Air quality changes after Hong Kong shipping emission policy: An accountability study Mason, Tonya G. ; Chan, King Pan ; Schooling, C. Mary ; Sun, Shengzhi ; Yang, Aimin ; Yang, Yang ; Barratt, Benjamin ; Tian, Linwei Abstract Publication: Chemosphere Pub Date: July 2019 DOI: 10.1016/j.chemosphere.2019.03.173 Bibcode: 2019Chmsp.226..616M