A hand-portable digital linear ion trap mass spectrometer Xue, Bing ; Sun, Lulu ; Huang, Zhengxu ; Gao, Wei ; Fan, Rongrong ; Cheng, Ping ; Ding, Li ; Ma, Li ; Zhou, Zhen Abstract Publication: The Analyst Pub Date: 2016 DOI: 10.1039/C6AN01118G Bibcode: 2016Ana...141.5535X