Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, CONICET, Mar del Plata, Argentina.
Instituto Multidisciplinario de Biología Vegetal (IMBIV), CONICET - Universidad Nacional de Córdoba, Córdoba, Argentina.
Environ Sci Pollut Res Int. 2019 Jun;26(18):18379-18391. doi: 10.1007/s11356-019-05088-z. Epub 2019 May 1.
The occurrence of persistent organic pollutants (POPs) and polycyclic aromatic hydrocarbons (PAHs) in the atmosphere of six sites with different emission sources in the province of Córdoba, Argentina, was analyzed. The sites included urban, industrial, agricultural, and mountain areas. Samples were collected using passive air samplers (PAS) consisting of polyurethane foam disks (PUF). Samples were analyzed for 12 PAHs, 31 polychlorinated biphenyls (PCBs), 12 organochlorine pesticides (OCPs), and 11 polybrominated diphenyl ethers (PBDEs). The concentrations of PAHs in the atmosphere were elevated at urban sites and were even higher at the industrial site. With respect to OCPs, it was observed that the concentrations of endosulfan were greater at the agricultural site (AGR) (416 ± 4 pg m). For hexachlorocyclohexanes (HCHs), only the alpha isomer was detected and there were minimal differences between the different sampling sites (5.9-13.3 pg m). In the case of dieldrin, the highest concentrations (33.6 pg m) were found at the mountain site, which may have been due to its use for insect control. Although heptachlor epoxide was not detected, the concentration of heptachlor was significantly higher at the agricultural and downtown sites (∼ 3.6 pg m). Regarding DDTs, the isomers p,p'-DDT and p,p'-DDE showed the highest concentrations at the mountain site (ΣDDT 120 ± 12 pg m) and downtown site (ΣDDT 157 ± 62 pg m). The relationship between the isomers suggested that at the downtown site, the contribution of this pesticide to the environment was recent, probably for the control of diseases vectors. The congener pattern of PBDEs was dominated by BDE-47, and BDE-99 at all sites, with the downtown site having the highest concentrations of compound esters (ΣPBDEs 118 ± 38 pg m). Finally, high concentrations of PCBs were found at the industrial site (ΣPCBs 1677 ± 134 pg m), and the predominating homologs were 5-Cl and 6-Cl, in contrast to the other sites where PCBs were dominated by 3-Cl and 4-Cl. This is the first study of POPs carried out in the province of Córdoba.
分析了阿根廷科尔多瓦省六个具有不同排放源的地点（城市、工业、农业和山区）大气中持久性有机污染物（POPs）和多环芳烃（PAHs）的存在情况。使用由聚氨酯泡沫圆盘（PUF）组成的被动空气采样器（PAS）采集样品。对 12 种多环芳烃、31 种多氯联苯（PCBs）、12 种有机氯农药（OCPs）和 11 种多溴二苯醚（PBDEs）进行了分析。在城市地区，大气中的多环芳烃浓度较高，而在工业地区则更高。关于 OCPs，观察到农业地区（AGR）硫丹的浓度更高（416±4 pg m）。对于六氯环己烷（HCHs），仅检测到 α 异构体，不同采样地点之间差异极小（5.9-13.3 pg m）。对于狄氏剂，山区的浓度最高（33.6 pg m），这可能是由于其用于病虫害防治。虽然未检测到七氯环氧化物，但农业和市区的七氯浓度明显更高（约 3.6 pg m）。关于滴滴涕，p,p'-滴滴涕和 p,p'-滴滴伊的异构体在山区（ΣDDT 120±12 pg m）和市区（ΣDDT 157±62 pg m）的浓度最高。异构体之间的关系表明，在市区，这种农药对环境的贡献是最近的，可能是用于控制疾病媒介。所有地点均以 BDE-47 和 BDE-99 为主导，市区的化合物酯浓度最高（ΣPBDEs 118±38 pg m）。最后，在工业地区发现高浓度的多氯联苯（ΣPCBs 1677±134 pg m），优势同系物为 5-Cl 和 6-Cl，而其他地点则以 3-Cl 和 4-Cl 为主。这是科尔多瓦省进行的第一项 POPs 研究。
