Sukandar Sukandar, Yasuda Kenji, Tanaka Masaru, Aoyama Isao
Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima, Naka, Okayama City, Okayama 700-8530, Japan.
Environ Pollut. 2006 Dec;144(3):726-35. doi: 10.1016/j.envpol.2006.02.010. Epub 2006 Apr 24.
This paper presents the results from a study of metals leachability of medical waste incinerator fly ash in Japan on the basis of particle size. Sequential extraction and Toxicity Characteristic Leaching Procedure (TCLP) analysis were carried out in order to quantify the leaching amount of metals in each categorized particle size. Sequential extraction was also subjected to identify the preference of binding matrix of metals. The results of sequential extraction showed an increase both exchangeable and carbonate associated chromium concentrations in the bigger particle size fractions. Likewise, concentrations of carbonate matrix of arsenic and tin tended to increase in the bigger particle size fractions. In contrast, exchangeable associated cadmium as well as both exchangeable and carbonate matrices of barium were found higher in the smaller particle size fractions. However, no correlation was found in Kendal-tau correlation analysis between particle size of the ash and metals leachability of the TCLP.
本文介绍了基于粒径对日本医疗废物焚烧炉飞灰中金属浸出性的研究结果。为了量化各分类粒径中金属的浸出量，进行了顺序提取和毒性特性浸出程序（TCLP）分析。还进行了顺序提取以确定金属的结合基质偏好。顺序提取结果表明，较大粒径部分中可交换态和碳酸盐结合态铬的浓度均有所增加。同样，砷和锡的碳酸盐基质浓度在较大粒径部分也趋于增加。相比之下，较小粒径部分中可交换态结合镉以及钡的可交换态和碳酸盐基质含量较高。然而，在肯德尔-陶相关性分析中，未发现灰分粒径与TCLP金属浸出性之间存在相关性。
