An integrated assessment of lean fish of commercial value as Hg and organochlorine compound source into the population of the Balearic Islands were reported. Dependences between pollutant concentrations, trophic level, fish species, specimen weight and physical-chemical properties were evaluated.

Hg and total DDTs showed highest variability between fish species whereas PCBs and HCB displayed more constant median values. The organochlorine compounds found in highest concentrations were those with highest hydrophobicity, consistently with their higher bioaccumulation potential. These pollutant concentrations were higher in Mediterranean than Atlantic fish. Higher median total DDT and PCBs concentrations were also observed in the third than the second trophic level species. The observed concentrations were below the threshold recommended by the EU for human consumption (75 ng/g wet weight).

The Hg concentrations were higher in Mediterranean than Atlantic fish, with average values of 1.5 μg/g ww and 0.43 μg/g ww, respectively. Forty-one percent of the specimens from the Mediterranean and 25% of dusky grouper specimens from the Atlantic Ocean showed Hg concentrations above the EU recommended limits for human consumption, either 0.5 μg/g ww or 1 μg/g ww.

In the third trophic level, a significant dependence between median Hg concentrations and weight of each studied species was observed, which remained significant in specimen weight correlations. Independent species correlations of Hg concentrations vs individual weight generally showed higher concentrations at higher weight. Weight/size of the individuals was therefore an important factor for Hg accumulation but the trend was modulated by a species effect.

Extrapolation of the observed Hg concentrations in Mediterranean fish to Provisional Tolerable Weekly Intakes (PTWIs) showed higher intakes than the thresholds recommended by EFSA for adults and children, 110% and 140%, respectively. The estimated PTWIs for MeHg corresponded to 310% and 400% of the recommended threshold values. The PTWI values for organochlorine compounds were lower than those recommended.

报告了对作为巴利阿里群岛人口的汞和有机氯化合物来源的商业价值的瘦鱼的综合评估。评估污染物浓度，营养水平，鱼类种类，标本重量和理化性质之间的相关性。

汞和总滴滴涕显示出鱼类之间最大的变异性，而多氯联苯和六氯苯显示出更恒定的中值。发现最高浓度的有机氯化合物是疏水性最高的化合物，与其更高的生物蓄积潜力一致。在地中海，这些污染物的浓度高于大西洋鱼类。在第三个营养级物种中，也观察到第三种中较高的总DDT和PCBs浓度中值。观察到的浓度低于欧盟建议的人类消费阈值（75 ng / g湿重）。

地中海地区的汞含量高于大西洋鱼类，平均值分别为1.5μg/ g ww和0.43μg/ g ww。来自地中海的41％的标本和来自大西洋的25％的暗石斑鱼标本的汞浓度均超过了欧盟建议的人类食用限量，即0.5μg/ g ww或1μg/ g ww。

在第三营养级，观察到汞中位数浓度与每种研究物种的重量之间存在显着相关性，这在标本重量相关性中仍然显着。汞浓度与个体重量的独立物种相关性通常显示出较高重量下的较高浓度。因此，个体的体重/体型是汞积累的重要因素，但这种趋势受物种效应调节。

将地中海鱼类中观测到的汞浓度外推至暂定每周耐受摄入量（PTWI）显示，成人和儿童的摄入量均高于欧洲食品安全局推荐的阈值，分别为110％和140％。MeHg的估计PTWI分别对应建议阈值的310％和400％。有机氯化合物的PTWI值低于建议值。