Effects Of Heavy Metals On The Air Pollution Tolerance Indices (apti) Of Five Medicinal Plants Growing Within Quarry Site In Ishi-agu, Ebonyi State, Nigeria

ABSTRACT Effects of heavy metals on the Air Pollution Tolerance Indices (APTI) of five medicinal plants growing within quarry site in Ishi-Agu, Ebonyi State, Nigeria were studied. Following laboratory analysis of the leaves of the plants for metal load and four biochemical parameters of APTI computation. The metal load was determined by the Atomic Absorption spectrophotometric method, while the ascorbic acid was determined by the titrimetric method, leaf extract pH by the electrochemical techniques, relative water content by plant turgidity mass and the total chlorophyll, by spectrophotometri…