Dipartimento di Scienze e Tecnologie Biologiche, Chimiche, Farmaceutiche, Università di Palermo, Parco Orleans II, Palermo, Italy.
Environ Geochem Health. 2013 Oct;35(5):613-24. doi: 10.1007/s10653-013-9544-9. Epub 2013 Jun 27.
In this work, phthalic acid esters (PAEs): dimethyl phthalate (DMP), diethyl phthalate (DEP), di-n-butyl phthalate, benzyl butyl phthalate, bis(2-ethylhexyl) phthalate, and di-n-octyl phthalate in indoor dust (used as passive sampler) were investigated. The settled dust samples were collected from thirteen indoor environments from Palermo city. A fast and simple method using Soxhlet and GC-MS analysis has been optimized to identify and quantify the phthalates. Total phthalates concentrations in indoor dusts ranged from 269 to 4,831 mg/kg d.w. (d.w. = dry weight). The data show a linear correlation between total PAEs concentration and a single compound content, with the exclusion of the two most volatile components (DMP and DEP) that are present in appreciable amounts only in two samples. These results suggest that most of the PAEs identified in the samples of settled dust originate from the same type of material. This evidence indicates that, in a specific indoor environment, generally is not present only one compound but a mixture having over time comparable percentages of PAEs. Consequently, for routine analyses of a specific indoor environment, only a smaller number of compounds could be determined to value the contamination of that environment. We also note differences in phthalate concentrations between buildings from different construction periods; the total concentration of PAEs was higher in ancient homes compared to those constructed later. This is due to a trend to reduce or remove certain hazardous compounds from building materials and consumer goods. A linear correlation between total PAEs concentration and age of the building was observed (R = 0.71).
本工作研究了室内灰尘（用作被动采样器）中的邻苯二甲酸酯（PAEs）：邻苯二甲酸二甲酯（DMP）、邻苯二甲酸二乙酯（DEP）、邻苯二甲酸二正丁酯、邻苯二甲酸苄丁酯、邻苯二甲酸二（2-乙基己基）酯和邻苯二甲酸二正辛酯。从巴勒莫市的 13 个室内环境中收集了沉降灰尘样本。优化了一种使用索氏提取和 GC-MS 分析的快速简单方法，以鉴定和定量分析邻苯二甲酸酯。室内灰尘中的总邻苯二甲酸酯浓度范围为 269 至 4831 mg/kg 干重（d.w. = 干重）。数据显示总 PAEs 浓度与单一化合物含量之间存在线性相关性，除了两种最易挥发的成分（DMP 和 DEP）外，这两种成分仅在两个样本中含量较高。这些结果表明，在所采集的沉降灰尘样本中鉴定出的大多数 PAEs 源自同一类型的物质。这一证据表明，在特定的室内环境中，通常不仅存在一种化合物，而是存在一种混合物，随着时间的推移，其 PAEs 的比例相当。因此，对于特定室内环境的常规分析，只需要确定少数几种化合物即可评估该环境的污染程度。我们还注意到不同建筑时期建筑物之间的邻苯二甲酸酯浓度存在差异；与后来建造的房屋相比，古老房屋中的 PAEs 总浓度更高。这是由于从建筑材料和消费品中减少或去除某些有害物质的趋势所致。观察到总 PAEs 浓度与建筑物年龄之间存在线性相关性（R = 0.71）。
