acid precipitation

Acid precipitation leading to acidification of the water is thought to be behind their decline.

As for the frequency of acid precipitation (Figure 2(b)), there were 46.9% of precipitation with the pH lower than 5.6.

Sulfonation, nitration, neutralization, reduction, alkaline dissolving, and acid precipitation are a series of a chemical process involved in the manufacturing of H acid [1, 2].

(11,12) HDL cholesterol (HDL-C) was estimated by phosphotungstic acid precipitation followed by enzymatic analysis in supernatant fraction (13) and LDL-cholesterol was determined by using Friedwald's equation.

Insulin resistance, which is seen in association with both diabetes and the metabolic syndrome, leads to defective ammoniagenesis, which results in low urine ammonium and pH.[sup.3] This may manifest as uric acid precipitation, pure uric acid formation and mixed uric acid/calcium oxalate stones.

And while we've seen a lot of negative impacts due to acid precipitation from die-offs of large numbers of trees to sensitive fish species like the brook trout disappearing from affected waters--there's been much improvement in recent years.

Addition of moderate concentrations of ethanol or isopropanol interferes with this, causing nucleic acid precipitation while many chemical inhibitory substances remain soluble.

Placet and Streets, 1987 Placet, M., Streets, D.B., Ferst interim assessment, National acid precipitation assessment programme, 722, Jackson Place, NW, Washington DC, 1987.

Acid precipitation threats have been reduced, head exposure is a fraction of what it once was.

Volatilization of ammonia causes acid deposition, which contributes to acid precipitation [11, 12].