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Information on chemical form of colloidal metals from chapter 7 of the book "Biogeochemistry of Marine Dissolved Organic Matter" is presented. It explores metal associations with organic matter which can be characterized by ligand exchange reactions. It also examines various studies that have found positive correlations between colloidal organic carbon and colloidal metal concentrations.

Information on the measurement of colloid reaction rates from chapter 7 of the book "Biogeochemistry of Marine Dissolved Organic Matter" is presented. It explains the kinetics of colloid-colloid and colloid-particulate interactions of colloidal organic matter in seawater. It also explores the effect of colloid processes on the transport and fate of trace metals.

The summary of Chapter 7 of the book "Biogeochemistry of Marine Dissolved Organic Matter," is presented. It discusses the evolution of colloidal carbon: metal interactions in seawater. It relates the role of the colloid-metal interactions in the generation of colloidal organic carbon (COC). It discusses that some techniques have been developed to isolate marine colloids from soluble constituents.

Information on studies on the metal content of marine colloidal mater from Chapter 7 of the book "Biogeochemistry of Marine Dissolved Organic Matter," is presented. It relates the findings of studies using estuarine and coastal water data regarding the bioactive or nutrient metals that occur in the colloidal phase. Studies have found that a high proportion of dissolved iron is colloidal in many estuarine waters while dissolved zinc is predominantly soluble.

Information on analytical methods for marine colloids research from Chapter 7 of the book "Biogeochemistry of Marine Dissolved Organic Matter," is presented. It focuses on methods used to determine the abundance of marine colloids. It relates how number concentrations of marine colloids in seawater were measured. It describes cross-flow or tangential flow filtration for preconcentrating colloidal matter for bulk chemical analysis.

Information on marine colloids from chapter 7 of the book "Biochemistry of Marine Dissolved Organic Matter" is presented. In 1861, Thomas Graham coined the term "colloid" to describe systems that displayed slow rates of diffusion through porous membranes. By classical definition, heterotrophic and phototrophic bacteria, termed "biocolloids," encompass the marine colloidal phase. An argument has also been raised to base the definition of marine colloids upon the physicochemistry of the intracolloidal matrix rather than a strict physical dimension.

An introduction to chapter 7 of the book "Biochemistry of Marine Dissolved Organic Matter" is presented. It discusses colloidal carbon:metal interactions in seawater. It explains how metal availability strongly influences the abundance and types of phytoplankton that can flourish in a given location. It notes the continuing debate on the immediate fate of colloidal organic carbon phases in ocean waters.

Information on the impact of metal-colloid associations on the availability of bioactive metals to prokaryotic and eukaryotic microbes from Chapter 7 of the book "Biogeochemistry of Marine Dissolved Organic Matter," is presented. It relates that complexation by soluble or colloidal metal chelators lead to a decline in metal availability. It describes ow colloidal processes can retain bioactive metals in solution.

Information on the sources of metal-complexing colloidal ligands from Chapter 7 of the book "Biogeochemistry of Marine Dissolved Organic Matter," is presented. It relates the role of living prokaryotic and eukaryotic phytoplankton, heterotrophic marine bacteria and fungi in releasing copper-complexing organic ligands.

Information on studies on colloidal metal concentrations in seawater from Chapter 7 of the book "Biogeochemistry of Marine Dissolved Organic Matter" is presented. It relates the use of projected relationships with the measured particulate mass present in seawater to obtain a first-order approximation of colloid mass. It outlines the problems with the selection of values for colloid:metal partition coefficients.