Ion analyzer

The ion analyzer addresses positioning challenges by using a nebulizing gas flow to maintain the capillary's straight shape and alignment, enhancing durability and sensitivity through uniform ion generation and collection.

JP2026095877APending Publication Date: 2026-06-12SHIMADZU SEISAKUSHO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
SHIMADZU SEISAKUSHO LTD
Filing Date
2024-12-02
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Conventional mass spectrometers face challenges in positioning the capillary tip relative to the ion intake port, leading to reduced durability and non-uniform ion generation due to bending forces applied to small-diameter capillaries, affecting analytical sensitivity.

⚗Method used

An ion analyzer with a capillary inserted into a nebulizing gas tube, featuring a concentric nozzle portion and gas flow paths that apply nebulizing gas to maintain the capillary's straight shape and ensure precise alignment with the ion intake port, avoiding forced bending and enhancing coaxiality.

🎯Benefits of technology

Improves capillary durability, reduces damage, and increases ion generation and collection efficiency, resulting in higher analytical sensitivity by ensuring reproducible positioning and uniform droplet ejection.

✦ Generated by Eureka AI based on patent content.

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    Figure 2026095877000001_ABST
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Abstract

This improves the reproducibility of the position of the capillary tip relative to the ion intake port. [Solution] One embodiment of the ion analyzer according to the present invention is an ion analyzer equipped with an ion source using the ESI method, the ion source comprising: a linearly extending capillary (20) for discharging a liquid sample; a nebulizing gas tube (21) through which the capillary is inserted and which ejects nebulizing gas to the outside of the liquid sample discharged from the capillary, the nebulizing gas tube comprising: a nozzle portion (24) having a concentric opening at its tip with an opening at the end of the capillary; a first gas flow path (220) located upstream of the nozzle portion, with its flow path cross section eccentric with respect to the capillary such that its inner wall surface contacts or is very close to the outer surface of the capillary, and extending along the capillary; and a second gas flow path (222) that follows the downstream end of the first gas flow path and expands to the opposite side of the capillary from the first gas flow path.
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