Study on the spectrum response of Cyanobacter to the Pb2+ pollution

Xiuju Wu; Qian Cheng

doi:10.1117/12.828457

18 September 2009 Study on the spectrum response of Cyanobacter to the Pb²⁺ pollution

Xiuju Wu, Qian Cheng

Proceedings Volume 7472, Remote Sensing for Agriculture, Ecosystems, and Hydrology XI; 74721S (2009) https://doi.org/10.1117/12.828457
Event: SPIE Remote Sensing, 2009, Berlin, Germany

Abstract

In the present paper, the spectrum response of Cyanobacter (Chlorella ulgaris) to the stress of heavy metal Pb²⁺ pollution was studied in three spectral ranges of the red edge position(REP) (680-740 nm), the visible spectrum (460-680 nm) and the near infrared spectrum (750-1000 nm). The results indicate that the chlorophyll level reduces with the increase of Pb2+ concentration in medium. With increase of the Pb²⁺ content of Chlorella ulgaris, the spectral reflectivity in visible light and the range of red edge shift ascends, the spectral reflectivity in the near infrared light decreases. The visible light, the near infrared light and the range of red edge shift are fitted much linearly with the logarithm of Pb²⁺ content in Chlorella ulgaris with the high squared regression coefficients of 0.8548, 0.9247 and 0.8475 respectively. The regression models are reliable to estimate the Pb²⁺ content in Chlorella ulgaris.

Citation Download Citation

Xiuju Wu and Qian Cheng "Study on the spectrum response of Cyanobacter to the Pb²⁺ pollution", Proc. SPIE 7472, Remote Sensing for Agriculture, Ecosystems, and Hydrology XI, 74721S (18 September 2009); https://doi.org/10.1117/12.828457

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