Physicochemical and morphological characterisation of nanoparticles from photocopiers: implications for environmental health
Physicochemical and morphological characterisation of nanoparticles from photocopiers: implications for environmental health
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DOI：
10.3109/17435390.2012.689883
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发表时间：
2013-08-01
期刊：
影响因子：
5
通讯作者：
Demokritou, Philip
中科院分区：
文献类型：
--
作者：
Bello, Dhimiter;Martin, John;Demokritou, Philip
一些报告将打印和复印与遗传毒性、免疫和呼吸系统疾病联系起来。复印机和打印机会释放出纳米粒子，这些纳米粒子可能与这些疾病有关。这些发射的纳米颗粒的物理化学和形态学组成，这是知之甚少，是毒理学评价的关键，在本研究中使用实时仪器和分析方法进行了评估。测试包括元素组成（40种金属）、半挥发性有机物（100种化合物）和使用多种高灵敏度/分辨率技术的单颗粒分析。对从复印机排气过滤器收集的墨粉和灰尘进行了相同的分析。工程纳米粒子，包括二氧化钛，氧化铁和气相二氧化硅，以及几种金属被发现在墨粉和空气中的纳米级部分。空气中纳米级部分的化学组成是复杂的，反映了墨粉的化学性质。这些发现对于了解此类纳米颗粒的起源和毒理学非常重要。需要进一步调查其化学性质，进行更大规模的暴露研究，并对发射的纳米颗粒进行彻底的毒理学表征。
Several reports link printing and photocopying with genotoxicity, immunologic and respiratory diseases. Photocopiers and printers emit nanoparticles, which may be involved in these diseases. The physicochemical and morphological composition of these emitted nanoparticles, which is poorly understood and is critical for toxicological evaluations, was assessed in this study using both real-time instrumentation and analytical methods. Tests included elemental composition (40 metals), semi-volatile organics (100 compounds) and single particle analysis, using multiple high-sensitivity/resolution techniques. Identical analyses were performed on the toners and dust collected from copier's exhaust filter. Engineered nanoparticles, including titanium dioxide, iron oxide and fumed silica, and several metals were found in toners and airborne nanoscale fraction. Chemical composition of airborne nanoscale fraction was complex and reflected toner chemistry. These findings are important in understanding the origin and toxicology of such nanoparticles. Further investigation of their chemistry, larger scale exposure studies and thorough toxicological characterisation of emitted nanoparticles is needed.