Characterizing ionic species in PM2.5 and PM10 in four Pearl River Delta cities, south China.

@article{Lai2007CharacterizingIS,
  title={Characterizing ionic species in PM2.5 and PM10 in four Pearl River Delta cities, south China.},
  author={Sen-chao Lai and Shi-chun Zou and Junji Cao and Shun-cheng Lee and Kin-fai Ho},
  journal={Journal of environmental sciences},
  year={2007},
  volume={19 8},
  pages={939-47}
}
PM2.5 and PM10 samples were collected at four major cities in the Pearl River Delta (PRD), South China, during winter and summer in 2002. Six water-soluble ions, Na+, NH4+, K+, Cl-, NO3- and SO4(2-) were measured using ion chromatography. On average, ionic species accounted for 53.3% and 40.5% for PM2.5 and PM10, respectively in winter and 39.4% and 35.2%, respectively in summer. Secondary ions such as sulfate, nitrate and ammonium accounted for the major part of the total ionic species… CONTINUE READING
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