Determination of trace metal concentrations in contaminated soil of Karak solid waste disposal site, Jordan

العناوين الأخرى

تحديد تراكيز بعض العناصر الثقيلة و توزيعها على سطوح التربة في مكب النفايات الصلبة الجديد في محافظة الكرك

مقدم أطروحة جامعية

al-Tarawinah, Muhammad Naji

مشرف أطروحة جامعية

Batarisah, Mufid Isa

الجامعة

جامعة مؤتة

الكلية

كلية العلوم

القسم الأكاديمي

قسم الكيمياء

دولة الجامعة

الأردن

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2012

الملخص الإنجليزي

The present study was aimed to determine the concentration of trace metals and their distribution pattern in top soil of new Karak Solid Waste Disposal site.

Additionally, the work was planned to optimize a microwave digestion method using acid mixture and validate the analytical method using certified reference material for determination of trace metal concentrations using atomic absorption spectrometry (AAS).

Seventy five soil samples were collected during autumn 2011 from the investigated solid waste disposal site located 25 km north-east of Karak City.

The soil samples were analyzed for bulk physio-chemical parameters such as pH, Total Organic Carbon (TOC%), Electrical Conductivity (EC), Calcium Carbonate percentage (CaCO3%) and soil texture.

The concentration of trace metals (Zn, Ni, Pb, Cu, Co, Cr, Fe and Mn) were analyzed in collected soil samples in total and available forms in order to identify the distribution pattern in the investigated area and to evaluate their mobility and uptake.

The pH values of investigated samples were ranged from 7.86 to 8.97 with an average of 8.26, TOC% between 0.91 to 3.26% with an average of 2.19%, EC between 1.3 to 24.6 mS/cm with average of 9.94 mS/cm and the soil texture was characterized as sandy loam to loamy sand.

The total concentration of the elements Zn, Ni, Pb, Cu, Co, Cr, Fe and Mn were ranged between 45.51- 589.65, 17.42 - 327.76, 55.88 - 369.35, 31.83-213.85, 86.87-180.90, 52.94- 533.74, 267.02-831.85 and 91.26-241.40 mg/kg, respectively.

Furthermore, the ratio of available heavy metals to total concentration were as follows Zn: 4.28%, Ni: 1.43%, Pb: 1.87%, Cu: 0.96%, Co: 0.63%, Cr: 0.71%, Fe: 0.39% and Mn: 6.70%.

The Enrichment factor calculations showed that Pb and Co were highly enriched compared to other elements and the order of enrichment factor was found as follows; Pb >> Co > Ni > Cr > Cu > Zn > Mn.

The relative availability ratio of studied metals showed a high Mn availability and consequently the metals mobility in the surface soils followed the order of Mn>Zn>Pb> Ni> Cr> Cu> Co> Fe.

While, Fe was found strongly retained in the soil.

التخصصات الرئيسية

الكيمياء

عدد الصفحات

50

قائمة المحتويات

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-793340