Open AccessThe use of N HNO3 to determine copper and zinc levels in heavy-metal polluted tropical soils
Author(s) -
Abdul Kadir Salam,
M Milanti,
Gustavo Bonifácio Rocha e Silva,
Farhan Fatur Rachman,
I M T D Santa,
Diah Rizki,
Hery Novpriansyah,
S Sarno
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/905/1/012001
Subject(s) - spinach , zinc , chemistry , soil water , copper , metal , amendment , environmental chemistry , soil test , nuclear chemistry , environmental science , soil science , biochemistry , organic chemistry , political science , law
This study compared N HNO 3 to other methods to determine plant available heavy metals in heavy-metal polluted soils. Soil samples were obtained from an experimental field treated with industrial waste after 22 years of the amendment and employed to conduct the comparative and correlation study. Soil samples were analyzed for Cu using various methods, planted in a glass house with several plants, and analyzed for soil and plant Cu and Zn. The relative strength of the chemical extractants followed the order of N HNO 3 ≈ N HCl > Buffered DTPA ≈ Unbuffered DTPA > M CaCl 2 ≈ N NH 4 OAc pH 7. A high correlation was observed for soil extracted Cu by M CaCl 2 or N NH 4 OAc pH 7 or N HCl vs. Buffered DTPA and N HNO 3 or N NH 4 OAc pH 7 vs. N HCl. High correlations of plant and soil Cu extracted by N HNO 3 were shown by caisim, water spinach, land spinach, and corn, while plant and soil Zn were shown by caisim, water spinach, land spinach, and lettuce.