Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015

Atomic absorption spectroscopy for the determination of heavy metals in polyethylene moulding materials using Anderson–Darling statistics and top-down uncertainty estimates

Authors
Dekui Bai, Quanhong Ying, Ni Wang, Jinhui Lin
Corresponding Author
Dekui Bai
Available Online July 2015.
DOI
https://doi.org/10.2991/icaees-15.2015.78How to use a DOI?
Keywords
Anderson–Darling technique; atomic absorption spectroscopy; bias; bottom-up uncertainty estimate; in-house reference; top-down uncertainty estimate
Abstract

Quality control data of heavy metal content (in terms of Pb) detected by atomic absorption spectroscopy in moulded polyethylene packaging material were analysed. A hypothesis of normal distribution was accepted at the 95% confidence level. Established individual and moving range charts indicated that 99.7% of all normally distributed data fell within expected limits, assuming that the variability of the measurement system was due to random error. The atomic absorption spectroscopy system under investigation could not be considered suspect as neither the Anderson–Darling test nor the other analysis failed. Further, to monitor trends in the average, an exponentially weighted moving average line was overlaid on the ‘individual’ chart to enhance its sensitivity in detecting deviations. Based on long-term experimental data and statistical analysis, the atomic absorption spectroscopy system was assumed to be reliable with negligible bias, and a Pb content of 0.014 mgL 1 proposed for in-house reference.

Copyright
© 2015, 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/).

Download article (PDF)

Volume Title
Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015
Series
Advances in Engineering Research
Publication Date
July 2015
ISBN
978-94-6252-130-8
ISSN
2352-5401
DOI
https://doi.org/10.2991/icaees-15.2015.78How to use a DOI?
Copyright
© 2015, 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/).

Cite this article

TY  - CONF
AU  - Dekui Bai
AU  - Quanhong Ying
AU  - Ni Wang
AU  - Jinhui Lin
PY  - 2015/07
DA  - 2015/07
TI  - Atomic absorption spectroscopy for the determination of heavy metals in polyethylene moulding materials using Anderson–Darling statistics and top-down uncertainty estimates
BT  - Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015
PB  - Atlantis Press
SP  - 418
EP  - 424
SN  - 2352-5401
UR  - https://doi.org/10.2991/icaees-15.2015.78
DO  - https://doi.org/10.2991/icaees-15.2015.78
ID  - Bai2015/07
ER  -