Elemental sulfur exists as a variety of forms in natural systems, from dissolved forms (noted as S8 (aq.)) to bulk elemental sulfur most stable as α-S8 (bulk) (but existing in at least 180 different allotropes and polymorphs). Elemental sulfur can form via a number of biotic and abiotic processes, many of which begin with S-S bonding of practically unlimited length, forming chains and rings of ...

Soil and stream water aluminium and hydrogen ion data are presented for three Scottish catchments that are both acidic and acid sensitive. Stream waters have pH values ranging from 3.9 to 7.1 and aluminium concentrations in the range 0.07 to 129 MM l". Within the soils H concentrations decline with depth, being highest in the organic horizons and lowest in the inorganic horizons. Mean EF concen...