Analisis Konsentrasi Logam Berat Timbal (PB) Dan Kadmium (CD) Pada Eceng Gond…

The research was conducted to find out the concentration of heavy metal Lead (Pb) and Cadmium (Cd) at water hyacinth (Eichhornia crassipes) in Indragiri River Watershed Indragiri Hilir Regency as the biology module design of environmental pollution concept in Senior High School (SMA) conducted in May-July 2016. The research station is conducted by purposive random sampling taking into acco…