Levels of heavy metals in Swarna rice (Oryza sativa) grown in Dinajpur district of Bangladesh

Published: 2 April 2019| Version 4 | DOI: 10.17632/kby42kyt5x.4
Md. Azizul Haque,


Then rice sample was collected during Aman season (November-January, 2017) from nine different locations such as Sundarpur (SR01), Poyesh (SR02), Dhonigram (SR03) at Kaharol (25° 47′ 4.942″ N, 88° 35′ 46.593″ E), Teghra (SR04) , Kajihat (SR05), Kanchan (SR06) at Biral (25° 37′48.139″ N, 88° 33′ 20.75″ E, and Gabura (SR07), Kawgaon (SR08), Pulhat (SR09) at Sadar (25° 36′ 36.814″ N, 88° 38′ 59.403″ E) sub-districts in Dinajpur, Bangladesh.


Steps to reproduce

One gram of rice powder from each group (NR, BR, and FR) was digested using a 15 ml ternary solution (HNO3/ H2SO4/ HClO4, 5:1:1 v/v) at 80 ºC to make the solution transparent. The total concentration of As, Cd, Cr, Pb, and Zn in digested solution was quantified using a Flame atomic absorption spectrophotometer (FAAS; 240FS, Agilent, Australia). Prior to quantification of HMs, the FAAS was calibrated using a standard of the specific metals. The wavelength (λ) was set at 193.7, 228.8, 357.9, 283.3, and 213.9 nm for the standard As, Cd, Cr, Pb, and Zn solutions, respectively.


Metals, Rice