Comparison Of Different Microwave Digestion Methods For Heavy Metals From Stream Sediment

DOI

10.2991/aeecs-16.2016.32How to use a DOI?

Keywords

Stream sediment, heavy mental, microwave digestion, GFAAS.

Abstract

Appropriate digestion of environmental sample, including soil, sediment and dust, plays a key step in their total heavy metal detection. In order to explore the optimized digestion method, 8 kinds of commonly used hybrid acids groups were selected to simultaneously detect total concentrations of Pb and Cd in stream sediment using microwave digestion instrument. The result showed that method 6HNO3+2HCl+2HF, 8HNO3+4HCl+4HF, 5HNO3+2HClO4+8HF had better digestion effects than others through the comparison of digestion solutions. Furthermore, the detection result based on 6HNO3+2HCl+2HF was basically in the range of standard reference value GBW07310. The average concentrations of Pb and Cd were 23.44 mg/kg and 1.045 mg/kg, while the effectiveness of detection results using the other two methods were quite difference with reference value. Therefore, hybrid acids group 6HNO3+2HCl+2HF was identified as the best digestion method in this study.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhenzhen Qiu
AU  - Jingdong Zhang
AU  - Chaoyang Liu
AU  - Fei Li
AU  - Zixian Wu
PY  - 2016/05
DA  - 2016/05
TI  - Comparison Of Different Microwave Digestion Methods For Heavy Metals From Stream Sediment
BT  - Proceedings of the 2016 International Conference on Advances in Energy, Environment and Chemical Science
PB  - Atlantis Press
SP  - 149
EP  - 152
SN  - 2352-5401
UR  - https://doi.org/10.2991/aeecs-16.2016.32
DO  - 10.2991/aeecs-16.2016.32
ID  - Qiu2016/05
ER  -