Some search queries are ambiguous before anyone answers them, and z phys chem is one of them. The abbreviation most often points at Zeitschrift fur Physikalische Chemie, a long-running physical chemistry journal cited in several shortened forms, but the same three tokens also collide with other physical chemistry abbreviations, with departmental names, and with the alphabetical residue of longer titles. I file the page not to settle the abbreviation by authority but to describe the tools that settle it: the international standard serial number, the catalogue record and the chemical source index.
The reason this belongs in a peptide reading room is prosaic. Peptide chemistry sits between synthesis and physical chemistry, and papers on conformation, kinetics and thermodynamics are regularly published in physical chemistry venues. A reader following a reference out of a peptide paper therefore meets abbreviation problems immediately, and the failure mode is not confusion but false confidence: matching a short string to the wrong title and then citing the wrong journal. The general reading practice for this column is filed at the guides column.
why short abbreviations collide
Journal abbreviations are abbreviated per title rather than per field, and different indexing systems abbreviate by different rules. One system keeps the article and the preposition, another drops them, a third uses a different contraction entirely, and the same journal can therefore carry two or three accepted short forms while two quite different journals can share one. Add the fact that physical chemistry is a phrase that appears inside dozens of serial titles and the collision rate rises steeply: phys chem, phys. chem. and similar fragments each have more than one plausible expansion depending on which catalogue is asked.
There is also a linguistic problem specific to german-language titles. Zeitschrift fur Physikalische Chemie has been published under variations of its title across a long history, and the umlaut and the abbreviation point are handled inconsistently between databases, so a search string can miss a record that the same title would otherwise return. That is why an abbreviation should never be resolved by pattern-matching alone. The reliable path is to match an identifier rather than a string, which is what the next section sets out.
disambiguating an abbreviation with identifiers
The international standard serial number is the anchor. An issn is an eight-character identifier assigned to a serial title; it belongs to that title rather than to a publisher or a language edition, and it is carried in catalogue records, in article metadata and often in the reference formatting of a database. If a reader can recover the issn from any one of those places, the abbreviation question is settled. Two records sharing an issn are the same journal whatever their short forms look like, and two records with different issns are different journals however similar their abbreviations appear.
Two further tools help when the issn is not printed. A national library of medicine catalogue records serial titles with their accepted abbreviations, their issns and sometimes their earlier and later titles, which is exactly what is needed when a journal has changed name over its history. A chemical abstracts source index performs the same function for chemistry literature and is often the only place where an older or non-english title is recorded in full. I use identifiers the same way when I file notes about a venue, as described at journal of peptide science impact factor.
| tool | what it holds | what it settles |
|---|---|---|
| issn | an eight-character serial identifier tied to one title | whether two short forms denote the same journal |
| nlm catalogue record | title, accepted abbreviation, issn and earlier or later titles | the canonical abbreviation and any historical name change |
| cas source index | bibliographic source records for chemistry literature | older or non-english titles that general databases abbreviate loosely |
| publisher journal page | the current title, issn and indexing statements of a journal | the present form of a title that may have changed over time |
| bibliographic database | indexed articles with metadata attached to a serial record | a second record to cross-check the identifier against |
how I file an ambiguous reference
My own practice when a reference is ambiguous is to refuse to guess and to record the uncertainty instead. I copy the abbreviation exactly as the citing paper printed it, I note the article title and the year, and then I look for the issn in a catalogue or in the database record for that article. If two catalogues disagree about which journal the abbreviation denotes, I write both down and mark the reference unresolved rather than picking the more familiar one, because the familiar expansion is the likelier error.
That practice sits inside a wider rule for this archive: a page about a venue is bibliographic description, not an assessment. I do not rank journals, I do not describe one as better than another, and I do not treat where something was published as evidence about what it found. Community material about journals and papers is kept in a different drawer and labelled as anecdote, as explained at reddit thread notes. Molecule-level literature is filed the same way in the compounds column, for instance at mk-677 literature framing, and the central filing remains chemyo peptides.
- Resolve a journal abbreviation with an issn, never by pattern-matching the short form on its own.
- Watch for historical title changes, because a long-running journal may have carried more than one name.
- Record an unresolved reference as unresolved rather than choosing the most familiar expansion.
- Treat a venue as bibliographic context only, and read the methods section for anything about evidence.
Frequently asked questions
What does z phys chem usually stand for?
How do I check which journal an abbreviation refers to?
Why is the same journal listed under more than one abbreviation?
Do you evaluate or rank the journals mentioned here?
Does this page provide pricing, discount or purchase information?
References and public sources
Literature searches and public reference links. None of them confirms or denies any community claim filed elsewhere on this site.
- pubmed - zeitschrift fur physikalische chemie records
- pubmed - journal abbreviation disambiguation and serial identifiers
- ncbi - nlm catalogue of serial titles
- ncbi - physical chemistry and peptide conformation records
- wikipedia - international standard serial number
- wikipedia - iso 4 journal abbreviation rules
- scholar - zeitschrift fur physikalische chemie literature
- acs - physical chemistry journal literature search