There is no one place to go to verify the validity of your journal articles, rather each article must be weighed on its own merits and what you know of the author, journal, and journal publisher. Here are a few things that weigh in favor of an article being more scholarly:
Article level -
Journal level -
For open access journals, inclusion of a journal title in the Directory of Open Access Journals (DOAJ) can be a positive indicator.
Video from Oviatt Library at California State University: Types of Information (3:00)
Handout from York University: PARCA Test - one way of evaluating information that you find
Handout from Northeastern University discussing the types of periodicals (scholarly, professional, opinion, popular) and how to recognize them