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Determination of trihalomethanes and the ionic composition of groundwater at Amman City, Jordan

Content Provider	Springer Nature Link
Author	Salameh, E. Alawi, M. Batarseh, M. Jiries, A.
Copyright Year	2002
Abstract	A water-chemistry evaluation was made of the available springs and wells in Amman and vicinity. Trihalomethanes (THM) were found in all analysed samples with concentrations ranging from 0.2–31.88 µg/L. The probable sources of trihalomethanes in the aquifers originate from three sources: (1) chlorinated Deir Alla surface water, (2) reaction of excess chlorine in the leaky, corroded water-distribution network with organic matter in the vadose zone, and (3) sewage seepage from cesspools in the area. Total organic carbon (TOC) ranged from 0.2–1.4 mg/L. Its probable source is either from the vadose zone or the treated surface water at Deir Alla. It was found that TOC was of vital importance in the formation of THM in the presence of chlorine from the water-distribution system.Major ionic composition of the analysed samples reflected the limestone lithology of the aquifer in the investigated area. Heavy-metal content was relatively low due to the high pH of the groundwater samples. Une étude de la chimie des eaux a été réalisée dans les sources et les puits accessibles d'Amman et de sa périphérie. Des trihalométhanes (THM) ont été trouvés dans tous les échantillons analysés, avec des concentrations comprises entre 0,2 et 31,88 mg/L. Les sources probables de trihalométhanes dans les aquifères ont trois origines: (1) l'eau de surface chlorée de Deir Alla, (2) des réactions du chlore en excès dans le réseau de distribution d'eau corrodé et qui fuit, avec la matière organique de la zone non saturée, (3) l'infiltration d'eaux usées dans des puits perdus dans la région. Le carbone organique total (COT) est compris entre 0,2 et 1,4 mg/L. Sa source probable est soit la zone non saturée, soit l'eau de surface traitée à Deir Alla. On a trouvé que le COT joue un rôle fondamental dans la formation des THM en présence de chlore du système de distribution d'eau.La composition en ions majeurs des échantillons analysés reflète la lithologie calcaire de l'aquifère de la région étudiée. Les concentrations en métaux lourds sont relativement faibles, en relation avec le pH élevé des eaux souterraines. Se ha realizado una evaluación química del agua procedente de manantiales y pozos en el entorno de Amman (Jordania). Se ha encontrado trihalometanos (THM) en todas las muestras, con concentraciones que varían entre 0,2 y 31,88 mg/L. Hay tres orígenes probables de los trihalometanos en aguas subterráneas: (1) aguas superficiales cloradas de Deir Alla; (2) la reacción del cloro residual de la red de distribución, que sufre corrosión y pérdidas, con materia orgánica en la zona vadosa; y (3) la infiltración de aguas residuales desde los pozos ciegos existentes en la zona. El carbono orgánico total (COT) está entre 0,2 y 1,4 mg/L. Su origen probable se halla o bien en la zona vadosa o bien en las aguas superficiales tratadas de Deir Alla. Se ha visto que el COT desempeña un papel vital en la formación de THM en presencia de cloro procedente del sistema de distribución de agua potable.La composición en iones principales de las muestras analizadas refleja la litología carbonatada del acuífero en la zona de estudio. El contenido en metales pesados es relativamente bajo, debido al elevado pH de las muestras de aguas subterráneas.
Starting Page	332
Ending Page	339
Page Count	8
File Format	PDF
ISSN	14312174
Journal	Hydrogeology Journal
Volume Number	10
Issue Number	2
e-ISSN	14350157
Language	English
Publisher	Springer-Verlag
Publisher Date	2002-03-13
Publisher Institution	International Association of Hydrogeologists
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Water Science and Technology

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