OpenASAP: An Affordable 3D Printed Atmospheric Solids Analysis Probe (ASAP) Mass Spectrometry System for Direct Analysis of Solid and Liquid Samples

Overview

Journal HardwareX

Date 2024 Jan 8

PMID 38186665

Authors

Robert Samples

Riko Mukoyama

Jacob Shaffer

Jill Mikucki

Lesley-Ann Giddings

Affiliations

Soon will be listed here.

Abstract

Atmospheric Solids Analysis Probe (ASAP) mass spectrometry is a versatile technique allowing direct sampling of solid and liquid samples, but its adoption is limited due to the high cost of commercial ASAP systems. To address this, we present OpenASAP, an open-source ASAP system for mass spectrometers that can be fabricated for $20 or less using 3D-printing. Our design is readily adaptable to instruments from different manufacturers and can be produced with a variety of additive manufacturing techniques on consumer-grade 3D-printers. The probe allows for rapid sampling of solid and liquid samples without sample preparation, making it useful for high throughput screening, investigating spatial localization and function of analytes in biological samples, and incorporating mass spectrometry in instructional settings. We demonstrate its effectiveness by obtaining mass spectra of three natural product standards at levels as low as 10 ng/ml in liquid samples, and detecting these metabolites in microbial cultures that are difficult to analyze due to complex sample matrices or analyte properties. Furthermore, we demonstrate direct sampling of thin layer chromatography (TLC) spots of these cultures.

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