On May the 6th, Yi Xin’s paper entitled ‘Compound-specific radiocarbon analysis of benzene polycarboxylic acids for source apportionment of polyaromatic organic matter in ambient aerosols‘ was accepted for publication in Atmospheric Environment.  As Prof Orjan Gustafsson of Stockholm University commented, that this is an important contribution to tracking BC substances in the atmosphere; while, we are preparing for a more powerful next one. Congratulations!