Chelating flotation reagents represent the developing direction of modern flotation reagents,because of their remarkable flotation properties.

The paper presents some coal flotation used reagents such as collector,frother,compound flotation reagent and regulator etc,used both at home and abroad.

Description is given, in the paper , of a novel high performance compound flotation reagent which is suitable for flotation separation of coarse size anthracitic coal with high density and low flotation activity.

The potential of biodegradable chelate EDDS for phytoextraction of heavy metals from contaminated soils;

Progress on monoclonal antibody directed toward metal-chelate complexes and immunoassays to assess heavy metal contamination;

A new bifunctional chelate intermediate of time-resolved fluorescence immunoassay 2,6-bis(3′-bromomethyl-pyrazol-1′-yl)-4-bromopyridine was prepared from 2,6-bis(3′-methyl-1H-pyrazol-1′-yl)-4-aminopyridine by diazotization-Sandmeyer reaction and NBS reaction.

Application of chelator in strontium titanate as lean-burning oxygen sensors;

Removal of Cd and Cr from municipal sludge by complexing of chelators and surfactants;

Synthesis of a New Chelator──[15]ane·N_5·5HCl and Study of Its Corrosion-inhibitive Ability;

New synthetical methods of chelating agent and application in chemistry and chemistry industry;

Utilization of cationic starch chelating agent in chromium residue removal;

Application of the macromolecule-chelating agent to the treatment of heavy metal wastewater;