1 23 Analytical and Bioanalytical Chemistry ISSN 1618-2642 Volume 405 Number 12 Anal Bioanal Chem (2013) 405:4127-4138 DOI 10.1007/s00216-013-6787-3 Analysis of polyfluoroalkyl substances and bisphenol A in dried blood spots by liquid chromatography tandem mass spectrometry Wanli Ma, Kurunthachalam Kannan, Qian Wu, Erin M. Bell, Charlotte M. Druschel, Michele Caggana & Kenneth M. Aldous