Departamento de Ingeniería Mecánica y Construcción, Universitat Jaume I de Castellón, Av. de Vicent Sos Baynat s/n, 12071 Castellón de la Plana, España, Spain.
Waste Manag. 2012 May;32(5):944-8. doi: 10.1016/j.wasman.2011.12.001. Epub 2011 Dec 27.
In this study, spent compact fluorescent lamps were characterized to determine the distribution of mercury. The procedure used in this research allowed mercury to be extracted in the vapor phase, from the phosphor powder, and the glass matrix. Mercury concentration in the three phases was determined by the method known as cold vapor atomic absorption spectrometry. Median values obtained in the study showed that a compact fluorescent lamp contained 24.52±0.4ppb of mercury in the vapor phase, 204.16±8.9ppb of mercury in the phosphor powder, and 18.74±0.5ppb of mercury in the glass matrix. There are differences in mercury concentration between the lamps since the year of manufacture or the hours of operation affect both mercury content and its distribution. The 85.76% of the mercury introduced into a compact fluorescent lamp becomes a component of the phosphor powder, while more than 13.66% is diffused through the glass matrix. By washing and eliminating all phosphor powder attached to the glass surface it is possible to classified the glass as a non-hazardous waste.
本研究对废旧紧凑型荧光灯进行了特征描述，以确定汞的分布。本研究中使用的方法允许汞以蒸气相的形式从荧光粉和玻璃基质中被提取出来。通过冷蒸气原子吸收光谱法确定了这三个相中汞的浓度。研究中获得的中位数表明，一盏紧凑型荧光灯中的汞在蒸气相中含量为 24.52±0.4ppb，在荧光粉中为 204.16±8.9ppb，在玻璃基质中为 18.74±0.5ppb。由于制造年份或运行时间会影响汞含量及其分布，因此不同灯具中的汞浓度存在差异。进入紧凑型荧光灯的汞有 85.76%成为荧光粉的组成部分，而超过 13.66%则通过玻璃基质扩散。通过清洗并去除附着在玻璃表面的所有荧光粉，可以将玻璃归类为无害废物。
