The creation of pollution mapping and measurement of ambient concentration of sulfur dioxide and nitrogen dioxide with passive sampler.

Andaç Akdemir

doi:10.1186/s40201-014-0111-9

Abstract

BackgroundMeasurements of nitrogen and sulfur dioxide using passive sampler over 12 months in Samsun, Turkey, are compared with SO2 and NO2 concentrations obtained from a co-located chemiluminescence analyzer. The concentrations of Sulfur and nitrogen dioxide in the ambient air during the period from November 2009 to September 2010 are analyzed.ResultsThe highest value for annual NO2 and SO2 averages of passive sampler was 29.65 μg/m3 and 21.01 μg/m3 for exposures of 2-weeks at an industrial site. The maximum monthly concentration for SO2 was observed at the 10th measurement station with 44.19 μg/m3 for August. The maximum monthly concentration for NO2 was observed on the 3rd measurement station with 42.83 μg/m3 for November. A negative correlation between nitrogen dioxide concentrations and temperature (R2 = −0.5489) was estimated. A positive correlation between nitrogen dioxide measurement with passive sampler and continuous measurement (R2 = 0.6571) was estimated.

Highlights

Measurements of nitrogen and sulfur dioxide using passive sampler over 12 months in Samsun, Turkey, are compared with SO2 and NO2 concentrations obtained from a co-located chemiluminescence analyzer
The contaminant concentration kept in the passive sampler depends of the period of atmosphere exposure, quantity of total gas transfer collected in the passive sampler tube, geometric structure of the tube and diffusion coefficient, ambient temperature, ambient humidity, sorbent strength and face velocity
The measurement readings obtained for nitrogen dioxide and sulfur dioxide from all measurement stations are given separately on Figures 2 and 3, and seasonal variation of sulfur dioxide and nitrogen dioxide for all stations on Figures 4 and 5

Summary

Introduction

Measurements of nitrogen and sulfur dioxide using passive sampler over 12 months in Samsun, Turkey, are compared with SO2 and NO2 concentrations obtained from a co-located chemiluminescence analyzer. The concentrations of Sulfur and nitrogen dioxide in the ambient air during the period from November 2009 to September 2010 are analyzed. The contaminant concentration kept in the passive sampler depends of the period of atmosphere exposure, quantity of total gas transfer collected in the passive sampler tube, geometric structure of the tube and diffusion coefficient, ambient temperature, ambient humidity, sorbent strength and face velocity. Passive sampler is a preferred method since it does not require power supply, has cost-efficient investment, light, simple analysis procedure as well as not requiring calibration, and suitable for simultaneous multipoint measurement of ambient air pollution. Passive samplers are extremely useful to assess long-term concentration trends (e.g., yearly) and are small, light, re-usable, and Pollutants

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Conclusion