scholarly journals Determination of internal and external hazard index of natural radioactivity in well water samples

2020 ◽  
Vol 1436 ◽  
pp. 012090
Author(s):  
D.S Purnama ◽  
T Damayanti
Keyword(s):  
Natural Radioactivity ◽  
Water Samples ◽  
Hazard Index ◽  
Well Water ◽  
External Hazard Index

scholarly journals Iron in Well Water: Case Study in Dulalowo and Heledulaa Districts

2020 ◽  
Vol 2 (2) ◽  
pp. 46-52
Author(s):  
Hendri Iyabu ◽  
Anita Muhammad ◽  
Jafar La Kilo ◽  
Akram La Kilo
Keyword(s):  
Water Samples ◽  
Iron Concentration ◽  
Well Water ◽  
Iron Level ◽  
Water Determination ◽  
Drinking Water Standard ◽  
Water Wells ◽  
Fe Content

This study aims to determine the iron content of water wells in Dulalowo and Heledulaa, Gorontalo City. Ten well water samples were taken randomly from five different wells in each district. Water samples at each well consist of top, middle, and bottom water. Determination of iron level using Atomic Absorption Spectrophotometer (AAS) at a wavelength of 248.33 nm. The results showed that the iron concentration of well water in Dulalowo was 0.030 (D1), 0.265 (D2), 0.224 (D3), 0.158 (D4), 0.149 ppm (D5). Meanwhile, iron levels in Heledulaa were 0.100 (H1), 0.039 (H2), 0.159 (H3), 0.198 (H4), and 0.235 ppm (H5). These results prove that the Fe content in the well water in the two districts is still fulfil the drinking water standard which is a maximum of 0.3 mg/L iron.

scholarly journals Natural Radioactivity Levels in Soil Samples of AL- Sadr and AL-Forat AL-Aosat Hospitals in Najaf

2018 ◽  
Vol 1 (1) ◽  
Keyword(s):  
Natural Radioactivity ◽  
Specific Activity ◽  
Hazard Index ◽  
Absorbed Dose ◽  
Soil Samples ◽  
Absorbed Dose Rate ◽  
Average Value ◽  
Radiation Risks ◽  
External Hazard Index ◽  
Radium Equivalent

This work was undertaken with the purpose of measuring natural radioactivity, due to 238U, 232Th and 40K in 30 soil samples collected from two hospitals in the governorate of (AL-Najaf), in Iraq. The samples were distributed (15) samples per hospital, and Radiation risks were also calculated for all soil samples. The natural radioactivity was measured using NaI (Tl) detector, the results of the specific activity at the Al Sadr Hospital were 238U ranged from (5.89±0.36 to 21.38±0.69) (Bq/kg) with average value 12.60±0.51 (Bq/kg). 232Th from (0.44±0.06 to 14.67±0.37) (Bq/kg) with average value (4.46±0.19) (Bq/kg), and 40K from (252.14±2.54 to 478.24±3.50) (Bq/kg) with average value (346.95±289) (Bq/kg). AL-Forat AL-Aosat hospital results were 238U ranged from (0.69±0.12 to 27.63±0.74) (Bq/kg) with average value (12.84±0.51) (Bq/kg), 232Th from (1.47±0.11 to 9.3±0.31 (Bq/kg) with average value 6.19±0.24 (Bq/kg), and 40K from (192.88±2.27 to 338.52±3.08) (Bq/kg) with average value (254.29±2.54) (Bq/kg). The radiation risks calculated, Radium Equivalent (Raeq), external Hazard index (Hex), absorbed dose rate (ADr), total Annual Effective Dose Equivalent (AEDE), and the Excess Life Cancer Risk (ELCR). The results were for Al Sadr Hospital (45.7063(Bq/kg), 0.1234, 23.0648(nGy/h), 0.0283(mSV/y), 1.247439702×10-3) respectively. For AL-Forat AL-Aosat hospital were (41.2655 (Bq/kg), 0.111, 20.3772 (nGy/h), 0.0250(mSV/y)`, 1.102083688×10-3) respectively. The results in the two hospitals were compared with the global allowable values ratio within the permissible ranges specified by UNSCER, OCDE, and ICRP; we concluded that all the sites in this study are safe.

scholarly journals Analysis of Chloride Levels in Well and PDAM Water in Ngelom Village, Sidoarjo

2019 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Khoirul Ngibad ◽  
Dheasy Herawati
Keyword(s):  
Drinking Water ◽  
Water Samples ◽  
Chloride Ions ◽  
Well Water ◽  
Inorganic Anion ◽  
Titration Method ◽  
Red Color ◽  
Standard Solution ◽  
Maximum Threshold

<p>Chloride is an anion that dissolves easily in water samples and it is the main inorganic anion founded in water samples. Excess of chloride ions in drinking water can damage the kidneys. The aims of this study is to determine chloride levels in well and PDAM water samples in Ngelom Village. Determination of chloride levels in water samples using the Mohr argentometric titration method. The samples used was well water and PDAM water, each was taken from 20 locations in Ngelom Village. The samples were mixed with K<sub>2</sub>CrO<sub>4</sub> indicator and then were titrated using the silver nitrate standard solution until the end point of the titration was marked with a brick red color. The results of the analysis of chloride levels in well water of 92 to 491 mg/L and in PDAM of 57 to 230 mg/L. Based on these results, it can be concluded that chloride levels in both well water and PDAM water samples were below maximum threshold which appointed in Permenkes RI No. 416/Menkes/Per/IX/1990 (≤600 mg/L).</p>

scholarly journals Environmental radioactivity in southern Serbia at locations where depleted uranium was used

2014 ◽  
Vol 65 (2) ◽  
pp. 189-197 ◽  
Author(s):  
Nataša B. Sarap ◽  
Marija M. Janković ◽  
Dragana J. Todorović ◽  
Jelena D. Nikolić ◽  
Milojko S. Kovačević
Keyword(s):  
Natural Radionuclides ◽  
Hazard Index ◽  
Depleted Uranium ◽  
Radium Equivalent Activity ◽  
Gross Alpha ◽  
External Hazard Index ◽  
Radionuclide Content ◽  
Radium Equivalent ◽  
Radioactivity Monitoring

AbstractIn the 1999 bombing of the Federal Republic of Yugoslavia, NATO forces used ammunition containing depleted uranium. The cleaning of depleted uranium that followed was performed in southern Serbia by the Vinča Institute of Nuclear Sciences between 2002 and 2007 at the locations of Pljačkovica, Borovac, Bratoselce, and Reljan. This paper presents detailed results of radioactivity monitoring four years after cleaning (2011), which included the determination of gamma emitters in soil, water, and plant samples, as well as gross alpha and beta activities in water samples. The gamma spectrometry results showed the presence of natural radionuclides 226Ra, 232Th, 40K, 235U, 238U, and the produced radionuclide 137Cs (from the Chernobyl accident). In order to evaluate the radiological hazard from soil, the radium equivalent activity, the gamma dose rate, the external hazard index, and the annual effective dose were calculated. Considering that a significant number of people inhabit the studied locations, the periodical monitoring of radionuclide content is vital.

scholarly journals Determination of natural radioactivity, 222Rn and 220Rn exhalation rates and radiation hazards of fly ash and fly ash brick used in Baotou, China

2016 ◽  
Vol 31 (3) ◽  
pp. 282-290 ◽  
Author(s):  
Yuxin Li ◽  
Xinwei Lu ◽  
Xiaolan Zhang
Keyword(s):  
Fly Ash ◽  
Effective Dose ◽  
Natural Radioactivity ◽  
Annual Effective Dose ◽  
Hazard Index ◽  
Radium Equivalent Activity ◽  
Radiation Hazards ◽  
External Hazard Index ◽  
Radium Equivalent ◽  
Local Residents

Natural radioactivity levels, 222Rn and 220Rn exhalation rates and radiation hazards of fly ash and fly ash brick used in Baotou, China were determined. The activity concentrations of 226Ra, 232Th, and 40K in fly ash samples ranged from 38.81 to 93.73, 40.34 to 135.17, and 66.92 to 290.86 Bq/kg with an average of 76.52, 109.95, and 170.72 Bq/kg, respectively; while in fly ash brick samples, these radionuclides ranged from 42.43 to 71.60, 76.65 to 208.37, and 94.32 to 489.42 Bq/kg with an average of 53.83, 101.93, and 266.48 Bq/kg, respectively. The exhalation rates of 222Rn and 220Rn in all determined samples were in the range of 1.13-20.50 and 15.60-113.00 mBq/m2s, respectively. The calculated results of the radium equivalent activity, external hazard index, internal hazard index, indoor annual effective dose and outdoor annual effective dose indicated that fly ashes and fly ash bricks collected from some brick factories of Baotou would pose excessive radiation risks to inhabitants and that they are not suitable for use in building construction. The natural radioactivity level of fly ash and fly ash brick needs to be constantly monitored considering the radiation safety of the local residents.

scholarly journals Natural Radioactivity Measurements and Radiation Dose Estimation in Some Sedimentary Rock Samples in Turkey

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
I. Akkurt ◽  
K. Günoğlu
Keyword(s):  
Dose Rate ◽  
Natural Radioactivity ◽  
Sedimentary Rock ◽  
Annual Effective Dose ◽  
Hazard Index ◽  
Absorbed Dose ◽  
Absorbed Dose Rate ◽  
Rock Samples ◽  
External Hazard Index ◽  
Radium Equivalent

The natural radioactivity existed since creation of the universe due to the long life time of some radionuclides. This natural radioactivity is caused byγ-radiation originating from the uranium and thorium series and40K. In this study, the gamma radiation has been measured to determine natural radioactivity of238U,232Th, and40K in collected sedimentary rock samples in different places of Turkey. The measurements have been performed usingγ-ray spectrometer containing NaI(Tl) detector and multichannel analyser (MCA). Absorbed dose rate (D), annual effective dose (AED), radium equivalent activities (Raeq), external hazard index (Hex), and internal hazard index (Hin) associated with the natural radionuclide were calculated to assess the radiation hazard of the natural radioactivity in the sedimentary rock samples. The average values of absorbed dose rate in air (D), annual effective dose (AED), radium equivalent activity (Raeq), external hazard index (Hex), and internal hazard index (Hin) were calculated and these were 45.425 nGy/h, 0.056 mSv/y, 99.014 Bq/kg, 0.267, and 0.361, respectively.

scholarly journals Determination of Physicochemical Parameters and Mineral Compositions of Hand Dug Well Water Samples Collected from Selected Local Government Areas in Oyo State, Nigeria

2021 ◽  
pp. 74-81
Author(s):  
S. A. Okewole ◽  
L. O. Oyekunle ◽  
O. O. Akande ◽  
A. I. Amusat ◽  
A. I. Amuzat ◽  
...  
Keyword(s):  
Local Government ◽  
Water Samples ◽  
Liquid Waste ◽  
Well Water ◽  
North East ◽  
Sewer Systems ◽  
Mineral Compositions ◽  
Total Dissolved Solid ◽  
Dug Well

Potable water is essential for human survival but contaminations through human activities have jeo pardized it. This research will create awareness on the condition of hand dug well water used and reduce transmission of diseases in the study areas. The study deals with the determination of physic-chemical parameters and Mineral composition of water samples collected in the month of September, 2019 from hand dug well from selected local government areas in Oyo State Nigeria, (Ibadan North-East, Ibarapa Central, Afijio, Ogbomoso South and Iseyin local government). The parameters examined were Temperature (ToC), Potential Hydrogen (pH), Conductivity (µ/S-1/cm), Total Dissolved Solid (TDS ppm), Salinity (ppm), Dissolved Oxygen (DO mg/L),Potassium (K+), Calcium (Ca2+), Magnesium (Mg2+), Zinc (Zn2+) and Chloride (Cl-). Standard analytical methods were used. The analytical results of the study revealed that Temperatures are within 27 and 28oC, the pH of the samples ranges from 4.7-6.8, Conductivity falls between 785-1671 µ/S-1/cm. The TDS ranges from 550-1346 ppm, Salinity from 384-956 ppm while DO had the values ranges of 6.03-11.44 mg/l. Potassium (K+) (1.92-6.22 mg/l), Calcium (Ca2+) (14.74-18.52 mg/l), Magnesium (Mg2+) (6.34-7.81 mg/l), Zinc (Zn2+) (0.39-0.47mg/l) and Chloride (Cl-) (26.19-28.70 mg/l). It was noted that, Conductivity, salinity and DO were high compared to WHO and NSDWQ permissible standard limits. This indicated that pollution from dumpsites and erosion has great impact on the water. The mineral compositions of the water samples are within the permissible limit recommended by WHO. It is advisable that proper drainage and sewer systems should be constructed in all areas to ensure proper disposal of hazardous liquid waste, thereby preventing seepage into groundwater and surface water.

Determination of natural radioactivity by gross alpha and beta measurements in ground water samples

2013 ◽  
Vol 47 (9) ◽  
pp. 3103-3108 ◽  
Author(s):  
Ş. Turhan ◽  
E. Özçıtak ◽  
H. Taşkın ◽  
A. Varinlioğlu
Keyword(s):  
Ground Water ◽  
Natural Radioactivity ◽  
Water Samples ◽  
Gross Alpha ◽  
Gross Alpha And Beta
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