation bracket, the metal bushing fixation bracket is connected to the metal bushing, the bottom end of the push button is connected to the metal bushing fixation bracket,and the extraction probe sequentially penetrates through the metal bushing and the metal bushing fixation bracket, and is connected to the handle cylinder through the push button. According to the present invention, the controllable solid phase micro-extraction handle has advantages of low cost, convenient carrying, durability, easy regulation and easy extraction probe replacement, and can providethe technical support for the further expansion of the wide application of SPME technology.

Application Domain

Component separationPreparing sample for investigation

Technology Topic

EngineeringSilicon oxide +5

Image

  • Controllable solid phase micro-extraction handle
  • Controllable solid phase micro-extraction handle
  • Controllable solid phase micro-extraction handle

Examples

  • Experimental program(1)

Example Embodiment

[0029] Such as figure 1 As shown, the controllable solid phase micro extraction handle includes a handle barrel 1, a metal sleeve 7 and an extraction probe 8 with stainless steel wire or silicon oxide as a support material. The handle barrel 1 is provided with a positioning ring 3, and is embedded with a push button 2 arranged on a zigzag guide rail 5; the lower end of the handle barrel 1 is provided with a metal sleeve fixing bracket 6, the metal sleeve fixing bracket 6 and the metal sleeve 7 The bottom end of the push button 2 is connected to the metal sleeve fixing bracket 6; the extraction probe 8 passes through the metal sleeve 7 and the metal sleeve fixing bracket 6 in turn, and is connected to the handle barrel 1 through the push button 2.
[0030] Among them: the bottom end of the push button 2 is connected to the metal sleeve fixing bracket 6 through the spring 4.
[0031] The handle barrel 1 includes an upper half 11 and a lower half 12 connected together (see figure 2 ), the upper half 11 is provided with a scale 113, one end of which is provided with a guide rail fixing groove 111, and a push button sliding groove 112 is provided in it; the upper half 11 opposite to the guide rail fixing groove 111 is provided with a thread I 114; One end of the lower part 12 is provided with a thread II 121, and the other end is provided with a metal sleeve fixing bracket slot 122; the lower half 12 is connected to the metal sleeve fixing bracket 6 through a metal sleeve fixing bracket slot 122; a guide rail fixing slot 111 is connected with the sawtooth guide rail 5; the push button sliding groove 112 is connected with the push button 2.
[0032] The upper part 11 and the lower part 12 are butted together by the thread I 114 and the thread II 121.
[0033] The push button 2 is respectively provided with an indicator line 21, a slot 22, a spring slot 24 connected to the push button spring 25, and a metal reed 27 inserted in the metal reed slot 26 (see image 3 , Figure 4 , Image 6 ); The slot 22 is composed of the handle barrel clamping slot 221 and the sawtooth guide rail clamping slot 222; the handle barrel clamping slot 221 is connected to the handle barrel 1; the sawtooth guide rail clamping slot 222 is connected to the sawtooth guide rail 5, the sawtooth guide rail 5 and The metal reeds 27 are connected. The push button spring slot 24 can be pushed up and down within a certain range.
[0034] The bottom end of the push button 2 is connected to the extraction probe 8 through an extraction probe fixing device 23. The extraction probe fixing device 23 includes a fixing screw 231 (see Figure 5 ); The extraction probe jack 232 is provided with a fixing screw rubber pad 233; the fixing screw 231 is connected with the extraction probe 8.
[0035] The metal casing holder 6 includes an upper cover 61 and a lower cover 63 that are connected together by threads Ⅲ (see Figure 7 ); A gasket 61 is provided between the upper cover 61 and the lower cover 63; the lower cover 63 is welded with a metal sleeve 7.
[0036] The method of use of the present invention is as follows:
[0037] ⑴Unscrew the handle barrel 1, insert the handle barrel clamping slot 221 and the sawtooth guide slot 222 of the push button 2 into the button sliding groove 112 of the handle barrel 1 and the sawtooth track 5 respectively, and gently push the sawtooth track 5 to make it The upper end is just inserted into the guide rail fixing groove 111 in the upper half of the handle barrel.
[0038] ⑵Put the extraction probe 8 through the metal sleeve 7 from the uncoated end, insert it into the extraction probe jack 232 at the lower end of the push button 2 through the sealing gasket 61 of the metal sleeve fixing bracket 6, adjust the insertion depth to make the indicator mark When 21 is at the 0 mark of the scale line 113, the coating front end of the extraction probe 8 just does not expose the metal sleeve 7. Tighten the fixing screw 231 to fix the extraction probe 8 on the push button 2, and finally set the spring 4 on the sawtooth rail 5. on.
[0039] ⑶ Put the metal sleeve fixing bracket 6 into the metal sleeve fixing bracket slot 122 of the lower part 12 of the handle barrel 1, and tightly connect with the upper part 11 through the thread I 114 and the thread II 121, and fix the extraction handle according to actual needs. On a suitable metal bracket, push the button 2 to extend the extraction probe 8 into the actual sample, use the indicator line 21 and the scale line 113 to observe the exposed length of the extraction probe 8, and then install the positioning ring 3 on the appropriate position of the handle barrel 1. , Used to fix the extraction probe 8 to maintain the same coating length and position during each extraction process. After the extraction is completed, fully retract the extraction probe 8 into the metal sleeve 7 through the push button 2, insert the metal sleeve 7 into the gas chromatography vaporization chamber, and push out the extraction probe 8. After the thermal analysis of the target analyte is completed, the extraction The probe 8 is retracted into the metal sleeve 7, and finally the extraction handle is pulled out to complete the sample injection.

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Description & Claims & Application Information

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