硝酸盐及亚硝酸盐对三唑磷在海水中光降解的影响  

THE EFFECTS OF NITRATE AND NITRITE ON PHOTOCHEMICAL DEGRADATION OF TRIAZOPHOS IN SEAWATER

作　　者：陈容[1] 孟春霞[1] 张慧玲[1] 

机构地区：[1]中国海洋大学化学化工学院,山东青岛266100

出　　处：《海洋湖沼通报》2010年第3期121-125,共5页Transactions of Oceanology and Limnology

基　　金：国家自然科学基金项目(40876037)资助

摘　　要：研究了高压汞灯照射下硝酸盐及亚硝酸盐对天然海水中三唑磷光降解的影响情况。实验发现：在300 W高压汞灯照射下,在天然海水中,三唑磷降解速率受硝酸盐及亚硝酸盐等因素的影响,且降解均符合一级动力学规律;在三唑磷水溶液中分别添加浓度为0.1,1,2,4mg/L的NO3-及NO2-,均不同程度地抑制三唑磷的光降解速率,且其抑制作用均随NO3-及NO2-添加浓度的增大而增强,三唑磷的光降解速率常数（k）的变化范围为0.00394~0.00861 min-1。The effects of nitrate and nitrite on photochemical degradation of triazophos in natural seawater（NSW） were studied under the irradiation of high-pressure mercury lamp（HPML） in this study.The result showed that the photo degradation rates of triazophos were influenced by nitrate and nitrite in NSW under the irradiation of 300W HPML,which showed the first-order reaction kinetic behavior.The addition of nitrate and nitrite（0.1,1,2,and 4mg/L,etc,respectively） to the triazophos aqueous solutions could restrain the photo-degradation rates of triazophos and the restraining degree was enhanced with the increasing concentration of nitrate and nitrite,the rate constants（k） of triazophos varied from 0.00394 to 0.00861min-1.

关 键 词：三唑磷 光化学降解 硝酸盐 亚硝酸盐 海水 

分 类 号：P714.4[天文地球—海洋科学]