Development and evaluation of sediment quality guidelines for Florida coastal waters
Development and evaluation of sediment quality guidelines for Florida coastal waters
复制标题
DOI：
10.1007/bf00118995
复制
发表时间：
1996-08-01
期刊：
影响因子：
2.7
通讯作者：
Ingersoll, CG
中科院分区：
文献类型：
--
作者：
MacDonald, DD;Carr, RS;Ingersoll, CG
对制定沉积物质量指南(SQGs)的证据权重方法进行了修改，以支持佛罗里达沿海水域基于生物效应的SQGs的推导。其中包括9种痕量金属、13种单一的多环芳烃(PAHs)、3组多环芳烃、总多氯联苯(PCbs)、7种农药和1种邻苯二甲酸酯。对于每种物质，计算阈值效应水平(TEL)和可能效应水平(PEL)。这两个值定义了三个化学浓度范围，包括(1)很少，(2)偶尔或(3)经常与不良反应相关的那些。然后对质量控制组进行评估，以确定它们与其他指南的一致性程度(可比性指标)以及每个浓度范围内不良反应的发生率百分比(可靠性指标)。准则还被用来对从佛罗里达和墨西哥湾不同地点收集的沉积物样本进行分类(使用二分法：有毒的，超过PEL的一种或多种，或无毒的，没有超过TEL的)，然后使用对相同沉积物样本进行的生物测试结果来评估这些预测的准确性。事实证明，所产生的质量标准为评估佛罗里达州和美国东南部其他地区的沉积物质量提供了实用、可靠和可预测的工具。
The weight-of-evidence approach to the development of sediment quality guidelines (SQGs) was modified to support the derivation of biological effects-based SQGs for Florida coastal waters. Numerical SQGs were derived for 34 substances, including nine trace metals, 13 individual polycyclic aromatic hydrocarbons (PAHs), three groups of PAHs, total polychlorinated biphenyls (PCBs), seven pesticides and one phthalate ester. For each substance, a threshold effects level (TEL) and a probable effects level (PEL) was calculated. These two values defined three ranges of chemical concentrations, including those that were (1) rarely, (2) occasionally or (3) frequently associated with adverse effects. The SQGs were then evaluated to determine their degree of agreement with other guidelines (an indicator of comparability) and the percent incidence of adverse effects within each concentration range (an indicator of reliability). The guidelines also were used to classify (using a dichotomous system: toxic, with one or more exceedances of the PELs or non-toxic, with no exceedances of the TELs) sediment samples collected from various locations in Florida and the Gulf of Mexico, The accuracy of these predictions was then evaluated using the results of the biological tests that were performed on the same sediment samples. The resultant SQGs were demonstrated to provide practical, reliable and predictive tools for assessing sediment quality in Florida and elsewhere in the southeastern portion of the United States.