scholarly journals Radon and thoron levels in the dwellings of Buddonithanda: a village in the environs of proposed uranium mining site, Nalgonda district, Telangana state, India

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
G. Suman ◽  
K. Vinay Kumar Reddy ◽  
M. Sreenath Reddy ◽  
Ch. Gopal Reddy ◽  
P. Yadagiri Reddy
Keyword(s):  
Indoor Environment ◽  
Geometric Mean ◽  
Uranium Mining ◽  
Radioactive Isotopes ◽  
Inhalation Dose ◽  
Mining Site ◽  
Mining Sites ◽  
Seasonal And Diurnal Variation ◽  
Telangana State ◽  
Nalgonda District

AbstractElevated levels of radon and thoron in the indoor atmosphere may cause the deleterious effects on the mankind. Mining sites and their environs attract a special interest in radon studies as higher levels are frequently reported in the habitats. In the present study, radon and thoron levels were measured in the dwellings of Buddonithanda, a village in the environs of proposed uranium mining site, with pin-hole (SSNTDs) dosimeters for the period of a year. The measured radon and thoron levels were found to vary widely from 14 to 675 Bq m−3 (geometric mean = 94 Bq m−3) and from 21 to 704 Bq m−3 (geometric mean = 121 Bq m−3), respectively. An attempt was made to understand the large spatial variation of these levels. The seasonal and diurnal variation studies were used in unraveling the behavior of the radioactive isotopes in indoor environment and the same was explained with the help of a simplified mathematical model. Quantification of inhalation dose due to radon and thoron was done with suitable occupancy factors.

scholarly journals Phytosociological Studies on Tree Species of Peddagattu and Sherepally Area, a Proposed Site for Uranium Mining Project, Nalgonda District, Telangana State, India

2016 ◽  
Vol 50 ◽  
pp. 33-40
Author(s):  
A. Baleeshwar Reddy ◽  
V. Hanumantha Rao ◽  
V. Vasudeva Rao ◽  
A. Vijaya Bhasker Reddy
Keyword(s):  
Tree Species ◽  
Wiener Index ◽  
Uranium Mining ◽  
Cassia Fistula ◽  
Floristic Inventory ◽  
Mining Project ◽  
Baseline Information ◽  
Telangana State ◽  
Nalgonda District ◽  
Albizia Amara

The present study deals with the quantitative floristic inventory of Peddagattu and Sherepally area, Nalgonda district, Telangana State, India. The study resulted in documentation of 50 tree species belongs to 41 genera and 35 families. The families, Mimosaceae, Caesalpiniaceae and Fabaceae are dominated. Among the tree speciesCassia fistulahas showed highest IVI in Peddagattu, while in SherepallyAlbizia amarahas recorded highest IVI. Shannon–Wiener index (H') ranges from 2.41 to 3.03. The present study can serve as baseline information for phytosociolgical studies on tree species of Peddagattu and Sherepally area, a proposed site for Uranium mining project, Nalgonda district, Telangan State, India.

INDOOR RADON AND THORON IN THE VICINITY OF PROPOSED URANIUM MINING SITE: A CASE STUDY AT DASARLAPALLY VILLAGE, TELANGANA STATE, INDIA

2020 ◽  
Vol 189 (2) ◽  
pp. 205-212 ◽  
Author(s):  
G Suman ◽  
K Vinay Kumar Reddy ◽  
M Sreenath Reddy ◽  
Ch Gopal Reddy ◽  
P Yadagiri Reddy
Keyword(s):  
Activity Concentration ◽  
Indoor Radon ◽  
Radiation Risk ◽  
Uranium Mining ◽  
Average Concentration ◽  
Nuclear Radiation ◽  
Inhalation Dose ◽  
Mining Sites ◽  
Different Types ◽  
Annual Average Concentration

Abstract Studies are being conducted for the past few decades in and around the uranium mining sites across the globe to identify environmental nuclear radiation risk to the common public. The area near Dasarlapally village was identified for uranium exploration by the AMDER, Hyderabad. The present study was carried out to measure the indoor radon and thoron activity concentrations in the dwellings of Dasarlapally village. For this purpose different types of dwellings were chosen randomly across the village. The measured annual average concentration of radon and thoron in dwellings were found to be 141 ± 42 and 139 ± 77 Bqm−3, respectively, and the calculated annual effective inhalation dose due to radon was determined to be 3.5 mSv. Seasonal variation and diurnal variation of radon and thoron activity concentration were investigated. The variation of radon and thoron activity concentration in different types of dwellings was also studied, and the variation was found to be statistically insignificant. The uncertainty propagated in the effective inhalation dose due to thoron was discussed.

scholarly journals Exotic Floristic Composition of Peddagattu, the Proposed Site for Uranium Mining, Nalgonda District, Telangana State, India

2015 ◽  
Vol 43 ◽  
pp. 10-16
Author(s):  
A. Baleeshwar Reddy ◽  
V. Hanumantha Rao ◽  
V. Vasudeva Rao ◽  
A. Vijaya Bhasker Reddy
Keyword(s):  
South America ◽  
Exotic Species ◽  
Floristic Composition ◽  
Uranium Mining ◽  
Tropical Africa ◽  
Tropical America ◽  
Telangana State ◽  
Nalgonda District

The present investigation reflects the findings of exotic floristic composition at Peddagattu, Nalgonda district, Telangana State, India. A total of 125 exotic species of taxa belonging to 101 genera and 44 families were recorded in the study. Leguminosae is the most dominant family representing with 21 species, followed by Compositae (14 species), Apocynaceae, Convolvulaceae and Poaceae (7 species each). As per the nativity of exotic species representation in the study area are mostly from belongs to tropical America followed by tropical Africa and South America at Peddagattu.

An outbreak investigation of suspected Chikungunya fever in Nalgonda District, Telangana state

2014 ◽  
Vol 3 (4) ◽  
pp. 219 ◽  
Author(s):  
Suguna Dumpala ◽  
Nagaraj Kondagunta ◽  
VarunMohan Malhotra ◽  
GuruPrasad Venna ◽  
KishoreYadav Jothula
Keyword(s):  
Outbreak Investigation ◽  
Chikungunya Fever ◽  
Telangana State ◽  
Nalgonda District

scholarly journals Detection of Legionella species, the influence of precipitation on the amount of Legionella DNA, and bacterial microbiome in aerosols from outdoor sites near asphalt roads in Toyama Prefecture, Japan

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Jun-ichi Kanatani ◽  
Masanori Watahiki ◽  
Keiko Kimata ◽  
Tomoko Kato ◽  
Kaoru Uchida ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Indoor Environment ◽  
Geometric Mean ◽  
Amplicon Sequencing ◽  
Positive Sample ◽  
Outdoor Environment ◽  
Rrna Gene ◽  
Total Precipitation ◽  
Monthly Total Precipitation

Abstract Background Legionellosis is caused by the inhalation of aerosolized water contaminated with Legionella bacteria. In this study, we investigated the prevalence of Legionella species in aerosols collected from outdoor sites near asphalt roads, bathrooms in public bath facilities, and other indoor sites, such as buildings and private homes, using amoebic co-culture, quantitative PCR, and 16S rRNA gene amplicon sequencing. Results Legionella species were not detected by amoebic co-culture. However, Legionella DNA was detected in 114/151 (75.5%) air samples collected near roads (geometric mean ± standard deviation: 1.80 ± 0.52 log10 copies/m3), which was comparable to the numbers collected from bathrooms [15/21 (71.4%), 1.82 ± 0.50] but higher than those collected from other indoor sites [11/30 (36.7%), 0.88 ± 0.56] (P < 0.05). The amount of Legionella DNA was correlated with the monthly total precipitation (r = 0.56, P < 0.01). It was also directly and inversely correlated with the daily total precipitation for seven days (r = 0.21, P = 0.01) and one day (r = − 0.29, P < 0.01) before the sampling day, respectively. 16S rRNA gene amplicon sequencing revealed that Legionella species were detected in 9/30 samples collected near roads (mean proportion of reads, 0.11%). At the species level, L. pneumophila was detected in 2/30 samples collected near roads (the proportion of reads, 0.09 and 0.11% of the total reads number in each positive sample). The three most abundant bacterial genera in the samples collected near roads were Sphingomonas, Streptococcus, and Methylobacterium (mean proportion of reads; 21.1%, 14.6%, and 1.6%, respectively). In addition, the bacterial diversity in outdoor environment was comparable to that in indoor environment which contains aerosol-generating features and higher than that in indoor environment without the features. Conclusions DNA from Legionella species was widely present in aerosols collected from outdoor sites near asphalt roads, especially during the rainy season. Our findings suggest that there may be a risk of exposure to Legionella species not only in bathrooms but also in the areas surrounding asphalt roads. Therefore, the possibility of contracting legionellosis in daily life should be considered.

scholarly journals Levels of heavy metals in soils and food crops cultivated within selected mining sites in Ebonyi State, Nigeria

2021 ◽  
Vol 2 (1) ◽  
pp. 84-95
Author(s):  
David Okechukwu Okeke ◽  
◽  
Jonathan Chinenye Ifemeje ◽  
Keyword(s):  
Heavy Metals ◽  
Control Site ◽  
Soil Samples ◽  
World Health ◽  
Food Crops ◽  
Food Crop ◽  
Mining Site ◽  
Mining Sites ◽  
Health Association ◽  
Health Organization

The level of heavy metals (Fe, Cu, As, Pb, Cd, Mg, Ca, Hg, Ni, Cr, Zn, Ag, Co, Mo, Se and Al) in soils and food crops (okra, cassava and rice) cultivated within selected mining sites in Ebonyi State, Nigeria were determined using FS240AA Atomic Absorption Spectrophotometer (AAS) according to the method of American Public Health Association (APHA). Soil samples were collected from Enyigba mining site, Ikwo mining site, AmeriAmekamining site, Izza mining site, MkpumeAkwatakwa mining site and MpumeAkwaokuku mining site while the food crop samples (okra, cassava and rice) were collected from the farmlands within the mining sites. Control samples were collected 500m away from the mining destinations were there was no evidence of mining activities on the soils. A total of sixty sub-samples and six control soil samples were collected for this study. Generally, the values of all the heavy metals analyzed for soil and food crop samples were higher than the values recommended by the World Health Organization (WHO), and those from the control site suggesting possible mobility of the metals from mining sites to farmlands through leaching and runoffs. The findings in this study also revealed that the food crops contain heavy metals exceeding the maximum permissible concentration, and could be detrimental to human health when they are consumed.

scholarly journals Assessment of thoron contribution to indoor radon exposure in Canada

2022 ◽  
Author(s):  
Jing Chen
Keyword(s):  
Detection Limit ◽  
Indoor Environment ◽  
Metropolitan Areas ◽  
Indoor Radon ◽  
Geometric Mean ◽  
Pooled Analysis ◽  
Geometric Standard Deviation ◽  
Radon Exposure ◽  
Canadian Population ◽  
Almost All

AbstractFrom 2007 to 2013, simultaneous radon (222Rn) and thoron (220Rn) measurements were conducted in a total of 3534 residential homes in 34 metropolitan areas covering 71% of the Canadian population. While radon levels were above the detector’s detection limit in almost all homes, thoron concentrations were measurable in only 1738 homes. When analysis was limited to homes where thoron concentrations exceeded the detection limit, a pooled analysis confirmed that thoron is log-normally distributed in the indoor environment, and the distribution was characterized by a population-weighted geometric mean of 13 Bq/m3 and a geometric standard deviation of 1.89. Thoron contribution to indoor radon dose varied widely, ranging from 1.3 to 32% geographically. This study indicated that on average, thoron contributes 4% of the radiation dose due to total indoor radon exposure (222Rn and 220Rn) in Canada.

Sign in / Sign up

Export Citation Format

Share Document