The　BCT-7800A　PLUS　VOC　online　monitor　system　was　employed　to　measure　ambient　volatile　organic　compounds（VOCs）in　a　typical　solvent-using　industrial　park　in　Beijing.　From　January　to　June　2023，the　pollution　characteristics，source　apportionment，and　ozone　formation　potential　（OFP）of　VOCs　were　studied，and　the　results　of　a　comparative　analysis　were　also　discussed　between　heating　and　non-heating　periods.　The　results　indicated　that　VOC　concentrations　from　January　to　June　2023　were（104.21　±　91.31）μg·m−3　on　average.　The　concentrations　of　TVOCs　under　the　influence　of　southerly　and　northerly　winds　were（214.18　±　202.37）μg·m−3　and（197.56　±　188.3）μg·m−3，respectively.　Alkanes　were　the　species　with　the　highest　average　concentration　and　proportion，respectively（45.53　±　41.43）μg·m−3.　The　VOC　concentration　during　the　heating　period　was　higher　than　those　during　the　non−heating　period，with　values　of（111.57　±　83.96）μg·m−3　and（87.92　±　75.03）μg·m−3，respectively.　Propane　and　ethane　were　the　species　with　the　highest　average　concentration　during　the　heating　period.　Compared　with　those　in　the　non-heating　period，the　average　concentrations　of　three　species（propane，ethane，and　n-butane）in　the　top　ten　species　increased　during　the　heating　period，with　average　concentrations　increasing　by　51.94%，54.64%，and　26.32%，respectively.　The　source　apportionment　results　based　on　the　positive　matrix　factorization（PMF）model　indicated　that　the　major　sources　of　VOCs　in　the　park　during　the　monitoring　period　were　printing　emission　sources（4.95%），oil　and　gas　evaporation　sources（9.52%），fuel　combustion　sources（15.44%），traffic　emissions　sources（18.97%），electronic　equipment　manufacturing（24.59%），and　industrial　painting　sources（26.52%）.　Therefore，industrial　painting　sources，electronic　equipment　manufacturing　sources，and　traffic　emissions　sources　were　the　emission　sources　that　the　park　should　focus　on　controlling.　Compared　with　those　during　non-heating　periods；industrial　painting，traffic　emission，and　fuel　combustion　sources　contributed　more　during　the　heating　period，with　VOC　concentrations　increasing　by　15.02%，16.53%，and　24.98%，respectively.　The　average　OFP　of　VOCs　from　May　to　June　during　the　monitoring　period　was　198.51　μg·m−3　and　OVOCs，olefins，and　aromatic　hydrocarbons　contributed　the　most　to　OFP，which　were　47.41%，22.15%，and　18.41%，respectively.　The　electronic　equipment　manufacturing　source　was　the　largest　contributor　to　the　summer　OFP　of　the　park　and　its　contribution　rate　was　30.11%，which　should　be　strengthened　in　the　future.　©　2024　Science　Press.　All　rights　reserved.