中文摘要：

为了研究蓝藻水华期间释放的有机物给原水水质及给水处理过程带来的影响，选取优势藻种铜绿微囊藻的胞内物质（IOM）作为前驱体，分析了其结构特征．此外，分别研究了IOM在pH6．5、7．1及8．4条件下与氯及溴反应后性质的变化及消毒副产物的生成，并进行了相关性分析．结果表明，IOM中以相对分子质量较大的组分（〉30×10^3）为主，其溶解性有机碳（DOC）含量占总量的68．8％．三维荧光光谱（EEM）的结果表明IOM的成分主要以芳香蛋白类物质为主，其单位DOC的荧光强度为92．6AU·L·mg-1．与氯或溴反应后，芳香蛋白类EEM峰值下降了76．6％～93．3％，且其降低值与三卤甲烷（THMs，R2=0．81）和卤乙酸（HAAs，R2=0．77）的生成量正相关．ION与氯或溴反应生成的THMs和HAAs浓度均随着pH的增加而增加．溴相比氯与IOM反应可以生成更多的THMs和HAAs，且HAAs的卤代程度更高，但是氯及溴与IOM反应能力的差异随着pH的升高而逐渐减小，即kOBr·IOM／kOCl·IOM〈kHOBr·IOM／kHOCl·IOM.

英文摘要：

In order to illustrate the effects of released algal organic matter in cyanobacteria blooms on raw water quality and water treatment process, intracellular organic matter （IOM） of Microcystis aeruginosa, which is the dominant species in eyanobacteria blooms, was chosen as a precursor and characterized. In addition, the transformation of IOM and the formation of disinfection by- products were evaluated at different pH of 6.5, 7. 1 and 8.4 after chlorination or bromination, with subsequent correlation analysis. The results indicated that IOM was primarily composed of macromolecular matter, i. e. , the species with relative molecular weight of 〉 30 × 10^3 , constituting 68.8% of dissolved organic carbon （DOC）. Fluorescence excitation-emission matrix indicated that IOM was mainly composed of aromatic protein-like matter with an intensity of 92.6 AU.L.mg-1. After reaction with chlorine or bromine, the intensity of aromatic protein-like peaks decreased sharply by 76. 6% -93.3% , and its reduction correlated well with the formation of trihalomethane （THMs, R2 =0. 81 ） and haloacetie acid （HAAs, R2 =0.77）. The formation of THMs and HAAs increased with the increase in pH. Compared with chlorine, bromine formed more THMs and HAAs, and tended to form highly halogenated HAAs. However, with increasing pH, the reactivity with IOM between chlorine and bromine was closer, i. e, kOBr·IOM/kOCl·IOM〈kHOBr·IOM/kHOCl·IOM.