Metal concentrations in soils around the copper smelter and surrounding industrial complex of Port Kembla, NSW, Australia

E. Martley*, B. L. Gulson, H. -R. Pfeifer

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    106 Citations (Scopus)

    Abstract

    Anthropogenic emissions of metals from sources such as smelters are an international problem, but there is limited published information on emissions from Australian smelters. The objective of this study was to investigate the regional distribution of heavy metals in soils in the vicinity of the industrial complex of Port Kembla, NSW, Australia, which comprises a copper smelter, steelworks and associated industries. Soil samples (n=25) were collected at the depths of 0-5 and 5-20 cm, air dried and sieved to <2 mm. Aqua regia extractable amounts of As, Cr, Cu, Pb and Zn were analysed by inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma atomic emission spectrometry (ICP-AES). Outliers were identified from background levels by statistical methods. Mean background levels at a depth of 0-5 cm were estimated at 3.2 mg/kg As, 12 mg/kg Cr, 49 mg/kg Cu, 20 mg/kg Pb and 42 mg/kg Zn. Outliers for elevated As and Cu values were mainly present within 4 km from the Port Kembla industrial complex, but high Pb at two sites and high Zn concentrations were found at six sites up to 23 km from Port Kembla. Chromium concentrations were not anomalous close to the industrial complex. There was no significant difference of metal concentrations at depths of 0-5 and 5-20 cm, except for Pb and Zn. Copper and As concentrations in the soils are probably related to the concentrations in the parent rock. From this investigation, the extent of the contamination emanating from the Port Kembla industrial complex is limited to 1-13 km, but most likely <4 km, depending on the element; the contamination at the greater distance may not originate from the industrial complex.

    Original languageEnglish
    Pages (from-to)113-127
    Number of pages15
    JournalScience of the Total Environment
    Volume325
    Issue number1-3
    DOIs
    Publication statusPublished - 5 Jun 2004

    Keywords

    • smelter
    • arsenic
    • chromium
    • copper
    • lead
    • zinc
    • soils
    • contamination
    • background levels
    • Port Kembla

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