1. Council Directive 76/464/EEC of 4 May 1976 on pollution caused by certain dangerous substances discharged into the aquatic environment of the community;C.o.t.E. Communities;Official J. Euro. Commun. L,1976
2. EPA, Code of Federal Regulations, Title 40- Protection of Environment, Part 423, Appendix A to List of 126 Priority Pollutants (http://www.epa.gov/region1/npdes/permits/generic/prioritypollutants.pdf), 1982.
3. J. Lab, The Element Antimony, from online fact feature entitled “It’s Elemental” (https://education.jlab.org/itselemental/ele051.html), 2019.
4. Speciation and preconcentration of Sb(III) and Sb(V) on alumina using phosphoric acid under pH-controlled conditions;Smichowski;Spectrochim. Acta, Part B,1994
5. Analytical methods for antimony speciation in waters at trace and ultratrace levels. A review;Smichowski;Fresenius J. Anal. Chem.,1998