Chemical investigation and quality of urban dew collections with dust precipitates

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Odeh , I , Arar , S , Al-Hunaiti , A , Sa'aydeh , H , Hammad , G , Duplissy , J , Vuollekoski , H , Korpela , A , Petäjä , T , Kulmala , M & Hussein , T 2017 , ' Chemical investigation and quality of urban dew collections with dust precipitates ' , Environmental Science and Pollution Research , vol. 24 , no. 13 , pp. 12312-12318 .

Title: Chemical investigation and quality of urban dew collections with dust precipitates
Author: Odeh, Issam; Arar, Sharif; Al-Hunaiti, Afnan; Sa'aydeh, Hiyam; Hammad, Ghada; Duplissy, Jonathan; Vuollekoski, Henri; Korpela, Antti; Petäjä, Tuukka; Kulmala, Markku; Hussein, Tareq
Contributor organization: Helsinki Institute of Physics
Department of Physics
Polar and arctic atmospheric research (PANDA)
Date: 2017-05
Language: eng
Number of pages: 7
Belongs to series: Environmental Science and Pollution Research
ISSN: 0944-1344
Abstract: The quality and chemical composition of urban dew collections with dust precipitates without pre-cleaning of the collecting surface WSF (white standard foil) were investigated for 16 out of 20 collected samples with collected volumes ranging from 22 to 230 ml. The collection period was from March to July 2015 at an urban area, Jubaiha, which is located in the northern part of the capital city Amman, Jordan. The obtained results indicated the predominance of Ca2+ and SO42- ions (ratio 2.2: 1) that originated from Saharan soil dust; where the collected samples were alkaline (mean pH = 7.35) with high mineralization (429.22 mg/L) exceeding the previously reported dew values in Amman-Jordan. A relocation of NaCl and to a less extent Mg2+ from sea to land by Saharan wind is indicated by the percent sea-salt fraction calculations (over 100 and 52, respectively). The collected samples exhibited high total organic carbon (TOC) values ranging from 11.86 to 74.60 mg/L, presence of particulate settled material with turbidity ranging from 20.10 to 520.00 NTU, and presence of undesired elements like boron (mean = 1.48 mg/L) that made it different in properties from other dew water collections at clean surfaces, and exceeding the standard limits for drinking water for these parameters set by Jordanian Drinking Water standards (JS286/2015)/WHO standard. The quality of this water is more close to that for raw or agricultural water but if it is meant to be used as potable source of water, at least sand and activated charcoal filters are needed to purify it.
Subject: Dew
Dust precipitate
Water quality
116 Chemical sciences
1172 Environmental sciences
114 Physical sciences
Peer reviewed: Yes
Rights: unspecified
Usage restriction: openAccess
Self-archived version: acceptedVersion

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