provisional tolerable weekly intake

Determination of trace metal concentrations in different parts of the khat varieties (Catha edulis) using inductively coupled plasma-mass spectroscopy technique and their human exposure assessment

Bratty MAl, Ahsan W, Alhazmi HA, Attafi IM, Khardali brahimA, Abdelwahab SI. Determination of trace metal concentrations in different parts of the khat varieties (Catha edulis) using inductively coupled plasma-mass spectroscopy technique and their human exposure assessment. Pharmacognosy Magazine . 2019;15(63):449-458.