以溢油污染潮间带大型底栖动物无齿螳臂相手蟹为对象,研究其体内TPH含量分布及动态变化,并开展健康风险评估,判断污染区域生态系统修复与恢复措施的有效性,从而为类似溢油事故的处理处置提供参考.分别在采取应急处置后、应急处置1 a后和二次修复1 a后采集了沉积物和相关生物体样品,采用紫外分光光度法和荧光分光光度法测得TPH含量.结果表明,二次修复1 a后生物体内脏和肌肉组织中TPH含量较应急处置1 a后呈显著下降趋势(p<0.05),分别下降了64.28%~83.81%和27.44%~48.02%,生物体内脏组织中TPH含量明显高于肌肉组织,且二者呈现显著正相关关系(p<0.01).二次修复1 a后生物体内脏和肌肉组织中TPH含量与应急处置后沉积物中TPH含量呈明显的线性关系(y=0.001x+4.3831,R2=0.9089;y=0.0004x+1.7744,R2=0.8705),表明溢油事故造成的沉积物污染是影响生物体内TPH累积的一个重要因素.同时,人体健康风险评估结果显示,应急处置1 a后和二次修复1 a后生物体体内的TPH暴露风险指数均处于可接受水平,采取二次修复后,暴露风险指数有明显下降趋势,较应急处置后下降了62.81%~82.31%.研究结果表明应急和修复措施均取得了一定效果,可为今后类似事故处理处置提供参考. In order to study the distribution and dynamic changes of TPH content in macro-zoobenthos herring crabs, and to conduct health risk assessment to determine the effectiveness of restoration and restoration measures of ecosystem in contaminated areas. Which can provide a reference for the treatment and disposal of similar oil spill accidents.After the emergency treatment was taken, the sediments and related biological samples were collected after 1-day emergency treatment and 1-second remediation, and the UV spectrophotometry and fluorescence spectrophotometry The results showed that the TPH content in visceral and muscular tissue of organism decreased significantly (P <0.05) after 1-year re-treatment after 1-year secondary recovery, decreased by 64.28% -83.81% and 27.44% ~ 48.02%, the content of TPH in visceral tissues was significantly higher than that in muscle tissues (P <0.01), and the content of TPH in visceral and muscular tissues of organism after secondary repair was The TPH content in the sediment showed a significant linear relationship (y = 0.001x + 4.3831, R2 = 0.9089; y = 0.0004x + 1.7744, R2 = 0.8705), indicating that the sediment pollution caused by the oil spill is the impact of TPH accumulation in vivo An important factor at the same time, The results of body health risk assessment showed that the risk indices of TPH exposure in vivo were all within acceptable levels after 1-day emergency treatment and after 1-second remediation. The exposure risk index decreased significantly after secondary remediation, And then decreased by 62.81% ~ 82.31% .The results show that both emergency and repair measures have achieved some results, which can provide reference for similar accident treatment and disposal in the future.