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Duyzer, J.H. (author), Bouman, A.H.M. (author), van Aalst, R.M. (author), Diederen, H.S.M.A. (author), Hoofdgroep maatschappelijke technologie TNO (author)The dry deposition velocity of NH_3 and NH^+_4 ions in particles was determined using the micrometeorological gradient method. The vertical concentration gradient of NH_3, necessary to calculate the flux, was measured using oxalic acid coated denuders. NH^+_4 ions were determined in the airstream leaving the denuders using impregnated filters....conference paper 1987
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