Fig 1.
Mean percentage viability of Cryptosporidium and Giardia related to UV doses in treatment with spiked samples in distilled water and wastewater samples.
Fig 2.
Mean percentage viability of Cryptosporidium and Giardia at different UV doses using Syto-9+PI and DAPI+PI dyes.
Table 1.
Mean and SD of viability (%) after exposure to chlorine and UV irradiation using microscopy.
Table 2.
Mean and SD of viability (%) of (oo)cysts after exposure to chlorine and UV irradiation using flow cytometry.
Table 3.
Mean percentages of viable Cryptosporidium and Giardia for different UV doses using microscopy.
Fig 3.
Mean percentage viability of Cryptosporidium and Giardia after prolonged exposure to 0.5 ppm, 2 ppm and 5 ppm of chlorine treatments for distilled water and wastewater.
Table 4.
Mean percentages of viable Cryptosporidium and Giardia for different chlorine exposures at different durations using microscopy.
Fig 4.
Mean percentage viability of Cryptosporidium and Giardia at different chlorine exposures using Syto-9+PI and DAPI+PI dyes for distilled water and wastewater (microscopy method).
Table 5.
Comparison between the percentages of viability of (oo)cysts when using microscopy and flow cytometer for UV irradiations.
Table 6.
Comparison between the percentages of viability of (oo)cysts when using microscopy and flow cytometer for chlorine exposures.
Fig 5.
Flow cytometry histogram and dot plots showing viability of Cryptosporidium and Giardia at 40 seconds after exposure to UV irradiation.
Note: Samples of Region P1 and P2 represent gates for non-viable and viable (oo)cysts with P1 as side-scatter (SSC) against forward side-scatter (FSC).
Fig 6.
Flow cytometry histogram and dot plots showing viability of Cryptosporidium and Giardia at 15 seconds after exposure to 5 ppm of chlorine.
Note: Samples of Region P1 and P2 represent gates for non-viable and viable (oo)cysts with P1 as side-scatter (SSC) against forward side-scatter (FSC).