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Heavy metal accumulation in indoor ceiling fan dust from residential areas of Kathmandu Municipality, Nepal: A potential urban environmental problem

Author Affiliations

  • 1Faculty of Science, Padma Kanya Multiple Campus, Tribhuvan University, Bagbazar, Kathmandu, Nepal
  • 2Faculty of Science, Padma Kanya Multiple Campus, Tribhuvan University, Bagbazar, Kathmandu, Nepal
  • 3Faculty of Science, Padma Kanya Multiple Campus, Tribhuvan University, Bagbazar, Kathmandu, Nepal

Res.J.chem.sci., Volume 7, Issue (10), Pages 16-20, October,18 (2017)

Abstract

Heavy metals accumulation in indoor dust from residential areas of Kathmandu municipality is increasingly becoming an urban environmental issue of health concern. In this study, ceiling fan dust samples were collected from residential buildings of 5 core areas of Kathmandu viz., Basantapur, Nayabazar, Bhotahity, Bagbazar and Kirtipur (reference). The collected dust samples were analyzed for the concentrations of Cd, Zn, Ni and Cu using Atomic Absorption Spectrophotometer. Metal concentrations indicated that ceiling fan dust from all the sampling sites contained high levels of heavy metals compared to reference site. Results revealed that Bagbazar site was found to have the highest accumulation of all the metals and Basantapur recorded the lowest concentrations in dust samples. In all the sampling locations, the metal accumulations were obtained in abundance following the order as Zn > Cu > Ni > Cd. The average accumulations of all the sampling sites for Cd, Zn, Ni and Cu in dust samples were 0.77, 423.68, 29.04 and 244.08 &

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