第 43 卷第 2 期Vol. 43 No. 2
2013 年 4 月Apr 2013

所属栏目:分析与测试

微波消解-火焰原子吸收法测定制革污泥中总铬
夏竟妍1,贾劲松1*,赵根成1,欧阳彬1,陈献军2 (1. 长沙环境保护职业技术学院,湖南 长沙 410004;2. 天铁集团崇利制钢有限公司,河北 涉县 056400)
摘 要:采用硝酸-盐酸-氢氟酸三元混合酸体系对制革污泥进行微波消解前处理,将各种形态的铬转化为水溶态铬,然后通过火焰原子吸收分光光度法测定污泥样品中总铬的含量。结果表明:样品加标回收率为86%~102%,相对标准偏差为14.3%,准确度和精密度较为理想。本方法适用于制革污泥以及其它含铬污泥的分析测定,为污泥处理和资源化利用提供依据。
关键词:微波消解;火焰原子吸收分光光度法;制革污泥;总铬
中图分类号:O657.31  文献标识码:A  文章编号:1009-9212(2013)02-0066-03
Determination of Total Chromium in Tannery Sludge by Microwave Digestion-Flame Atomic Absorption Spectrometry Method
XIA Jing-yan1,JIA Jin-song1*,ZHAO Gen-cheng1,OU Yang-bin1,CHEN Xian-jun2 (1. Changsha Environmental Protection Vocational College,Changsha 410004,China;2. Chongli Steel Co Ltd of Tiantie Group,Shexian 056400,China)
Abstract:Tannery sludge was pre-treated by microwave digestion with a mixed acid system containing nitric acid,hydrochloric acid and hydrofluoric acid. The various forms of chromium in the sludge were converted to water soluble chromium,which were then analyzed by flame atomic absorption spectrophotometric method. The results showed that the recovery rate of the chromium was in the range of 81%~102%,and the relative standard deviation was 3.36%. The method is applicable to the determination of tannery sludge and other chromium containing sludge.
Key words:microwave digestion;flame atomic absorption spectrophotometric method;tannery sludge;total chromium
作者简介:夏竟妍(1979-),女,湖南沅江人,硕士研究生,主要从事分析测试技术方面的教学科研工作。
联 系 人:贾劲松,副教授,主要从事环境监测技术方面的教学、科研及对外技术服务工作。(E-mail:jjpine2008@163.com)
收稿日期:2013-04-02