A simple flow injection spectrophotometric method for the determination of nitrite is described. Nitrite injected into the flow system reacts with thiourea in acidic medium and the generated thiocyanate ion reacts with Fe(III) in the reagent solution to produce a highly colored product. The influences of chemical and physical parameters including reagent concentrations, sample volume injected, ...

In the title compound, [Cu(NO(2))(2)(C(5)H(8)N(2))]·2H(2)O, the Cu(2+) ion exhibits site symmetry 2 and is hexacoordinated by four O atoms from two nitrite ions and two N atoms from two 2-ethyl-1H-imidazole mol-ecules. A free water mol-ecule assists in forming a three-dimensional network holding together the complexes via O-H⋯N, O-H⋯O and N-H⋯O hydrogen bonds.

The present work aims to study the level of fluoride in bore well, hand pump water samples of different villages of Mullana block, District Ambala, state Haryana & also to analyzed other water qualities parameters like pH, sulphate ions, chloride ions, total hardness, nitrite ions, methyl orange alkalinity, fluoride ion, iron, copper and cadmium. The analysis showed a minimum fluoride level of ...

A rapid differential pulse adsorptive stripping voltammetric method has been developed for the ultra-trace determination of chromium using 2,2'-bipyridine. The base electrolyte used is 0.1 M NH4Cl (pH 6.0). The peak current was found to increase substantially with the addition of nitrite ions. A well-defined peak was observed at -1.3 V. Parameters, like concentration of the ligand, concentratio...

Acetate was incorporated by Chlorella pyrenoidosa into nonvolatile water-soluble compounds (amino acids, organic acids and carbohydrates) with pH optimum between 4 and 5. Incorporation into lipid was maximal at pH 7.5. The proportion of incorporated acetate in lipid was not significantly affected by acetate concentration and chlorophyll concentration in the ranges tested. Illumination of Chlore...

The use of nonthermal air plasma is rapidly becoming a novel technology as an alternative source nitrites in the meat industry. As egg white versatile and cost-effective ingredient commonly used to improve texture products, effect its addition after treatment (PTEW) on yield, pH, residual nitrite, nitrosyl hemochrome, TBARS, color, parameters, aroma profile pork liver pâtés was studied. nitrite...