Thongsaw, A. ., Sananmuang, R. ., Ross, G. M. ., & 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), 124–131. https://doi.org/10.1515/nbec-2017-0017