Determination of Anions in Natural and Treated Waters

Crompton, T. R.

doi:10.4324/9780203303238

Cited by 24 publications

(15 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recent reports describe the contamination of soil (Cherian, Gupta 1990;Nriagu 1995;Aydinalp et al 2010;Nicholson et al 2010), water (Cherian, Gupta 1990;Nriagu 1995;Crompton 2002), air (Cherian, Gupta 1990) and plants (Aikpokpodion et al 2010) with heavy metals. The Cu and Hg concentrations of pond water that were higher than permissible or tolerable limits imply heavy metal accumulation in the aquatic environment.…”

Section: Discussionmentioning

confidence: 99%

The corollary effect of heavy metal accumulation in freshwater ponds on the hematological profile of Nile Tilapia (Oreochromis niloticus)

Garcia¹,

Jean²,

Miguel³

et al. 2016

EEB

View full text Add to dashboard Cite

The status of heavy metal buildup in commercial and non-commercial ponds of Nile tilapia (Oreochromis niloticus) and its effect on fish health was evaluated. Pond water and tilapia meat were examined for Pb, As, cadmium Cd and Cu using flame atomic absorption spectrometry; and Hg through manual cold-vapor atomic absorption spectrometry. Standard methods in hematology were applied to estimate red and white blood cell function of fish in relation to heavy metal accumulation. The results revealed significantly higher Cu content in pond water of a commercial farm compared to the Cu content of water from a non-commercial farm, while similar levels of Hg and Pb were recorded. Tilapia meat from commercial ponds had significantly higher Pb and lower levels of Cu compared to meat from a non-commercial farm. Similar levels of Hg were observed in tilapia meat obtained from farms while tilapia meat from non-commercial ponds had significantly higher Cu. Neither As nor Cd were detected in the farms. Hematological evaluation revealed comparable counts of total red blood cell. Red blood cell indices such as hematocrit and mean corpuscular volume were significantly higher in tilapia from the commercial ponds. The amount of hemoglobin per red blood cell was smilar in tilapia from the farms while mean corpuscular hemoglobin concentration was significantly higher in tilapia from the non-commercial farm. Total white blood cell and eosinophil counts of tilapia were similar in the farms. Tilapia from the commercial ponds had significantly high neutrophil and monocyte counts while tilapia from the non-commercial ponds had significantly high lymphocyte counts. The hematological evaluation indicate relationship of cellular components of fish blood and heavy metal accretion from the aquatic environment by Nile tilapia.

show abstract

Section: Discussionmentioning

confidence: 99%

The corollary effect of heavy metal accumulation in freshwater ponds on the hematological profile of Nile Tilapia (Oreochromis niloticus)

Garcia¹,

Jean²,

Miguel³

et al. 2016

EEB

View full text Add to dashboard Cite

show abstract

“…nitrite, play vital roles in the environment, industry and biology [1]. Some of these common anions are essential for our life [2,3].…”

Section: Introductionmentioning

confidence: 99%

Colorimetric sensing of anions in water using ratiometric indicator-displacement assay

Feng

et al. 2012

Analytica Chimica Acta

View full text Add to dashboard Cite

“…Closely related to this structure is that of the polymerization catalyst Zn(OMe) 2 (EtZnOMe) 6 (5). The complex is centrosymmetric and consists of two enantiomorphic cubes sharing a corner at which a zinc atom is situated; the zincs occupy the corners of a tetrahedron and the oxygens the corners of an interpenetrating, but smaller, tetrahedron.…”

mentioning

confidence: 99%

“…In the anhydrous salt, the zinc is in a distorted tetrahedral environment with bridging acetate groups. Distillation of zinc acetate gives a crystalline basic acetate [Zn 4 O(OCOMe) 6 ], the structure of which (1) is analogous to that of basic beryllium acetate. The two compounds are isomorphous; in each the metal is coordinated by four oxygens, three from bridging acetate groups and the fourth lying at the center of the tetrahedron of zinc ions.…”

mentioning

confidence: 99%

“…The two compounds differ in that the zinc complex is hydrolyzed rapidly in water. Absorption and emission spectra of [Zn 4 O(OCOMe) 6 ] have been investigated 80 as well as the X-ray PES (Photoelectron Spectroscopy), and a theoretical treatment shows how well this complex throws light on the electronic structure of zinc oxide itself. 6 ] with R = for example, Et, or n-Pr, or NEt 2 are known.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Zinc: Inorganic & Coordination ChemistryBased in part on the article Zinc: Inorganic & Coordination Chemistry by Reg H. Prince which appeared in theEncyclopedia of Inorganic Chemistry, First Edition.

Burgess

Prince

2005

Encyclopedia of Inorganic Chemistry

View full text Add to dashboard Cite

Alloys and salts of zinc have been known for many centuries; commercial production of the metal dates from early in the eighteenth century. Of the several million tons now produced annually, by electrolytic and smelting processes, much is used in alloys, in batteries, in corrosion prevention, and in the manufacture of a range of compounds with various uses. In particular, zinc oxide and zinc chloride have a large number of uses, detailed in this article. Zinc sulfide is both one of the main zinc ores and the archetype for the two main structural forms of 4:4‐coordinated structures (zinc blende and wurtzite). Many zinc compounds and complexes have interesting structural, spectroscopic, optical, magnetic, and conductivity properties, some of which are of actual or potential value in technical and industrial applications. Zinc‐containing species have also proved valuable in synthesis and self‐assembly of a range of supramolecular structures. Both in the solid state and in solution zinc exhibits a range of coordination numbers, though tetrahedral and, especially in solution, octahedral stereochemistries dominate. Zinc forms a variety of complexes, especially with nitrogen, oxygen, sulfur, and halide donor ligands. Many of these complexes show high stability, but they are generally labile in solution. Zinc plays an essential role in biology, being a key constituent of at least 200 metalloproteins. It is an essential element in human nutrition, but toxic in large quantities. Many zinc complexes have been synthesized as biochemical models; a few zinc salts are used in dietary supplements.

show abstract

Determination of Anions in Natural and Treated Waters

Cited by 24 publications

References 0 publications

The corollary effect of heavy metal accumulation in freshwater ponds on the hematological profile of Nile Tilapia (Oreochromis niloticus)

The corollary effect of heavy metal accumulation in freshwater ponds on the hematological profile of Nile Tilapia (Oreochromis niloticus)

Colorimetric sensing of anions in water using ratiometric indicator-displacement assay

Zinc: Inorganic & Coordination ChemistryBased in part on the article Zinc: Inorganic & Coordination Chemistry by Reg H. Prince which appeared in theEncyclopedia of Inorganic Chemistry, First Edition.

Contact Info

Product

Resources

About