【摘要】 探讨了优氯净 (成分为有效氯 )在水中的衰减、对主要水化学成分的影响和对稚鲍的毒性及杀菌作用。结果表明 ,有效氯浓度在海水中的衰减速度遵循有效氯含量 -时间幂指数关系 :C =at-b (a ,b >0 )。优氯净具有较强的水质净化能力 ,能有效地去除氨氮、亚硝酸氮及降低化学耗氧量。pH为 8 0 1时 ,优氯净对稚鲍的 2 4、 48、 72、 96h的LC50 分别为 5 75、 2 90、 2 0 0、 1 71mg/L (有效氯 ) ,0 5、 2h的LC50 为 5 2 72、2 2 80mg/L (有效氯 )。pH对优氯净的毒性大小有很大影响。优氯净作用 1、 4、 1 2h时 ,杀死 90 %以上育鲍海水中细菌的最低有效氯量分别为 5 5 2、 3 79、 1 36mg/L。建议单独用 1 0mg/L的有效氯浓度对育鲍水体进行消毒。如果对鲍鱼和水体一并消毒 ,就必须严格控制用药浓度及时间更多还原

【Abstract】 Decrease in available chlorine of sodium dichloroisocyanurate and its influence on the main chemical composition,toxicity to juvenile abalone(\%Haliotis discus\% hainai)and bactericidal properties were examined The results showed that the decrease rate of available chlorine in seawater abided by available chlorine time relationship: C=at b (a,b>0) Chlorine had good popularity for water purification,it could remove ammonia, nitrogen and nitrite nitrogen and decrease chemical oxygen demand When pH is 8 01, 24,48,72 h and 96h, medial lethal concentration of sodium dichloroisocyanurate to juvenile abalone were 5 75,2 90,2 00 and 1 71 mg/L, 0 5,2 h’s were 52 72 and 22 80 mg/L TRC pH was highly correlated with toxicity Bacteria were highly sensitive to chlorine When exposure times were 1 h,4 h and 12 h the lowest total residual chlorine concentrations to distroy above 90% of bacteria were 5 52,3 79 and 1 36 mg/L TRC respectively 10 mg/L available chlorine concentration is proposed to disinfect alone更多还原