Sun Xing-Bin, Cui Fu-Yi, Guo Zhao-Hai
School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
Huan Jing Ke Xue. 2007 Nov;28(11):2569-73.
The toxic effect of chlorine dioxide to the different instar larvae of chironomid was studied using raw water as test sample. Furthermore, the effect of temperature and contact time on toxicity of chlorine dioxide was observed. It was found that chlorine dioxide possessed significantly toxic effect, and the LC50 value of chlorine dioxide to the 4th instar larvae was 0.41 mg/L(24 h). The toxicity of chlorine dioxide declined with the development of instar larvae. The 1st instar larvae was most sensitive to chlorine dioxide among the four instars, and the LC50 value of chlorine dioxide to the 4th instar was 1.78 times of that of the 1st instar larvae. Temperature was proved to have significant positive effect on chlorine dioxide toxicity, and the toxicity at 30 degrees C was 2.16 times of that at 15 degrees C. The toxicity of chlorine dioxide was significantly improved with the contact time increasing from 12 h to 24 h, while it did not make much difference with the contact time increasing to 36 h.
以原水为试验样品，研究了二氧化氯对摇蚊不同龄期幼虫的毒性作用。此外，还观察了温度和接触时间对二氧化氯毒性的影响。结果表明，二氧化氯具有显著的毒性作用，二氧化氯对四龄幼虫的LC50值为0.41mg/L（24h）。二氧化氯的毒性随幼虫龄期的增加而降低。在四个龄期中，一龄幼虫对二氧化氯最为敏感，二氧化氯对四龄幼虫的LC50值是一龄幼虫的1.78倍。温度对二氧化氯毒性有显著的正影响，30℃时的毒性是15℃时的2.16倍。随着接触时间从12h增加到24h，二氧化氯的毒性显著提高，而接触时间增加到36h时，毒性变化不大。
