Micro-particles as interfering substances in colorimetric residual chlorine measurement

21 Chlorine residual efficiency.pmd

1Department of Microbiology; 2Department of Environmental Health, Isfahan University of Medical Sciences, Isfahan, Islamic Republic of Iran (Correspondence to A. Tavakoli: [email protected]). Received: 05/10/03; accepted: 22/03/04 ABSTRACT To investigate the inactivation of potential pathogens, we evaluated survival rates for Escherichia coli, Enterococcus faecalis, Aeromonas hydrophila and Sa...

Application of the sodium diethyldithiocarbamate reaction to the micro-colorimetric determination of copper in organic substances.

WHEN an aqueous solution of sodium diethyldithiocarbamate is added to a solution containing copper the normal copper salt of diethyldithiocarbamic acid, which has a golden-brown colour, is formed. Callan and Henderson [1929], who discovered this reaction, applied their method with satisfactory results to the determination of copper in inorganic substances, but were not concerned with biological...

Analysis of Interfering Substances in the Measurement of Malondialdehyde Content in Plant Leaves

The Thiobarbituric Acid (TBA) reactive substances assay is an easy and quick assay for the assessment in plants of lipid peroxidation, in which Malondialdehyde (MDA) is derivatized. To analyze the applicability of this method, the MDA concentrations in the leaves of different plants were measured by the TBA method. To further separate the interfering substances, fractional extraction and Gas Ch...

Investigation of Bacterial Regrowth and Residual Chlorine in Household Stored Water in Saveh- Iran

Background & Aims of the Study: Saveh city -located in the semi-arid area in Iran- has brackish water and it was forced to use reverse osmosis desalting systems.  Water is not distributed through the distribution network to homes so, people have to buy water from certain places and transfer water through household storage vessel. They have to buy more water and keep it at home for more than 1 w...

Low Density Lipoprotein Particles as Carriers for Bioactive Hormonal Substances