Implications of co-contamination with aged heavy metals ...
2018-12-1 · Given the relatively low concentration of TPH and heavy metals, it was not surprising that most of the test samples showed little or no enhanced toxicity using the Microtox test (TU column in Table 1).However, several soil samples showed significant toxicity levels (p ≤ 0.05) ().A comparison of the TPH concentration, metal concentrations and relative toxicity for each soil is presented in ...