光子相关光谱（PCS）在无机高分子絮凝剂形态表征中的应用

本文运用现代先进的微粒检测手段光子相关光谱对常见的两类无机高分子絮凝剂的形态进行了表征。实验结果表明：在所测聚合氯化铁溶液中，体系呈较为单一的集中分布，由平移扩散系数计算得到平均有效直径在５－１１ｎｍ左右。在所测聚合氯化铝溶液中，主要为双峰分布，熟化后样品约为２－５ｎｍ的小颗粒与数十ｎｍ以上分布较宽的聚集体，另外，本文对光子相关光谱在形态表征中的优缺点及其它应用的可能性也作了一定的论述。

THE PARTICLE SIZE SPECIATION FOR INORGANIC POLYMER FLOCCULANTS BY PHOTON CORRELATION SPECTROSCOPY (PCS)

The particle size speciation for two kinds of inorganic polymer flocculants (IFF) was characterized by PCS technique. The experimental results showed some appearances. The particle size of PFC sample ranged in a narrow distribution. Their mean effective hydrodynamic diameters calculated by transitional diffusion coefficient were between 5-11nm or so. The particle size of PAC samples, both laboratory prepared and commercial product, showed a two-sectional distribution: one in 2-5nm and the other ranged in several decades of nm with wide distribution. The latter may be considered as aggregates of particles.The main merits and defects of PCS in the characterization of IPF were discussed. Some other possible investigations by PCS were proposed for future study.