Stability of Ionic Components in Precipitation Samples — A Case Study in Taipei

Chen, Lu-Yen; Jeng, Fu‐Tien; Hsu, Yu-Mey; Tsai, Shih-Yuan; Peng, Uei-Ruey

doi:10.1007/978-94-007-0810-5_115

Cited by 1 publication

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“…Median concentrations of SO4", NO3 and cr in the PSR were 6.15, 3.85 and 2.01 mg/L, respectively, while median concentrations of SO4 , NO3 and CI" in the FSR were 10.02, 3.97 and 13.09 mg/L, respectively. The dominant ionic species in the acid precipitation in Taipei were Na+ and Cr, at 86.60 ± 210.4 and 106.20 ± 237.8 |ieq/L, respectively (Chen et al 2001). What we found in harvested rainwater confirmed this observation, and concentrations were approximately in the same range.…”

Section: Anion Contentsmentioning

confidence: 98%

Assessment of rainwater harvesting systems at a university in Taipei

Chiang

Kao

Liu

2013

Water Science and Technology

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Rainwater harvesting systems (RWHSs), a pilot-scale one (PSR) and a full-scale one (FSR), at a university campus in Taipei were assessed. Characteristics of harvested rainwater were analyzed, including pH, electrical conductivity (EC), turbidity, alkalinity, dissolved organic carbon (DOC), total coliform (TC), concentration of 14 metals (Al, Ca, K, Mg, Na, Cu, Fe, Mn, V, Zn, Cd, Cr, Pb and Ni) and concentration of 3 anions (Cl(-), SO(4)(2-) and NO(3)(-)). Rainwater in the FSR had pH in the neutral range and high alkalinity, whereas those of the PSR were acidic and with low buffer ability because of different catchment materials. Median concentrations of 14 metals from two RWHSs were low, except for Na, Ca, K and Mg. Anions, including Cl(-), NO(3)(-), and SO(4)(2-) showed much higher concentration in winter, indicating the influences of marine source and northeast monsoon. Effects of 14-day storage were examined and it was found that pH did not change, while EC, turbidity and DOC slightly decreased. Concentrations of anions and metals were stable, and TC counts of harvested rainwater increased in the beginning, and then declined with storage time. During antecedent dry days, total suspended particulates (TSPs) were collected and their dissolution was examined. Preliminary correlation of wet and dry depositions with rainwater quality was explored.

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Section: Anion Contentsmentioning

confidence: 98%