摘要：Recently the amounts of various kinds of wastes have increased, as the industrial production has increased and the living standard has elevated in our country. Consequently, the environmental pollutions have advanced all over the country. In an investigation of the environmental pollution, aquatic sediments are found to be useful because hazardous substances are often adsorbed and concentrated in sediments. Perhaps heavy metals are most extensively studied in hazardous substances. In this review, the emphasis is placed the extraction techniques of heavy metals from sediments, the distribution of heavy metals in sediments, and the evaluation of pollution by heavy metals.
关键词：aquatic sediment;water pollution;sediment pollution;heavy metal;metal extraction;metal distribution;background level of metal
