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Clean Sampling and Analysis of River and Estuarine Waters for Trace Metal Studies
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Clean Sampling and Analysis of River and Estuarine Waters for Trace Metal Studies

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Microscopic evaluation of trace metals in cloud droplets in an acid precipitation region

Weijun Li1, Yan Wang, Jeffrey L Collett

  • 1Environment Research Institute, Shandong University, Jinan, Shandong 250100, China. liweijun@sdu.edu.cn

Environmental Science & Technology
|April 17, 2013
PubMed

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The experimental conditions in a gravimetric analysis should be optimized to maximize the particle size and purity of the obtained precipitate. Ideally, the concentration of the precipitating reagent should be low with effective stirring to maintain low relative supersaturation for the growth of large crystals. In homogeneous precipitation, the precipitant is slowly generated by a chemical reaction in the solution to avoid local reagent excesses. For example, urea decomposes gradually to...
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