Thongsaw, A. ., Sananmuang, R. ., Ross, G. M. . and Chaiyasith, W. C. . (2017) “Microextraction based on solidified floating organic drop coupled with ETAAS for the determination of lead in herbs”, Nova Biotechnologica et Chimica, 16(2), pp. 124–131. doi: 10.1515/nbec-2017-0017.