During the spring in 2004, the author collected Bullacta exarata (Philippi, 1848 ) from six areas where are especially rich in this kind of resource, and analyzed their content of heavy metal.

• 2004年春季；在上海泥螺分布较集中的区域内；选取6个不同样点；采集泥螺样品；对其进行重金属污染分析.