深圳市总膳食中16种邻苯二甲酸酯的污染分布

Distribution of 16 Phthalic Acid Esters Pollution in Shenzhen Total Diet

为深入了解深圳市居民膳食中邻苯二甲酸酯类物质的污染分布规律,利用总膳食研究方法对深圳市膳食样品进行处理,采用气相色谱-质谱法分析膳食混样及单样中的16种邻苯二甲酸酯类含量,评估其污染状况。结果显示,混合膳食样品中深圳市城区的DMP、DBP、DIBP、DEP及DEHP的最高含量分别为0.0672,0.3304,0.3590,0.4537,0.4588 mg/kg;农村区DMP、DBP、DIBP、DEP及DEHP的最高含量分别为0.4347,1.8357,0.5051,0.0909,6.1565 mg/kg。城区DEP、DEHP的污染较DMP、DIBP及DBP污染严重,农村区DBP、DEHP的污染较严重。薯类及制品、肉类及制品、蛋类及制品和水产类及制品4类食品的PAEs的污染程度相对较高。单个样品中,黄鳝中DEP的污染程度最高,为14.5378 mg/kg;马铃薯片中DMP的含量最高,为0.8525 mg/kg;鲫鱼中DEHP的含量最高,为13.3437 mg/kg;鹌鹑蛋中DIBP和DBP污染程度较高,分别为0.8562,2.3118mg/kg。相比于国内外报道的数据,深圳市膳食中PAEs整体污染处于较低水平。

The aim of the present study was to investigate the distribution of phthalic acid esters pollution in total diet of Shenzhen population. Dietary exposure was achieved based on made food samples from Shenzhen total diet study. Gas chromatography-mass spectroscopy （GC-MS） methods were established to determine 16 phthalic acid esters from mixed samples and Single sample after sample pre-treatment, then the contents of phthalate pollution in samples were estimated. The results showed that the highest levels of DMP, DBP, DIBP, DEP and DEHP from the mixed diet samples in urban area were 0.0672, 0.3304, 0.3590, 0.4537, 0.4588 mg/kg respectively; and that of DMP, DBP, DIBP, DEP and DEHP in suburban area were 0.4347, 1.8357, 0.5051, 0.0909, 6.1565 mg/kg respectively. The contamination levels of DEP and DEHP were more serious compared with DMP, DIBP and DBP in urban area while the contamination levels of DBP and DEHP were higher than DEP, DMP and DIBP in urban area. In the whole, pollution levels of g kinds of mixed samples such as potatoes, meats, eggs, aquatic and products were higher than others. For the single sample, the eel had the highest DEP concentration among the detected foods （14.5378 mg/kg）. Also potato chip had the highest DMP level （0.8525 mg/kg）, the crucian carp had the highest DEHP level （13.3437 mg/kg） and the quail eggs had highest DIBP and DBP levels （0.8562 mg/kg and 2.3118 mg/kg）. Compared with other reported data from homeland and abroad, overall dietary contamination of phthalic acid esters for Shenzhen was kept at a low level.