{"entity": "publication", "iuid": "cf295c3525a740cd8c520ca1d18106d7", "timestamp": "2026-08-25T13:36:34.587Z", "links": {"self": {"href": "https://publications-affiliated.scilifelab.se/publication/cf295c3525a740cd8c520ca1d18106d7.json"}, "display": {"href": "https://publications-affiliated.scilifelab.se/publication/cf295c3525a740cd8c520ca1d18106d7"}}, "title": "Electrochemically Etched Tapered-Tip Stainless-Steel Electrospray-Ionization Emitters for Capillary Electrophoresis-Mass Spectrometry.", "authors": [{"family": "Aerts", "given": "Jordan T", "initials": "JT"}, {"family": "Andr\u00e9n", "given": "Per E", "initials": "PE", "orcid": "0000-0002-4062-7743", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/f1dd27e8b238475383983480e10099f6.json"}}, {"family": "Jansson", "given": "Erik T", "initials": "ET", "orcid": "0000-0002-0675-3412", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/5982be2a4d6845339ff1964bf2dcb77c.json"}}], "type": "journal article", "published": "2023-04-07", "journal": {"title": "J. Proteome Res.", "issn": "1535-3907", "volume": "22", "issue": "4", "pages": "1377-1380", "issn-l": "1535-3893"}, "abstract": "We have used household consumables to facilitate electrochemical etching of stainless-steel hypodermic tubing to produce tapered-tip emitters suitable for electrospray ionization for use in mass spectrometry. The process involves the use of 1% oxalic acid and a 5 W USB power adapter, commonly known as a phone charger. Further, our method avoids the otherwise commonly used strong acids that entail chemical hazards: concentrated HNO3 for etching stainless steel, or concentrated HF for etching fused silica. Hence, we here provide a convenient and self-inhibiting procedure with minimal chemical hazards to manufacture tapered-tip stainless-steel emitters. We show its performance in metabolomic analysis with CE-MS of a tissue homogenate where the metabolites acetylcarnitine, arginine, carnitine, creatine, homocarnosine, and valerylcarnitine were identified, all with basepeak separated electropherograms, within <6 min of separation. The mass spectrometry data are freely available through the MetaboLight public data repository via access number MTBLS7230.", "doi": "10.1021/acs.jproteome.3c00076", "pmid": "36866861", "labels": [], "xrefs": [{"db": "pmc", "key": "PMC10088039"}], "notes": [], "created": "2026-08-20T08:11:46.960Z", "modified": "2026-08-20T08:11:47.043Z"}