Distribution of arsenic and mercury in subtropical coastal beachrock, Gulf of Mannar, India

Journal of Earth system science

G Victor Rajamanickam2¹  J Dajkumar Sahayam1²  N Chandrasekar1²  S Krishna Kumar1² 

[1] Centre for Advance Research in Indian System of Medicine, Sastra University, Thanjavur, Tamil Nadu 613 402, India.$$;Centre for GeoTechnology, Manonmaniam Sundaranar University, Tirunelveli, Tamil Nadu 627 012, India.$$

关键词: Beachrock;    Gulf of Mannar;    As;    Hg;    subtropical coast.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

An assessment of coastal pollution was made on the basis of trace element concentrations (arsenic –As, mercury – Hg) in the Gulf of Mannar. The beachrock samples were collected along the coastal tracts between Rameswaram and Kanyakumari. The samples were dried and digested to determine the As and Hg using atomic absorption spectrophotometer (AAS-air-acetylene and nitrous oxide method). The As and Hg accumulation status of the beachrock was assessed using geo-accumulation index values (𝐼𝑔𝑒𝑜). The accumulation of As and Hg in the beachrock ranges from 2.75 to 20.72 𝜇 g g−1 and from 0.06 to 0.31 𝜇 g g−1, respectively. The As and Hg concentrations in the beachrocks are compared with crustal average values and average of other region sediments. The possible source of the contamination is from atmospheric deposition and anthropogenic activities.

【 授权许可】

Unknown