Low cost passive monitoring of sulphur dioxide in ambient air: An effort from developing world

Authors

  • Rejina Maskey-Byanju Central Department of Environmental Science, Tribhuvan University, Kathmandu, Nepal
  • M. B. Gewali Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal
  • K. Manandhar Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal

DOI:

https://doi.org/10.3126/njes.v1i1.36544

Keywords:

Diffusive sampling, passive sampler, sulphur dioxide

Abstract

Standard sulphur dioxide (SO2) monitoring techniques require expensive instrumentation which is not easily adapted for large scale monitoring by resource limited countries. This paper presents the use of locally available relatively cheaper polyethylene tubes to be developed as passive diffusive sampler and use for monitoring of ambient sulphur dioxide using Tri-ethanolamine (TEA) as absorbent. After extraction with double distilled water, modified West-Gaeke method was used for analysis of sulphate adduct formed due to reaction of SOwith TEA using spectrophotometer. The results are successfully compared with other standard methods. The detection limits and precision of the method as expressed as coefficient of variation are good for monitoring of SOin ambient air.

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Published

2013-12-09

How to Cite

Maskey-Byanju, R., Gewali, M. B., & Manandhar, K. (2013). Low cost passive monitoring of sulphur dioxide in ambient air: An effort from developing world. Nepal Journal of Environmental Science, 1(1), 21–26. https://doi.org/10.3126/njes.v1i1.36544

Issue

Section

Research Articles