Algal suspensions were collected from the Chaohu
Lake (Hefei, China) when algal blooms occurred and
then configured with deionized water as controls
(A680 nm00.15, pH 7.0). The water quality data are
shown in Table 2. The absorbance of the water samples
was measured with a TU-1901 double-beam UV–Vis
spectrophotometer (Shimadzu).