A natural gradient in pH, alkalinity, and salinity produced in an
acid sulfate acidified estuary in NSW, Australia (Amaral et al.
The
acid sulfate soil showed similar C[O.sub.2] fluxes among the different closure treatments--the emissions were 0.43-0.62 mg C[O.sub.2] [kg.sup.-1] soil [h.sup.-1] (Fig.
With little room for area expansion, improving the fertility of marginal soils (such as
acid sulfate soils) is one of the ways to increase rice production worldwide.
UDCA-7S was used as an internal standard for quantification because isotopically labeled 3[beta]-hydroxy-[[DELTA].sup.5]-bile
acid sulfates are not available and because this structural analog does not exist endogenously in human urine.
The indicators included soil morphological attributes such as colour, mottles, pedogenic segregations, and horizonation; physical attributes such as texture; and chemical attributes such as organic carbon,
acid sulfate chemistry, and salinity.
"Identification and Management of
acid sulfate soils".
The first stage of a national atlas of
acid sulfate soils was recently uploaded to the Australian Soil Resource Information System website (ASRIS).
(22.) Bigham JM, Schwertmann U, Traina SJ, Winland RL and Wolf M: Schwertmannite and the chemical modeling of iron in
acid sulfate waters.
Sodium
acid sulfate (SAS), which was certified as generally recognized as safe (GRAS) food additive by FDA in 1998, is effective in suppressing enzymatic browning and aerobic bacteria in fresh-cut apples [21], but the effects on potato chips are rarely investigated [22].
Ahem CR, Sullivan LA, McElnea AE (2004) 'Laboratory methods guidelines 2004--acid sulfate soils.' Queensland
Acid Sulfate Soil Technical Manual.