The Effect of Meteorological Parameters on Radon Concentration in Soil Gas

Kulali, Feride; Akkurt, I.; Özgür, Nevzat

doi:10.12693/aphyspola.132.999

Cited by 46 publications

(12 citation statements)

References 11 publications

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“…Pengambilan sampel dilakukan pada 56 titik di sekitar Gunung Tampomas, terutama di sekitar lokasi mata air panas (Gambar 1) di utara Gunung Tampomas, kemudian sisi timur, selatan dan menerus ke arah barat daya dimana terdapat mata air panas Ciseupan. Keseluruhan pengambilan sampel dilakukan dalam kondisi cuaca yang sama, yaitu cuaca cerah tanpa hujan untuk meminimalisir pengaruh meteorologis seperti kandungan air dan kelembaban tanah, temperatur dan kecepatan angin [20,21] terhadap kandungan 222 Rn, yaitu semakin tinggi kandungan air akan menurunkan kandungan 222 Rn. Selain itu, sebagian besar lokasi pengukuran berada dalam formasi geologi yang relatif sama (Gambar 1) sehingga diharapkan jenis batuan dan mineral juga sama.…”

Section: Metodologiunclassified

Konsentrasi Radon-222 dalam Gas Tanah untuk Deteksi Distribusi Permeabilitas di Daerah Panas Bumi Tampomas, Jawa Barat

2020

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ABSTRAK Daerah upflow dalam sistem panas bumi merupakan daerah dengan permeabilitas yang tinggi sebagai lintasan naiknya fluida panas bumi ke permukaan, yang umumnya ditandai dengan adanya fumarol di permukaan. Gunung Tampomas, Jawa Barat, merupakan salah satu lokasi potensi panas bumi yang memiliki manifestasi berupa mata air panas, namun tidak memiliki fumarol atau steam vent. Zona permeabel atau upflow sulit untuk diidentifikasi. Isotop 222Rn merupakan isotop geogenik yang konsentrasinya di dalam gas tanah dapat menunjukkan permeabilitas, baik permeabilitas primer maupun sekunder (struktur). Serangkaian pengukuran 222Rn dalam gas tanah telah dilakukan pada 56 titik di sekitar Gunung Tampomas untuk melihat anomali kandungan 222Rn dengan menggunakan metode statistik, serta relasinya antara daerah dengan permeabilitas tinggi dengan struktur geologi dan manifestasi panas bumi. Hasil pengukuran dan evaluasi statistik menunjukkan bahwa konsentrasi 222Rn terbagi menjadi konsentrasi rendah (latar), konsentrasi tinggi, dan anomali. Nilai latar berada di 16 lokasi berada di bawah 825 Bq/m3, sementara konsentrasi tinggi di 32 lokasi antara 825–7688 Bq/m3 dan anomali di 8 lokasi di atas 7688 Bq/m3. Sebagian besar lokasi dengan konsentrasi 222Rn tinggi dan anomali letaknya tidak berdekatan dengan kelurusan struktur, Seluruh pengukuran yang berdekatan dengan mata air panas memiliki konsentrasi 222Rn tinggi dan anomali. Mata air panas Ciseupan merupakan pengecualian yang mengindikasikan air panas tersebut keluar secara lateral (outflow). Selain itu, tidak ada indikasi korelasi antara konsentrasi 222Rn dengan elevasi lokasi pengukuran. Proses perpindahan 222Rn dari reservoir ke permukaan diperkirakan melalui mekanisme gas pembawa yang berasal dari reservoir panas bumi melalui zona permeabel.ABSTRACT Upflow zone in the geothermal system is a zone with high permeability that serves as a path for geothermal fluid to ascend to the surface, which usually marked with fumarole at the surface. Mount Tampomas, West Java, is a potential geothermal site with some thermal manifestation in the form of hot springs, but no fumarole or steam vent exists. The up-flow or the permeable zone is difficult to identify. 222Rn isotope is a radiogenic isotope that its concentration in soil gas can infer primary permeability as well as secondary permeability (structure). Series of 222Rn measurement in soil gas has been performed from 56 sampling positions around Mount Tampomas to evaluate 222Rn anomaly by a statistical method and its relation with high permeability area, geological structure, and geothermal manifestation. The measurement and statistical evaluation results show that 222Rn concentration clustered into low (background), high, and anomaly concentration. The background values in 16 places are below 825 Bq/m3, while a high level in 32 areas between 825–7688 Bq/m3 and anomaly in 8 places above 7688 Bq/m3. Most of the locations with high and anomaly 222Rn concentrations did not locate near a structure lineament. All measurements near hot springs have a high 222Rn and anomaly. Ciseupan hot spring is an exception which may indicate that the hot spring is discharged laterally (outflow). Furthermore, there is no indication of a correlation between 222Rn with the elevation of the measurement location. The process of 222Rn transfer from the reservoir to the surface is considered by the geothermal reservoir's gas carrier mechanism through permeable zones.

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Section: Metodologiunclassified

Konsentrasi Radon-222 dalam Gas Tanah untuk Deteksi Distribusi Permeabilitas di Daerah Panas Bumi Tampomas, Jawa Barat

2020

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“…As a matter of fact, these factors must be taken into account when determining radon levels in environmental measurements. [ 12 ] Exposure to radon and its products in indoor spaces causes serious problems and it is of great importance to determine the dose to which the public is exposed. Radon measurements are easier, more practical and more convenient, providing rapid and accurate estimates of public radiation exposure.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of radon‐induced radiation risk in indoor environments

Elek,

Çam,

Öztürk

2023

CLEAN Soil Air Water

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In general people spend most of their time in enclosed environments, therefore, they are exposed to indoor radon and its progeny. The paper discusses the variables influencing indoor radon levels. It assesses the correlation between indoor radon levels with temperature, humidity, and pressure, as well as seasonal variables. Radon activity concentrations were measured in Ege University's laboratories and Classroom using a digital radon gas detector. After statistical analysis, the results were compared to committee‐permissible limit levels (ICRP, WHO, and EU). It was found that the average radon activity concentrations were below the recommended 300 Bq m–3 limit value (EU), ranging from 58.4 to 216.0 Bq m–3. This study emphasized the significance of measuring and assessing the indoor radon levels in laboratories and classrooms in particular, in order to safeguard the students and faculty members from radon‐related health issues.

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“…Radon is emanated from solid grains and propagates through the soil pores, filled with air and water and then it is transported by diffusion and advection through this space and is exhaled into the atmosphere. Exhalation rates are highly affected by the permeability of the soil and by atmospheric parameters, such as rainfall, real humidity, temperature, and barometric pressure (5)(6) .…”

Section: Introductionmentioning

confidence: 99%

Radon activity assessment of thermal water in Spas of Kosovo by using different methods

Bahtijari

Nafezi²,

Hodolli³

et al. 2022

Int J Radiat Res

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Background: Exposure to radon and radon decay products at home and at workplaces constitutes one of the greatest and perhaps the greatest risk from ionizing radiation. In this study, radon activity concentrations were measured in thermal water, spring water, in the water of baths/pools, and indoor air of five spas in Kosovo. Materials and Methods: Different comparison active methods were used and also the long-term measurements were performed. Results: The radon activity concentrations were found to be 23 Bq l -1 to 314 Bq l -1 in water coming from a thermal source, 13 Bq l -1 to 270 Bq l -1 in water of baths, 25 Bq l -1 to 108 Bq l -1 , in water of pools and 16 Bq l -1 to 67 Bq l -1 in taps water. The indoor radon concentrations and soil gas measurements near the thermal spas has range from 24 Bq m -3 to 506 Bq m -3 respectively from 4978 Bq m -3 to 67249 Bq m -3 . Conclusions: The indoor air radon concentrations in workrooms, baths, and pools only in one case exceeded 500 Bq m -3 . The reason of high indoor radon concentration could have been the location of this room, located near the baths and pool of spa. The maximum radon activity concentration in taps water is the only that did not exceed the limit from 100 Bq l -1 .

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The Effect of Meteorological Parameters on Radon Concentration in Soil Gas

Cited by 46 publications

References 11 publications

Konsentrasi Radon-222 dalam Gas Tanah untuk Deteksi Distribusi Permeabilitas di Daerah Panas Bumi Tampomas, Jawa Barat

Konsentrasi Radon-222 dalam Gas Tanah untuk Deteksi Distribusi Permeabilitas di Daerah Panas Bumi Tampomas, Jawa Barat

Evaluation of radon‐induced radiation risk in indoor environments

Radon activity assessment of thermal water in Spas of Kosovo by using different methods

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