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Table 1 Anionic content in megaliths at Ħaġar Qim Temples

From: Sheltering archaeological sites in Malta: lessons learnt

  Chlorides (ppm) Sulfates (ppm) Nitrates (ppm)
Vannucci et al. [5] 200–6293 0–3238 0–740
Mandrioli et al. (see footnote 7) 1863–12,363 1187–84,063 252–8587
  1. Sampling and analysis by Vannucci et al. took place from 1986 to 1989; Mandrioli et al. sampled in 2005. In both cases the number of samples analysed was 10 samples, from similar but not identical locations