But the environmental significance of these processes is still unknown, Jafvert says, because naturally-occurring materials called humic acids also generate ROS in water.    From Wordnik.com.  [Chemical & Engineering News: Latest News] Reference

Some streams are saturated with humic acids and show black coloration.    From Wordnik.com.  [Discovery Coast Atlantic Forest Reserves, Brazil] Reference

•Surface water is acidic, low in hardness, and high in humic compounds.    From Wordnik.com.  [Ecoregions of New Jersey (EPA)] Reference

Soils with a high humic content correspond best to the requirements of the yam.    From Wordnik.com.  [4 Yams] Reference

In such soils humic acids are present and the requisite alkalinity is thus awanting.    From Wordnik.com.  [Manures and the principles of manuring] Reference

The soils are mainly humic red loams, moderately to highly acidic and deficient in bases.    From Wordnik.com.  [Bwindi Impenetrable National Park, Uganda] Reference

We are well aware that the nitrogen present in the humic matter of the soil is readily nitrifiable.    From Wordnik.com.  [Manures and the principles of manuring] Reference

Chapman and White examined a soil profile from Mount Mulanje and classified the soils as humic ferrisols.    From Wordnik.com.  [South Malawi montane forest-grassland mosaic] Reference

The residues, which are insoluble in water, but redissolve in ammonia, have the properties of humic acids.    From Wordnik.com.  [Researches on Cellulose 1895-1900] Reference

Organic forms of carbon in the lithosphere include litter, organic matter, and humic substances found in soils.    From Wordnik.com.  [Carbon cycle] Reference

Kincaid stuck his head in the door and was rewarded with a rich, humic smell so strong it caught in his throat.    From Wordnik.com.  [All Shall Be Well] Reference

The product consists of a mix of humic acids, algae extracts, a non-hormonal reductant plant metabolite, and vitamins.    From Wordnik.com.  [1. Soil constraints on sustainable plant production in the tropics.] Reference

Substances damaging to cement, such as salts, sugar-containing and humic substances, acids, gypsum, and soft rain water, reduce the quality.    From Wordnik.com.  [1. Technical requirements for Asbestos substitutes] Reference

One is, however, justified in assuming that both the natural tannins and the related humic acids are ester-derivatives of hydroxybenzoic acids.    From Wordnik.com.  [Synthetic Tannins] Reference

Mulder, it is composed of a number of organic bodies, and he has identified the following substances -- ulmin, humin, ulmic, humic, geic acids, &c.    From Wordnik.com.  [Manures and the principles of manuring] Reference

It is mostly found in sandy soils along creeks and rivers but grows well in colluvial soils, humic brown-clay soils, and alluvial and meadow soils.    From Wordnik.com.  [6. Best-Known Species] Reference

Like all other forms of organic fertilizing, digested slurry increases the humic content of the soil, and that is especially important in low-humus tropical soils.    From Wordnik.com.  [3. The agricultural setting] Reference

Sugar-containing and humic substances are much more dangerous than salts, since even in low concentrations they have a negative impact on the hardening of the binder.    From Wordnik.com.  [1. Technical requirements for Asbestos substitutes] Reference

It is highly probable that a certain quantity of potash in the soil may exist in combination with humic and ulmic acids, forming insoluble potassium humates and ulmates.    From Wordnik.com.  [Manures and the principles of manuring] Reference

We use only the purest water to make our humic and fulvic products.    From Wordnik.com.  [Wil's Ebay E-Store] Reference

The humic used in our products is highly bio-active and is 100% organic.    From Wordnik.com.  [Wil's Ebay E-Store] Reference

Finally, humic acids and soil fungi promote soil fertility and plant growth.    From Wordnik.com. Reference

The humic mineral solution delivers the zeolite directly to the intracellular fluid.    From Wordnik.com.  [Wil's Ebay E-Store] Reference

Extensive research into the bio-medical uses of humic has been conducted in China, Russia.    From Wordnik.com.  [Wil's Ebay E-Store] Reference