期刊论文详细信息
Quimica nova | |
Atmospheric deposition of ammonium, nitrate ans sulfate on the montane dense ombrophilous forest in Serra dos Órgãos, RJ | |
Mello, William Zamboni de1  Souza, Patricia Alexandre de1  Rodrigues, Renato de Aragão Ribeiro1  | |
[1] Universidade Federal Fluminense, Niterói, Brasil | |
关键词: rainwater chemistry; wet deposition; dry deposition.; | |
DOI : 10.1590/S0100-40422007000800009 | |
学科分类:化学(综合) | |
来源: Sociedade Brasileira de Quimica | |
【 摘 要 】
Wet and dry (dust) deposition was measured inthe Serra dos Órgãos National Park. VWM pH was 5.3. Non-sea-salt(nss) SO42- comprised 97% of total SO42-.The molar ratio [2(nss-SO42-) + NO3-]/[NH4++ H+] was 1.1, suggesting that pH is predominantly controlled byH2SO4, HNO3, and NH3. Wet depositionof NH4+, NO3-, and nss-SO42-was respectively 0.59, 0.25, and 0.30 kmol ha-1 yr-1.Assuming that dry deposition of N can comprise 30-50% of its total (dry + wet)deposition, the latter is estimated to be 1.2-1.7 kmol ha-1 yr-1(17-24 kg N ha-1 yr-1).
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO201902016700463ZK.pdf | 915KB | download |