Preparation method and application of needle-shaped sample for glow discharge mass spectrometry detection
A technology of glow discharge mass spectrometry and detection needle, which is applied in the field of analysis and detection, can solve the problems of easy melting of the sample tip, small contact area, and poor cooling effect, so as to widen the size range of the sample, improve the heat conduction efficiency, and improve the cooling effect. effect of effect
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Embodiment 1
[0021] This example provides a method for preparing a needle-shaped sample for glow discharge mass spectrometry detection. The preparation method of the needle-shaped sample used for glow discharge mass spectrometry detection in this embodiment comprises the following steps:
[0022] (1) Scrub the needle-shaped sample holder once with hydrofluoric acid, rinse it with pure water, place it in a mixed acid of nitric acid and hydrochloric acid (both volume ratio nitric acid: hydrochloric acid = 1:3) and heat it for 30 minutes, then use pure Wash with water for 2-3 times, then place it on a class 100 clean bench to dry;
[0023] (2) Inject 0.08mL of liquid gallium (purity: 99.9999wt%) into the needle-shaped sample holder, and then insert the gallium sample (namely Ga, specification Φ2.5*22mm) into the liquid gallium;
[0024] (3) Clamp the sample holder with Teflon tweezers and insert the sample holder into the liquid nitrogen cup filled with liquid nitrogen, keep the sample port ...
Embodiment 2
[0030] This example provides a method for preparing a needle-shaped sample for glow discharge mass spectrometry detection. The preparation method of the needle-shaped sample used for glow discharge mass spectrometry detection in this embodiment comprises the following steps:
[0031] (1) Scrub the needle-shaped sample holder once with hydrofluoric acid, rinse it with pure water, place it in a mixed acid of nitric acid and hydrochloric acid (both volume ratio nitric acid: hydrochloric acid = 1:3) and heat it for 30 minutes, then use pure Wash with water for 2-3 times, then place it on a class 100 clean bench to dry;
[0032] (2) Inject 0.08mL of liquid gallium (purity: 99.9999wt%) into the needle-shaped sample holder, and then insert the tellurium sample (i.e. Te, specification 2mm*2mm*18mm) into the liquid gallium;
[0033] (3) Clamp the sample holder with Teflon tweezers and insert the sample holder into the liquid nitrogen cup filled with liquid nitrogen, keep the sample po...
Embodiment 3
[0039] This example provides a method for preparing a needle-shaped sample for glow discharge mass spectrometry detection. The preparation method of the needle-shaped sample used for glow discharge mass spectrometry detection in this embodiment comprises the following steps:
[0040] (1) Scrub the needle-shaped sample holder once with hydrofluoric acid, rinse it with pure water, place it in a mixed acid of nitric acid and hydrochloric acid (both volume ratio nitric acid: hydrochloric acid = 1:3) and heat it for 30 minutes, then use pure Wash with water for 2-3 times, then place it on a class 100 clean bench to dry;
[0041] (2) Inject 0.08mL of liquid gallium (purity: 99.9999wt%) into the needle-shaped sample holder, and then insert the antimony sample (i.e. Sb, specification 1mm*2mm*8mm) into the liquid gallium;
[0042] (3) Clamp the sample holder with Teflon tweezers and insert the sample holder into the liquid nitrogen cup filled with liquid nitrogen, keep the sample port...
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