The phrase "particularly a concern" is correct and usable in written English.
It can be used when emphasizing a specific issue or problem that is of greater importance or urgency.
Example: "The rising levels of pollution in urban areas are particularly a concern for public health officials."
Alternatives: "especially a worry" or "notably an issue".
That is particularly a concern across the Atlantic, where fares have risen disproportionately as competition has shrunk.
That is particularly a concern in competitive fields that have relied on promotions to stimulate sales -- like fast food, the McDonald's market.
This is particularly a concern in CIS that manage sensitive data, such as electronic health records (EHRs), where misuse of the system can lead to the exploitation of private medical details [16].
This is particularly a concern for large firms; Kondo (2014) show that 30%% of those who were employed at firms with more than 1000 employees retire at age 60 even after the EESL revision in 2006.
The disparity between in situ albedo observations and those collected over low-density needleleaf forest are particularly a concern because this cover type comprises a significant proportion of the boreal region, and its mis-specification in climate models could lead to large errors in energy balance.
That's particularly a concern here because the government has suggested that this investigation was classified.
But relatively few economists, even those who see signs of an improving economy, sound particularly buoyant, a concern shared by liberals and conservatives alike.
We may profess clarity about our allegiance, but novelists particularly cannot escape a concern with the moral.
His joints are still a concern, particularly the shoulders.
Credit is more of a concern, particularly for exporters, who are finding foreign lines of credit much harder to acquire.
Policy conflict is a concern, particularly in an environment with dynamically changing users and services, and with numerous policy engines.
