When you pitch a story to a business journalist or reporter you may not always get a response, it is part of you job to persist and contact them because they will not always contact you.
If you think about that from the perspective of why didn't I get a response to my call, or why didn't I get a response to my email, it may be just as Joan was suggesting earlier, that it's nothing personal at all. It's just a matter of these people being very busy. Polite persistence, I would say, is a good buy word in dealing with business journal staff. I guarantee you, the payoff for landing a story in the business journal is going to be geometrically greater than winding up in the daily newspaper.

There is much more great information about publishing in business journals found in How to Use Business Journals to Tell Your Story.
http://101publicrelations.com/businessjournals.html?utm_source=prideas&utm_content=business_journals