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Indexed by:会议论文

Date of Publication:2013-12-07

Included Journals:EI、Scopus

Volume:18

Page Number:591-598

Abstract:The toxicity of ammonia to Chironomus riparius (Diptera) was first evaluated in static 48-h test based on OECD 235. The 24- and 48-h LC50 values of ammonia to C. riparius are 347.19 and 246.74 mg/L, respectively. Ammonia was subsequently used in 21-day chronic test which was carried out based on OECD Guideline 219 using a spiked water-sediment system. Test species were exposed to concentrations ranging from 25 to 800 mg/L. The results show that the emergence ratio is the most sensitive indicator with a significant adverse effect (P < 0.05) compared to the solvent control at 50 mg/L. The EC50 value of emergence ratio is 121.94 mg/L. Significant adverse effect (P < 0.05) was also observed compared to the solvent control for developmental ratio at 200 mg/L. The toxicity test provides additional information, which might develop toxicity database and be useful in the risk assessment of ammonia. ? 2014 WIT Press.