摘要
采用容器敞口酸消解、高压釜密闭酸消解及微波辅助酸消解３种溶样技术，对电镀污泥、尾矿渣、铬渣、砷钙渣、铅锌渣以及粉煤灰等固体废物试样的全溶解效果进行了对比试验，结果表明：敞口酸消解方法难以达到全溶解，繁琐耗时，易产生二次污染；高压釜密闭酸消解法溶解效果较好，但耗时和不安全；微波辅助酸消解法溶解效果最好，还具有快速方便，较少二次污染等特点。
Comparative studies on sample dissolution methods of six kinds of solid wastes such aselectroplating sludge, tailings,chromium,arsenic-calcium and lead-zinc slags and powder coal ash-es were carried out.The three methods were 1)conventional open vessel digestion using a hot plate,2)high-pressure sealed vessel digestion and 3) microwave-assisted acid digestion technique, respec-tively. It is shown that method 1 )was not only tedious and time-consuming,but also difficult whenused to completely decompose some solid wastes.Compared to method 1),method 2)exhibited betterdissolution ability,but suffered from time-consuming and incomplete dissolution,too. Microwave-assisted acid digestion was best among the three methods and was characterized with convenient,rapid,effective,unnecessary close attention,less pollution and high recoveries for sample preparationof all solid wastes.
出处
《环境科学研究》
EI
CAS
CSCD
1995年第6期17-19,共3页
Research of Environmental Sciences
基金
国家"八五"环保科技攻关项目
关键词
固体废物
环境监测
Solid wastes
Sample preparation methods
Acid digestion
Microwave acid dissolution technique
