Measurement of 226Ra, 232Th and 40K and the associated radiological hazards in Ponnai river sand, Tamilnadu, India using Gamma ray spectrometry

Kumar, C. K. Senthil; Chandrasekaran, A.; Harikrishnan, N.; Ravisankar, R.

doi:10.1080/03067319.2020.1796996

Cited by 12 publications

(15 citation statements)

References 22 publications

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“…Alluvial soils occur along the stream courses. Small-scale industries like fruit canning, granite polishing, brick, textile, sugar, distillery, and dairy are located along the river area [3]. The Ponnai river ows from the North direction and ends in the East direction and the study area starts from Ponnai and ends at Thirumalaicherry, Vellore district, Tamil Nadu as shown in Fig.…”

Section: Study Areamentioning

confidence: 99%

Assessment on Heavy metals contamination of Ponnai River Sand in Tamil Nadu – A statistical approach using pollution indices

Kumar

Chandrasekaran

Gurumoorthy

2023

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Anthropogenic activities such as wastewater discharge by industries, mining, and electricity generation cause an increase in the concentration of some toxic heavy metals in the river environment. In addition, agricultural activities in the vicinity of the river environment may cause the enrichment of heavy metals. In the present study, heavy metal concentrations of Pb, As, Hg, Ni, Zn, Cu, Cr, and Mn along the Ponnai river, Tamil Nadu are considered to assess the role of industrial and agricultural activities. Emanating from the Paradarami hill ranges, the Ponnai River is seasonal and remains generally dry and sandy throughout the year, and does not contribute much to sustained irrigation. However, the river area has the benefit of receiving rainfall during both southwest and northeast monsoon periods. Statistical approach to assess the distribution of heavy metals by means of quantitative pollution parameters like the geo-accumulation index (Igeo), contamination factor (CF), and pollution load index (PLI) indicate the sand samples are not polluted by measured heavy metals and hence there is no influence of anthropogenic activities are in the study area. In this analysis, PLI accounted for 25.34% of the total variance and was positive with loadings of As, Cu, Zn, Cr, Ni, and Mn; PC2 accounted for 11.25% of the total variance and was significant loadings with Cu, Cr, and Ni. These results suggest that the heavy metals represented by PLI were predominantly derived from natural sources, except for As and Cr.

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Section: Study Areamentioning

confidence: 99%

Assessment on Heavy metals contamination of Ponnai River Sand in Tamil Nadu – A statistical approach using pollution indices

Kumar

Chandrasekaran

Gurumoorthy

2023

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“…Measured activity concentrations of 238 U, 232 Th, and 40 K on collected sediment samples are listed in Table 1 in addition to their respective uncertainties. Activity concentration ranges for 238 U, 232 Th, and 40 coast of Tamil Nadu Harb (2008). The existence of black sands in Fig.…”

Section: Measurement Of Gross Alpha and Beta Activity In Sediment Sam...mentioning

confidence: 99%

“…The purpose of the current work is structured precisely within this eld of radionuclide application. As a result, the primary goal of this study is (i) to evaluate gross alpha and gross beta activity concentrations in the northeast of Tamil Nadu coastal sediments, (ii) to investigate the distribution of gamma emitter radionuclides such as 238 U, 232 Th, and 40 K by NaI (Tl) gamma-ray spectrometry, (iii) to assess the radiological risks caused by natural radioactivity in coastal sediments by calculating the radium equivalent activity (Ra eq ), gamma dose rate (D R ), annual effective dose equivalent (AEDE), external hazard index (H ex ), excess lifetime cancer risk (ELCR), annual gonadal dose equivalent (AGDE), (iv) to assess the relationship between the radioactive variables using Pearson correlation analysis.…”

Section: Introductionmentioning

confidence: 99%

“…The most common alphaemitting radioactive isotopes found in coastal sediment include 232 Th and 238 U and their daughters, which can be transported in surface runoff, groundwater, and atmospheric deposition. The beta-emitting radionuclides commonly found in coastal sediments include 40 K, 90 Sr, and 137 Cs.…”

Section: Introductionmentioning

confidence: 99%

“…Thorium and the elemental concentration of Uranium activity content. The measurement of the activity concentrations of 238 U, 232 Th, and40 K in Bq kg − 1 can be converted to eU, eTh elemental concentrations in ppm, and potassium in % using conversion factors given by the International Atomic Energy Agency (IAEA In addition, these recommended conversion factors are 1 ppm of U = 12.35 Bq kg − 1 of 238 U; 1 ppm of Th = 4.06 Bq kg − 1 of 232 Th; and 1% K = 313 Bq kg − 1 of 40 K.…”

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Alpha, beta and gamma radiation assessment along the Northeast Coast of Tamil Nadu, India

Sathish,

Chandrasekaran,

Musthafa

2023

Preprint

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In this study, 21 sediment samples were collected from twenty-one locations along the Northeast coastal area of Tamil Nadu, India to estimate the activity concentration of gross α, gross β, and primordial radionuclides (238U, 232Th, and 40K) using alpha & beta counters, and NaI (Tl) γ-ray detector respectively. Mean activity concentrations were measured as 32 Bq kg− 1 for gross α, 621 Bq kg− 1 for gross β, 60 Bq kg− 1 for 238U, 70 Bq kg− 1 for 232Th, and 573 Bq kg− 1 for 40K. The different radiological parameters are calculated for all samples and compared to assess the complete radiological profile of the sediments. The average activities of 238U, 232Th, and 40K are higher than the world average values of UNSCEAR reports. Gamma dose rate and annual effective dose equivalent in the sediment samples are more than the recommended safety levels. eU/eTh ratio applied for the paleo-oxygenation state of the coastal sediments.

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Natural radioactivity and mineral assessment in red and black colored soils collected from agricultural area of Tiruvannamalai district of Tamil Nadu, India

Sathish¹,

Chandrasekaran²,

Tamilarasi³

et al. 2022

J Radioanal Nucl Chem

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Measurement of ²²⁶Ra, ²³²Th and ⁴⁰K and the associated radiological hazards in Ponnai river sand, Tamilnadu, India using Gamma ray spectrometry

Cited by 12 publications

References 22 publications

Assessment on Heavy metals contamination of Ponnai River Sand in Tamil Nadu – A statistical approach using pollution indices

Assessment on Heavy metals contamination of Ponnai River Sand in Tamil Nadu – A statistical approach using pollution indices

Alpha, beta and gamma radiation assessment along the Northeast Coast of Tamil Nadu, India

Natural radioactivity and mineral assessment in red and black colored soils collected from agricultural area of Tiruvannamalai district of Tamil Nadu, India

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