滩涂红树林种植-养殖耦合系统水产品中多环芳烃含量水平分析

PAHs Concentrations in Aquatic Products and Food Safety Evaluation in the Coupled Mangrove Planting-Aquaculture Ecological System

为了掌握滩涂红树林种植-养殖耦合系统中水产品中多环芳烃的污染情况,保证系统中水产品的品质和食用安全,采用高效液相色谱仪检测了系统中秋茄、桐花树和木榄等养殖塘罗非鱼、鲻鱼和牡蛎体内的13种多环芳烃(polycyclic aromatichydrocarbons,PAHs)[Fluorene(Flu)、Phenanthrene(Phe)、Anthracene(Ant)、Fluoranthene(Fla)、Pyrene(Pyr)、Benz[a]anthraces(BaA)、Chrysene(Chr)、Benzo[b]fluoranthene(BbF)、Benzo[k]fluoranthene(BkF)、Benzo[a]Pyrene(BaP)、Dibenzo[a,h]anthercene(DahA)、Benzo[g,h,i]perylene(BghiP)、Indeno[1,2,3-c,d]pyrene(InP)],分析研究其污染水平并进行食品安全评价.结果表明,牡蛎体内的TPAHs含量最高,干重浓度范围在89.79～98.49μg.kg-1之间;鲻鱼次之,干重浓度范围在25.97～34.64μg.kg-1之间;罗非鱼的TPAHs含量最低,干重浓度范围在12.31～14.41μg.kg-1之间.3环PAHs是主要组成成分,占TPAHs的41.58%～83.35%.脂肪含量是影响不同种类水产品间TPAHs浓度水平的因素.与国内其它地区相比,研究区域水产品内PAHs污染处于轻度的污染水平.3类水产品的湿重等效ΣBaP浓度值在0.068 9～1.037 3μg.kg-1之间,符合欧盟对苯并[a]芘的限值要求.研究区域水产品内PAHs在安全食用范围内.

In order to know about the PAHs concentration in aquatic products from mangrove planting-aquaculture ecological system and to make sure of food quality and food safety,HPLC was used to determine concentrations of 13 polycyclic aromatic hydrocarbons(PAHs) in the Tilapia mossambica,Mugil cephalu and Concha ostreae from coupled mangrove planting-aquaculture ponds,food safety in aquatic products was also evaluated.The 13 PAHs were Fluorene(Flu),Phenanthrene(Phe),Anthracene(Ant),Fluoranthene(Fla),Pyrene(Pyr),Benz[a]anthraces(BaA),Chrysene(Chr),Benzo[b]fluoranthene(BbF),Benzo[k]fluoranthene(BkF),Benzo[a]Pyrene(BaP),Dibenzoanthercene(DahA),Benzoperylene(BghiP) and Indeno[1,2,3-c,d]pyrene(InP).Concentrations of PAHs were the highest in Concha ostreae which were in the range of 89.79-98.49 μg·kg-1 dry weight,while those were in the range of 25.97-34.64 μg·kg-1 in Mugil cephalu and 12.31-14.41 μg·kg-1 in Tilapia mossambica.The content of fat affected the levels of PAHs content in different aquatic products.The individual composition of PAHs was characterized by 3 rings in samples with the range of 41.58%-83.35%.Comparing with other areas,PAHs pollution of aquatic products in the studied area was in the mild level.Values of the total BaPeq concentration ranged from 0.068 9 μg·kg-1 to 1.037 3 μg·kg-1,which were lower than the maximum level set by European Union.