The suspended particulate matter (SPM) is an important carrier of heavy metals transportation from land to sea, so it is significant to study the heavy metal pollution in SPM. The distribution and assessment of five heavy metals (Mn, Cr, Ni, Cu, and Pb) in SPM collected from Passur River and its estuary in Sundarban were studied in combination with water temperature, salinity, and turbidity. The results show that the heavy metal content and distribution in SPM are mainly controlled by runoff input, hydrodynamic process and the interaction process of salt and fresh water in estuaries. The quality evaluation results of heavy metals in SPM show that pollution degree is light. Studies on the heavy metals in SPM are of great significance to comprehensively evaluate regional pollution status and carry out early warning.

悬浮颗粒物（SPM）是重金属陆海运输的重要载体，因此研究SPM中的重金属污染具有重要意义。结合水温、盐度和浊度，研究了从巽德尔班巴苏尔河及其河口采集的 SPM 中五种重金属（Mn、Cr、Ni、Cu 和 Pb）的分布和评价。结果表明，SPM中重金属含量和分布主要受径流输入、水动力过程以及河口盐淡水相互作用过程控制。SPM中重金属的质量评价结果表明污染程度较轻。研究SPM中的重金属对综合评价区域污染状况和开展预警具有重要意义。