1. ALcontrol Laboratories, 2011. Determination of Hexavalent Chromium in Waters and Leachates using the Kone Analyser. Method Number: TM 241, third ed. ALcontrol Laboratories, Flintshire, UK, p. 1.
2. ALcontrol Laboratories, 2014. Sampling Information Sheet for Environmental Samples, fifth ed. [ebook]. ALcontrol Laboratories, Flintshire, UK, pp. 1–2. Available at: (Accessed 5 Dec. 2016).
3. ALcontrol Laboratories, 2015. Determination of Chemical Oxygen Demand. Method Number: TM 107. 32nd ed. ALcontrol Laboratories, Flintshire, UK, p. 1.
4. ALcontrol Laboratories, 2016. Determination of Total organic and Total inorganic carbon. Method Number: TM090. 30th ed. ALcontrol Laboratories, Flintshire, UK, p. 1.
5. Speciation of heavy metals in landfill leachate: a review;Baun;Waste Manage. Res.,2004