phosphorus

In this paper,the relation of heterotrophic bacteria to nitrogen and phosphorus in marine environment is studied by adding nitrogen and phosphorus to the seawater in mesocosm.

Conclusions Phosphorus pentasulfide could cause damages to eyes of...

Now, supernutrition is the first problem in Dianchi, and the environment of the lake deteriorate gradually for more total phosphorus and total nitrogen was input.

The results show that the phosphorus partition ratio of the slagsteel increases with the increase of oxidability,basicity of slag.

Four new triazol organic phosphorus compounds with the general formula(I) have been prepared.

Phosphorus eutectic and carbon compound with boracium were found in the structure of rubbing-pair material when reasonable amounts of the elements of phosphorus and boracium were added.

main products include anisole & derivateves,phosphorus oxychloride,phosphorus trichloride,sulfur chloride,chloroacetyl chloride,phenetole,etc.

2. Tri(2,4,6-tribromophenyl) phosphite was synthesized with phenol, brome and phosphorus trichloride in the presence of pyridine.

Hexahydroxy N-containing heterocyclic compound without sulfur and phosphorus was synthesized and its structure was characterized.

The water eutrophication is caused by the incessant accumulation of nitrogen and phosphorus in water and excessive propagation of a few of algal and hydrobios.

Surface water is generally coloured and turbid.When total phosphorus is analyzed by luminometer, the monitoring result will be somewhat high.

Synthesis of polyethenoxyether phosphate using polyethenoxyether as initiator and using phosphorus pentoxide as parkerizing reagent, and its application were studied.

On the basis of acetone-phosphomolybdate method to detect phosphorus, the microplate method was developed for the determination of activity units of phytase.

The optimized conditions for phosphorus recovery as hydroxyapatite from wastewater by synthetic tobermorite through seeded crystallization were studied in this paper.

The biodegradability of tapioca starch cross linked with phosphorus oxychloride was studied according to the half-vivo model by using micropopulation symbiotic cocultures.

The paper is a study of the rheologic character of phosphate di-starch which is using sodium trimetaphosphate and phosphorus oxycholride as crosslinking agent by rotating viscometer.

- Planting some aquaplants such as aloe and eelgrass in the built marsh land and use its denitrification and phosphorus removal function to strengthen the purifying of Suzhou river water by its.

the main products include chloride alkaline,phosphorus puoducts,organic intermediates,pesticide,aromatizer,hromine products of six series in more than ten varieties.