R. Ratnawulan, A. Fauzi, A.S. Arma
We have analyzed the effects of heavy metals on changes in intensity and the inhibition coefficients of the firefly bioluminescence. The heavy metal compound used is PbNO3 (Pb); ZnNO3 (Zn), CuNO3 (Cu) and FeNO3 (Fe). The concentration of heavy metals used is 0.5 mg / l, 1 mg / l and 2 mg / l, for each heavy metal. The results found that the coefficient of inhibition and bioluminescence intensity was influenced by the molecular weight of heavy metals. The results explain that the cations participate in the re-distribution of electron density in chemical reactions and in the formation of electron excitation states. This pattern explains that the inhibition of the bioluminescence intensity is observed in the presence of heavy metals with higher molecular weight of heavy metals. © 2019 Published under licence by IOP Publishing Ltd.
Physics Department, Universitas Negeri Padang, Indonesia
