@misc{indiciae52136f07663d,
  title = {Heavy metal sequential extraction methods--a modification for tropical soils.},
  author = {M L Silveira and L R F Alleoni and G A O'Connor and A C Chang},
  year = {2006},
  doi = {10.1016/j.chemosphere.2006.01.018},
  url = {https://pubmed.ncbi.nlm.nih.gov/16487572/},
  note = {Source identifier: 16487572}
}