Table of Contents
Toxics, Volume 5, Issue 2 (June 2017)
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Cover Story (view full-size image) Untreated pharmaceutical wastewater causes water pollution. Phytotoxicity of metronidazole to [...] Read more. Untreated pharmaceutical wastewater causes water pollution. Phytotoxicity of metronidazole to soybean plants (Glycine max) was investigated. Healthy plants assigned to 3 treatment groups (0 mg/L, 50 mg/L, 100 mg/L) were exposed to designated concentration of metronidazole at 42d after planting. The relationship between metronidazole concentration and phytotoxicity was determined. Phytotoxicity was quantified by relative growth rate (RGR) expressed in grams per gram per day (gg-1d-1). Multiple comparisons demonstrates statistically significant differences in RGR between control and treatment plants: control and 50mg/L (p < 0.025); control and 100mg/L (p < 0.0001); 50mg/L and 100mg/L (p < 0.0001). Phytotoxicity increased with increasing metronidazole concentration. View this paper