Browsing by Author "Pulhani, V."

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    Bioaccumulation and health risks of heavy metals associated with consumption of rice grains from croplands in Northern India
    (Taylor and Francis Inc., 2017) Yadav, P.; Singh, B.; Garg, V.K.; Mor, S.; Pulhani, V.
    The present study focused on micronutrients and nonessential toxic heavy metals quantification and their bio-concentration in soil?rice system in Haryana, India. Composite samples of rice grains and paddy fields' soil were collected, processed and analyzed for heavy metals. Nutrient and heavy metals' content of paddy fields' soil varied over a wide range, having highest Fe content followed by Cu > Cr > Pb > Ni > Zn > Co > Cd. Most of the metals viz. Fe, Zn, Cu and Co found profusely in rice grains were essential micronutrients. Bio-concentration factors (BCFs) in rice grains were in the following order: Zn (0.11) > Co (0.10) > Cu (0.08) = Cr (0.08) > Ni (0.02) > Pb (0.011) > Cd (0.009) > Fe (0.003), indicating higher accumulation of micronutrients than non-essential toxic heavy metals. Principal component analysis revealed three factors accounting for 70% of the total variance which supported correlation among electrical conductivity (EC)-Na, EC-cation exchange capacity (CEC), CEC-Na, pH-TOC, and BCFCu-BCFZn. Health risk indices anticipated that the grains are safe for consumption as non-carcinogenic hazard quotients were less than unity for all the studied heavy metals. ? 2017 Taylor & Francis Group, LLC.
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    Transfer Factors and Effective Dose Evaluation Due to Natural Radioactivity in Staple Food Grains from the Vicinity of Proposed Nuclear Power Plant
    (Springer Netherlands, 2018) Yadav, P.; Garg, V.K.; Singh, B.; Pulhani, V.; Mor, S.
    This study focused on quantification of radioactivity concentration of naturally occurring radioactive materials 40K, 226Ra and 232Th in most staple food grain i.e. wheat of the study area using gamma spectrometry?for two years. 40K, 226Ra and 232Th activities were detectable in most of the wheat grain samples and ranged 111.3?245.7, <0.04?0.37 and <0.015?0.11?Bq?kg?1 respectively. Effective dose due to the consumption of radionuclides via wheat grains was calculated on its estimated annual intake by the local populace. Also to evaluate transfer factors of radionuclide?s, corresponding fields? soils were collected and assessed for their radioactivity content. Measured average radioactivity levels in soils from the site were in order: 40K (544.7???14.6?Bq?kg?1)?>?226Ra (41???1.6?Bq?kg?1)?>?232Th (32.3???1.2?Bq?kg?1) and comparable to the corresponding levels obtained worldwide. The geometric mean transfer factors of studied NORMs in wheat grains were in order: 40K (0.371???0.07)?>?226Ra (0.003???0.002)?>?232Th (0.001???0.001). Significant positive dependencies of transfer factors of 40K, 226Ra and 232Th in wheat grains were observed with total organic carbon content of soil. Estimated annual effective doses from ingestion of the wheat were 1.37E?01?mSv year?1 for 40K, 4.14E?03?mSv year?1 for Ra226 and 1.10E?03?mSv year?1 for 232Th, well under the permissible cumulative global average.. ? 2017, Springer Science+Business Media Dordrecht.