Heavy Metals In Soil Samples Research Articles

Determination of the activity level of gamma radionuclides -artificial 137Cs and for comparison -natural 40K and the selected heavy metals in the Tatra Mountains ecosystem.

<p>This paper presents the results of determination of artificial <sup>137 </sup>Cs and natural <sup>40</sup>K activity concentrations and same heavy metals in soil samples from Tatra Mts. Results show some differences in the vertical distribution and of examined radionuclides and metals. The change of activity of <sup>137</sup>Cs in the soil samples depends mostly on the soil volume density and on the concentration of organic material. The state of "zero" <sup>137</sup>Cs activity was developed in the form of maps.</p>

Levels of some heavy Metals in Cocoyam (<i>Colocasia esculentum</i>) grown on Soil receiving Effluent from a Paint Industry

The levels of some heavy metals in soil samples and tubers of cocoyam (Colocasia esculentum) grown on soil receiving paint wastes (PWS) has been investigated using Atomic Absorption spectrophotometer (Unicam 939/959 model). Similar analyses were carried out for the same plant from a control area. The studies revealed that although the P.W.S contained abnormally high levels of Pb (474.14mgkg-1) and Cu (137.85mgkg-1). The paint waste tuber (PWT) recorded low levels of these metals: Pb (2.13mgkg-1) and Cu (13.85mgkg-1) respectively. Correlation analysis tested at 0.05 level of significance show that no significant correlation existed between the metals levels in the soil and the level in the tuber. In all cases the levels of the metals in the tubers were well below the upper limit documented for unpolluted plant. The results however suggest the ineffectiveness of the use of Colocasia esculentum as a bioindicator for heavy metal pollution in soil. © JASEM

On-site detection of heavy metals in agriculture land by a disposable sensor based virtual instrument

A field-based detection system was designed and implemented for the simultaneous determination of heavy metals in soil samples. The detection principle is based on electrochemical differential pulse anodic stripping voltammetry (DPASV). In order to fulfill the requirements of field screening usage, a fast soil pretreatment process using ultrasonic-assisted extraction was applied. A disposable and integrated sensor, incorporating a three-electrode configuration (working electrode, reference electrode and counter electrode), was fabricated by the screen-printing technology and further modified with Nafion polymer and bismuth film. Coupled with the portable and flexible analysis instrument which was developed by virtual instrument technology, this system was used for trace determination of cadmium and lead content in soil. For accurate qualitative and quantitative analysis of heavy metals, the detection methodology based on the statistical algorithm and chemometrics method was proposed. The results showed that the system was sensitive, reliable and effective, which might hold great promise for its on-site analysis applications.

Assessment of metals contamination and ecological risk in ait Ammar abandoned iron mine soil, Morocco

Abstract The present study is an attempt to assess the pollution intensity and corresponding ecological risk of phosphorus and metals including Cd, Cr, Cu, Zn, Pb and Fe using various indices like geo-accumulation index, enrichment factor, pollution and ecological risk index. In all, 20 surface soil samples were collected from the Ait Ammar iron mine of Oued Zem city, province of Khouribga, in central Morocco. The concentrations of heavy metals in soil samples were used to assess their potential ecological risks. According to the results of potential ecological risk index (RI), pollution index (PI), geo-accumulation index (Igeo), enrichment factor (EF), potential contamination index (Cp), contaminant factor (Cf) and degree of contamination (Cd), based on the averages, considerable pollution of metals in soils of study area was observed. The consequence of the correlation matrix and principal component analysis (PCA) indicated that Fe, Cu, Zn, Cr and P mainly originated from natural sources and Cd and Pb are mostly derived from anthropogenic sources. The results showed that these metals in soil were ranked by severity of ecological risk as Pb > Cd > Cu > Cr > Zn, based on their single-element indexes. In view of the potential ecological risk (RI), soils from all soil samples showed a potential ecological risk. These results will provide basic information for the improvement of soil environment management and heavy metal pollution prevention in Ait Ammar.

Bioavailability of Cd and Zn in soils treated with biochars derived from tobacco stalk and dead pigs

Previous studies show that application of biochar can reduce the bioavailability of heavy metals in soil. A plant growth experiment was carried out to evaluate the effect of tobacco stalk- and dead pig-derived biochars on the extractability and redistribution of cadmium (Cd) and zinc (Zn) in contaminated soil, and the impact on tobacco (Nicotiana tabacum L.) plant growth. The top 20 cm of a soil contaminated with Cd and Zn was used in this study. Biochars derived from tobacco stalk and dead pig were applied to the soil at four application rates (0, 1, 2.5, and 5 %), and tobacco plants were grown. After 80-days growth, the pH, electrical conductivity (EC), CaCl2-extractable heavy metals and fractions of heavy metals in soil samples, as well as the plant biomass and the concentrations of heavy metals in the plant were determined. The plant growth experiment demonstrated that tobacco stalk biochar and dead pig biochar significantly (P < 0.05) increased the pH, but had no significant effect on the electrical conductivity (EC) of the soil. The CaCl2-extractable Cd and Zn content decreased as the application rates increased. The concentration of extractable Cd and Zn decreased by 64.2 and 94.9 %, respectively, for the tobacco stalk biochar treatment, and 45.8 and 61.8 %, respectively, for the dead pig biochar treatment at 5 % application rate. After biochar addition, the exchangeable Cd was mainly transformed to fractions bound to carbonates and Fe-Mn oxides, while the Zn was immobilized mainly in the fraction bound to Fe-Mn oxides. Tobacco stalk biochar increased the tobacco plant biomass by 30.3 and 36.2 % for shoot and root, respectively at the 5 % application rate. Dead pig biochar increased the tobacco plant biomass by 43.5 and 40.9 % for shoot and root, respectively, at the 2.5 % application rate. Both biochars significantly (P < 0.05) decreased the Cd and Zn accumulation by tobacco plant. As a soil amendment, tobacco stalk biochar was more effective at removing Cd, whereas dead pig biochar was more effective at removing Zn, and a higher application rate was more effective than a lower application rate. Overall, biochar derived from tobacco stalk was more effective, than dead pig biochar, at remediating soil contaminated with Cd and Zn, as well as promoting tobacco growth.

Soil Contamination from Non-sanitary Waste Landfill in Langat Water Catchment Area, Malaysia

Soil is a complex matrix and a major reservoir of contamination. It has the ability to bind many potential toxic elements such as heavy metals and they can exist in various forms. Leachate triggered soil contamination in waste landfill through sorption and migration process. This study determined heavy metals contamination in the soil of non-sanitary landfills in Langat river water catchment area in Selangor. Topsoil samples were collected from four landfill sites and three nonlandfill sites for comparison. Soil type, soil pH, organic matter and exchangeable cations were determined using specified method. Available heavy metals in soil samples were determined using Ethylenediaminetetraacetic acid (EDTA). The distribution of heavy metals across landfill sites were performed using ArcGIS. Statistical Package for the Social Sciences (SPSS) statistical software was used to analyse the finding. The overall findings have indicated that Al (2340±575 mg/kg), Fe (2110±330 mg/kg), Cu (65.1±29.6 mg/kg) and Cd (4.99±1.3 mg/kg) were very high in the agriculture soil. Al and Fe also were high in the residential area soils with the mean ± SD of 2760±128 mg/kg and 1620±710 mg/kg respectively. Other elements such as Mn, Zn and Pb were highly detected in waste landfills. The highest Mn and Zn were detected in landfill site B with the mean ± SD of 76.5±13.9 mg/kg and 17.8±24.0 mg/kg respectively. High concentration of Pb was detected in landfill site D (37.9±37.8 mg/kg) and site B (37.5±24.3 mg/kg) while Cd was high in landfill site A (4.61±0.6 mg/kg) and site D (4.39±1.0 mg/kg). Ni was commonly detected as low in all sites. The highest Ni concentration was determined in landfill site B (1.55±3.06 mg/kg). In conclusion, all heavy metals in the studied soils were within the soil standard except for Cd and Cu. Most of heavy metals were retained at the boundary of the landfills. The mobility of heavy metals in the soil was possibly associated with the acidic-pH soils environment, high organic matter and clay content. In conclusion, the soil contamination occurred in both landfills and non-landfill sites where Cu contamination was found in agriculture soil, residential area and landfill site A while Cd contamination was present in all study sites.

Radiological safety assessment and determination of heavy metals in soil samples from some waste dumpsites in Lagos and Ogun state, south-western, Nigeria

Assessment of naturally occurring radionuclides and heavy metals in 5 major dumpsites around Lagos and Ogun State, Nigeria, was carried-out to determine the natural radionuclide and heavy metals in the dumpsites and to evaluate the hazards these may have on the public. Radionuclide concentrations were determined using gamma-ray spectrometry with NaI (Tl) detector. The mean activity concentrations of 226Ra, 232Th and 40K in the soil samples were 23.1 ± 2.5, 35.1 ± 2.1 and 318.9 ± 27.4 Bq kg−1, respectively in Ojota, 32.1 ± 6.1, 44.2 ± 16.0 and 377.4 ± 9.0 Bq kg−1 in Ojo, 18.2 ± 4.8, 28.4 ± 3.1 and 340.9 ± 12.1 in Igando, 26.3 ± 9.0, 38.1 ± 1.1 and 531.1 ± 23.0 in Agbara and 15.3 ± 3.6, 22.3 ± 1.7 and 840.9 ± 42.0 in Ogijo, respectively. The results of 226Ra and 232Th are lower than the world average but higher for 40K (UNSCEAR, 2000). The analysis of the heavy metal concentrations indicated that there is presence of Cadmium, Zinc and Copper in high proportion. These metals are toxic and may cause severe problem with prolonged exposure. Monitoring the accumulation of these metals in soil samples is very important and the practice of cultivating the land for planting vegetables and legumes by farmers around the dumpsites must be discouraged to prevent the transportation of these toxic metals into human system.

Concentrations of persistent organic pollutants (POPs) and heavy metals in soil from San Luis Potosí, México.

The aim of this study was to assess the levels of polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyls (PCBs), p,p'-dichlorodiphenyltrichloroethane (DDT), p,p'-dichlorodiphenyldichloroethylene (DDE), and four heavy metals (arsenic, cadmium, lead, and mercury) in soil from the city of San Luis Potosí in Mexico. In order to confirm the presence of the previously mentioned compounds, outdoor surface soil samples were collected and analyzed by gas chromatography/mass spectrometer for PBDEs, PCBs, DDT, and DDE. Meanwhile, heavy metals were quantified using the atomic absorption spectrophotometry technique. The total PBDEs levels ranged from 5.0 to 134 μg/kg dry weight (dw), with a total mean PBDEs level of 22.0 ± 32.5 μg/kg dw (geometric mean ± standard deviation). For PCBs, the total mean level in the studied soil was 21.6 ± 24.7 μg/kg dw (range, <LOD to 80.5). An important finding in our study was that all soil samples (100 %) had detectable levels of the metabolite DDE. Moreover, the total mean DDT level (∑ DDT and DDE) was approximately 5.50 ± 4.50 μg/kg dw. The mean levels for arsenic, mercury, cadmium, and lead in soil samples were 7.20 ± 10.7 (range, 15.0 to 265 mg/kg dw), 0.45 ± 0.48 (range, <LOD to 2.50 mg/kg dw), 3.00 ± 3.00 (range, 1.00-13.0 mg/kg dw), and 108 ± 105 (range, 25.0 to 435 mg/kg dw), respectively. This screening study provides us with concentration data for the occurrence of persistent organic pollutants (POPs) and four heavy metals in soil samples from the city of San Luis Potosí, Mexico, and considering that soil is an important pathway of exposure for people, a biomonitoring program for the surveillance of the general population in the city of San Luis Potosi is necessary.

Distribution of chromium, copper, lead and zinc in soil from kimanis, papar, sabah

This paper discusses the distribution of selected heavy metals namely chromium (Cr), copper (Cu), lead (Pb) and zinc (Zn) in soil from Kimanis, Papar, Sabah. Fourteen soil samples were collected from soil originated from sedimentary rock of Crocker Formation and Quaternary deposit. The Crocker Formation consists of thick sandstone unit and inter-bedded sandstone and shale unit with the age of Late Eocene to Early Miocene. The physico-chemical analysis of soil include the pH value, moisture content, organic content and particle size. Soil of Crocker Formation were classified as sandy loam and sandy clay loam, while Quaternary deposit were classified as sand, sandy loam, sandy clay loam and clay with loam. The result of analysis shows the soils were acidic with pH values range from 3.06-5.65. Organic matter content ranges from 0.98%-7.63% and moisture content were 13.8%-60.51%. All heavy metals were analyzed using ICP-OES. The result of analysis indicated that Zn shows the highest value then followed by Cu, Pb and Cr. Soil sample from Crocker Formation show significantly high Zn and Cu content, where SC6 and SC7 have Zn value of 274.36 μg/g and 127.82 μg/g respectively, whereas 127.98 μg/g of Cu. The distribution of heavy metals in soil samples are controlled by the mobility and leaching process during chemical weathering and also adsorption by clay particles and organic matter as well as the human activities within the area.

Heavy Metal Pollution of In-situ and Surrounding Soils Profiles at Municipal Solid Waste Dumpsite

Aims: To investigate the levels, variability and degree of heavy metal pollution in in-situ municipal solid waste dumpsite soil (WDS) compared to adjoining area (CS) at 100 – 120m from dumpsite as a contribution to global knowledge of pattern of pollution and data base at dumpsite. Study Design: Field-scale investigation of nine heavy metals (HM) at source pollution site and surrounding soil. Place and Duration of Study: Uyo municipal solid waste dumpsite in 2010. Methodology: Core sampling of soil at solid waste dumpsite and at 100 – 120m away, taken at 0-10cm and 10-20cm profile depths at 4 spatially different points. Acid digestion of HM in soil samples and determination of elemental HM concentration by flame AAS. HM pollution level was assessed using contamination factor, metal pollution index; ANOVA, and covariance for spatial variability. Results: Mean concentrations of nine heavy metals at municipal waste dumpsite soil were significantly (P < .01) higher than the un-dumped surrounding soil, and gave high mean metal pollution index of 5.21 for the overall soil profile. Toxicity was indicated for Fe, Ni, Pb, and B. Correlation between mean HMs at WDS and CS was very low (R = .488) but difference was significant (P = .05), indicating no lateral transfer to fringe area at Original Research Article British Journal of Applied Science & Technology, 4(8): 1198-1214, 2014 1199 100 – 120m away. Conclusion: Heavy metal pollution in municipal solid waste dumpsite soil was higher at all profile depths than in control soil with contamination factors of 3-22 times the control soil values. Pollution was site-specific / anthropogenic (from waste deposition and leachate) rather than terrigenous. Fringe fields at 100-120m from dumpsite, except downslope, were buffered from dumpsite pollution. More research on deeper profile and minimum pollution free buffer distance are recommended.

Concentrations of 137Cs and 40K radionuclides and some heavy metals in soil samples from the eastern part of the Main Ridge of the Flysch Carpathians

The aim of the study is to present the results of determination of radioactivity of artificial 137Cs and natural 40K and certain heavy metals in soil samples collected from the eastern part of the Main Ridge of Carpathians, including the Beskid Niski Mts and the Bieszczady Mts. The evaluation of level of radionuclides was based on the bulk density analysis of the soil. A valuable finding of the study was a good linear correlation between the level of 137Cs concentration and bulk density of the soil as well as an inverse correlation between radioactivity of natural 40K and tested soil density. This might indicate though a high competitiveness of these elements between each other. Moreover, a good correlation between the concentrations of artificial element 137Cs and Pb has been also observed in soil samples collected from the Beskid Niski Mts. In most cases, the level of artificial 137Cs was lower comparing to an average 137Cs concentration established for soils in Poland.

Comparison of USEPA digestion methods to heavy metals in soil samples

The use of appropriate analytical methods is of paramount importance for risk assessment and monitoring of potentially toxic metals in soils. In this sense, the objective of this study was to compare the effectiveness of two sample digestion methods, recommended by the Brazilian legislation for the management of contaminated areas (CONAMA 2009), aiming at the determination of environmentally available metal concentrations (USEPA 3050B, USEPA 3051A), as well as a total digestion method (USEPA 3052). Samples from 10 classes of soils were analyzed for Cu, Zn, Cd, Pb, Ni, and Hg. The results showed that the USEPA method 3051A is more efficient than the USEPA method 3050B in the extraction of levels considered environmentally available of Zn, Cu, Cd, Pb, and Ni. Besides providing a higher recovery of these elements, the method requires shorter digestion time, lower consumption of acids, and reduced risk of contamination. The USEPA method 3051A showed greater efficiency in Hg extraction in soils with higher clay content. Therefore, it is suitable for situations where a wide range of soils with different mineralogical characteristics are analyzed or in order to decrease the losses due to volatilization of the element in open systems.

Human health risk assessment of heavy metals in soil–vegetable system: A multi-medium analysis

Vegetable fields near villages in China are suffering increasing heavy metal damages from various pollution sources including agriculture, traffic, mining and Chinese typical local private family-sized industry. 268 vegetable samples which included rape, celery, cabbages, carrots, asparagus lettuces, cowpeas, tomatoes and cayenne pepper and their corresponding soils in three economically developed areas of Zhejiang Province, China were collected, and the concentrations of five heavy metals (Pb, Cd, Cr, Hg and As) in all the samples were determined. The health risk assessment methods developed by the United States Environmental Protection Agency (US EPA) were employed to explore the potential health hazards of heavy metals in soils growing vegetables. Results showed that heavy metal contaminations in investigated vegetables and corresponding soils were significant. Pollution levels varied with metals and vegetable types. The highest mean soil concentrations of heavy metals were 70.36mgkg−1 Pb, 47.49mgkg−1 Cr, 13.51mgkg−1 As, 0.73mgkg−1 for Cd and 0.67mgkg−1 Hg, respectively, while the metal concentrations in vegetables and corresponding soils were poorly correlated. The health risk assessment results indicated that diet dominated the exposure pathways, so heavy metals in soil samples might cause potential harm through food-chain transfer. The total non-cancer and cancer risk results indicated that the investigated arable fields near industrial and waste mining sites were unsuitable for growing leaf and root vegetables in view of the risk of elevated intakes of heavy metals adversely affecting food safety for local residents. Chromium and Pb were the primary heavy metals posing non-cancer risks while Cd caused the greatest cancer risk. It was concluded that more effective controls should be focused on Cd and Cr to reduce pollution in this study area.

Assessment of Soil Contamination through E-Waste Recycling Activities in Tema Community One

The study investigated the level of heavy metal concentration in soils at e-waste recycling sites at Tema Community One. Two soil samples were collected from six different sites for laboratory analysis with a seventh location serving as a control. Heavy metals in soil samples were analyzed by digestion method and the use of atomic absorption spectrophotometer. The concentrations of Cadmium, Copper and Mercury were all higher at all the sites than those obtained for the control. The site that recorded higher concentration for copper was about 1200 times higher than the value for the control but statistically, there was significant difference between the concentrations of copper from the six sites (t = 5.168, p = 0.0036). Site 12 and GMG site had concentrations which is 5 times higher than the control and there was significant difference between the concentrations from the six sites and the control (t = 10.39, p = 0.0001) for the cadmium. The mean concentration of mercury from site 12 was found to be 34 times higher than the control value, however, there was no significant difference between the concentrations from the six e-waste recovery sites and the control (t = 2.593, p = 0.05194). E-waste recycling has contributed to the heavy metal contamination of the soil at the recovery sites. Workers safety in relation to these heavy metals is therefore worth researching in the future.

Determination of Heavy Metals in Soil Samples of Selected Sawmills in Ekiti State, Nigeria

The study investigated the impact of sawmill activities in the accumulation of heavy metals in soil around some selected sawmill industries in Ekiti State. Soil samples were collected at 5cm and 20cm depth; at interval of 10m, 20m, 30m, and 40m away from the site. The results obtained showed that the concentration of most of the metals at the different sites were almost similar, depicting that these metals are probably of natural origin with mild contribution from anthropogenic source, since the concentration of the metals decreased with distance from the various site. All metals monitored were detected in the soil samples and the values obtained were within the acceptable International Standards for soil/sediment.

Assessment of Soil Contamination near Samanabad Sewage Drain and its Nutritional Potential for Aesthetic Beauty

Soils are the primary component of urban ecosystems. Pollution of soil caused usually due to xenobiotic materials and alteration in the environment natural soils, which is due to improper waste disposal, agriculture chemicals and industrial activities. The present study is to monitor the soil pollution and the suitability of contaminated soil to be used to enhance floral beauty of land adjacent to Samanabad Sewage Drain, Lahore. Total 6 km of land was divided into 8 sites, 4 on each side of the drain. A total of 32 samples were collected from four different depths: 0-15 cm, 15-30 cm, 30-60 cm and 60-90 cm. Soil quality parameters: Saturation percentage, electrical conductivity, moisture content, organic content, potassium, phosphorus and heavy metals in soil samples were analyzed and compared with different available standards statistically. Results showed that the soil electrical conductivity, potassium, phosphorus, organic contents and heavy metals were relatively higher than standards. Due to high nutritional value, soil can be used as compost or fertilizer to enhance floral beauty through selective planting of salts and metal tolerant ornamental plants.

Solar thermal vitrification of mining contaminated soils

Vitrification of hazardous mine wastes and mine tailings from old mercury and Ag–Pb mines in SE Spain, was studied using solar technology. Six samples were treated in a solar furnace, reaching temperatures of 1050 to 1350°C. DRX and SEM-EDS microanalysis of the thermally treated samples showed the presence of a dominant vitreous phase with blebs resulting from gas escape, with metals (especially Zn, Cu, Ni) in solid solution. EDX analysis of samples showed the presence of Fe, Ti as well as Si, Al, Ca and Mg, which may be associated to neoformed silicates and/or to glassy phases.Metal leachability of the thermally treated samples demonstrates the immobilization of Fe, Mn, Ni, Cu and Zn in the samples treated at the highest temperatures (1350°C), whereas Mn, Ni, Cu and Zn were mobilized in samples treated at lower temperatures (1050°C). Therefore, temperature is the key factor in the immobilization of heavy metals in soil samples when using a solar heating source, showing a low metal-mobility of the samples treated at elevated temperatures.

Heavy metal and radionuclide levels in soil around Afsin-Elbistan coal-fired thermal power plants, Turkey

This study aimed to determine the incidence of naturally occurring radionuclides 232Th, 238U and 40K, artificial radionuclide 137Cs, and heavy metals in soil samples collected from the surroundings of Afsin-Elbistan coal-fired thermal power plant in Kahramanmaras Province, Turkey. Physical and chemical properties of the soil samples were also determined. Radiation levels were measured using a gamma multichannel analyzer equipped with an HPGe detector (Canberra 2020). Concentrations of the studied elements were determined using ICP-AES. The average specific activity of 137Cs, 40K, 232Th and 238U at standard deviations was found to be 51.4 ± 84.9, 409 ± 180, 39.8 ± 18.8 and 34.4 ± 22.0 Bq kg−1. Radium equivalent activity (Raeq) was calculated to be 122.8 Bq kg−1, lower than the limits recommended by the OECD. Mean concentrations of heavy metals were 6.29 ± 0.77, 70.5 ± 20.3, 59.5 ± 75.2, 89.8 ± 58.9, 26.7 ± 23.7, 89.2 ± 58.4, 18,806 ± 4,273 and 14,634 ± 1,166 mg.kg−1 for Cd, Cr, Cu, Ni, Pb, Zn, Al and Fe, respectively. The Cd content in all samples and maximum values of Cu, Cr and Ni were higher than the limits specified for soil in Turkey.

Fractionation and risk assessment of heavy metals in soil samples collected along Zerqa River, Jordan

The objectives of the current study were to determine the chemical partitioning of Pb, Ni, Zn, Co, Cr, Mn, Fe and Cd using sequential extraction procedure and to assess the environmental risk associated with these metals in the farming soils along Zerqa River. Metal concentrations were measured by atomic absorption spectrophotometer. The study area demonstrated a wide range for pH, organic matter, carbonate contents, and cation exchange capacity, and is polluted with Pb, Cd, Mn, and Cu. The extensive use of fertilizers and pesticides in the agricultural activities, and discharge of treated and untreated wastewater are the major sources of pollution in the study area. Principal component analysis coupled with Pearson’s correlation analysis between the heavy metals revealed strong and positive correlation between these metals in the study area. According to the Risk Assessment Code (RAC), major portions of Cd and Mn are contained in exchangeable and carbonates fractions and therefore can easily enter the food chain. These metals pose a high to very high risk to the environment. Cu, Ni, Pb, and Zn pose medium risk, while Cr poses a low environment risk.

EVALUATING THE EFFECT OF DIFFERENT TYPES OF IRRIGATION WATER ON LEVEL OF HEAVY METALS IN SOIL IN AL- HASSA OASIS, SAUDI ARABIA

The present study is conducted to investigate the effect of irrigation water quality on heavy metals content in soil of Al- Hassa Oasis. The investigated irrigation water included groundwater (GW), mixture of groundwater and drainage water (GW+DW), mixture of groundwater and tertiary treated wastewater (GW+TTWW) and mixture of groundwater, drainage water and tertiary treated wastewater (GW+DW+TTWW). The results of this study indicate that the water types used in the present study may cause one problem or another according to the water type. By applying the criteria used for interpreting water quality for irrigation, the most domain problems are salinity hazard, potential salinity and soluble sodium percentage. Therefore, it is expected that continuous irrigation without good water management (leaching requirements) can led to severe problems from the salinity point of view. (GW+DW +TTWW) have the highest effect on elemental composition of soil followed by (GW+TTWW), (GW+DW) and then (GW). Generally, a significant difference in the heavy metals concentrations for both treated soil was found. The contents of the heavy metals in soil samples are compared with the worldwide standards. Based on these comparisons some recommendations are raised.