Cautela Domenico, Castaldo Domenico, Santelli Francesca, Laratta Bruna, Pirrello Antonio Giorgio, Malorni Antonio, Boscaino Floriana
Laboratorio Diossine e Microinquinanti Organici, Stazione Sperimentale per le Industrie delle Essenze e dei derivati dagli Agrumi (SSEA), via Gen. Tommasini 2, 89127 Reggio Calabria, Italy.
J Agric Food Chem. 2007 Feb 21;55(4):1627-37. doi: 10.1021/jf062622v. Epub 2007 Jan 24.
Investigation of PCDDs, PCDFs, PCBs, Al, As, Pb, Ba, Co, Cu, Cr, Fe, Mn, Cd, Ag, Sn, Zn, and Hg contents in 60 samples of cold-pressed essential oils produced in Calabria and Sicily in 2003-2005 was carried out. PCDDs, PCDFs, and PCBs were analyzed by HRGC-HRMS techniques using U.S. EPA 1613/94 and U.S. EPA 1668/A (1999) analytical methods. Mineral components were determined through GFAAS techniques; Hg content was determined by FI-M/H-AAS. The results of this study showed that essential oil contamination was due to a widespread pollution, typical background of rural areas, with relatively higher concentrations of PCDDs compared to PCDFs and little presence of PeCDF. Congeners OCDD, HpCDF, and OCDF were found at high concentrations. Regarding mineral components, mean values of Cr, Fe, and Ni were in agreement with data reported in the literature. Concentrations of As and Pb were below the maximum limits accepted by the current legislation. Finally, none of the samples analyzed were contaminated with Hg.
对2003年至2005年在卡拉布里亚和西西里岛生产的60个冷榨香精油样品中的多氯二苯并二恶英（PCDDs）、多氯二苯并呋喃（PCDFs）、多氯联苯（PCBs）、铝（Al）、砷（As）、铅（Pb）、钡（Ba）、钴（Co）、铜（Cu）、铬（Cr）、铁（Fe）、锰（Mn）、镉（Cd）、银（Ag）、锡（Sn）、锌（Zn）和汞（Hg）含量进行了调查。采用美国环境保护局（U.S. EPA）1613/94和U.S. EPA 1668/A（1999）分析方法，通过高分辨率气相色谱-高分辨率质谱（HRGC-HRMS）技术对PCDDs、PCDFs和PCBs进行分析。通过石墨炉原子吸收光谱法（GFAAS）技术测定矿物成分；汞含量通过流动注射-氢化物发生-原子吸收光谱法（FI-M/H-AAS）测定。本研究结果表明，香精油污染是由于普遍存在的污染，这是农村地区的典型背景，与PCDFs相比，PCDDs浓度相对较高，且很少有五氯二苯并呋喃（PeCDF）存在。发现八氯二苯并二恶英（OCDD）、七氯二苯并呋喃（HpCDF）和八氯二苯并呋喃（OCDF）的同系物浓度较高。关于矿物成分，铬、铁和镍的平均值与文献报道的数据一致。砷和铅的浓度低于现行法规允许的最大限值。最后，所分析的样品均未被汞污染。
