The asymmetric unit of the title compound, (C(6)H(4)S(4))(8)[Mo(6)O(19)](2)·CH(3)CN, contains two halves of two centrosymmetric [Mo(6)O(19)](2-) hexa-molybdate anions, which are each built up from six distorted MoO(6) octa-hedra sharing common edges and one common vertex at the central O atom, six tetra-thia-fulvalene cations (three of which are located on mirror planes) to balance the charge a...

One of the commonly used methods for the calorimetric determination of phosphorus is based upon the reduction of molybdic acid to molybdenum blue and subsequent estimation of the intensity of the blue color formed.. An excellent discussion of the molybdenum blue reaction and its limitations is given by Woods and Mellon (1). In using this reaction over a period of years the authors have been inc...

The evaluation of the Kjeldahl digestion method was investigated by comparing measured values of total nitrogen, phosphorus and potassium using three salt and catalyst mixture in Standard Kjeldahl digestion method and Salicylic acid Modification method with certified values of plant material as well as comparison was made for determination of total nitrogen from steam distillation method verses...

The increased rate of hydrolysis of organic phosphate compounds in the presence of molybdate has been observed frequently and is the basis for the estimation of phosphocreatine (1) and acetyl phosphate (2) in tissue extracts. A study was undertaken to determine whether this was a general effect and, if so, to elucidate the mechanism. While these experiments were in progress, Weil-Malherbe and G...

A simple and rapid method has been developed for the determination of ascorbic acid in fruit and pharmaceutical products. The method is based on the measurement of the reaction rate between ammonium molybdate and ascorbic acid in acidic media. The reaction was monitored spectrophotometrically at 800 nm by fixed-time and variable-time methods. The calibration graph was linear in the range of...

The effects of vanadate, molybdate, and azide on ATP phosphohydrolase (ATPase) and acid phosphatase activities of plasma membrane, mitochondrial, and soluble supernatant fractions from corn (Zea mays L. WF9 x MO17) roots were investigated. Azide (0.1-10 millimolar) was a selective inhibitor of pH 9.0-ATPase activity of the mitochondrial fraction, while molybdate (0.01-1.0 millimolar) was a rela...

1. [35S]sulphate was used to measure the apparent turnover of sulphate, sulphide and microbial-protein-S in the rumen contents of four sheep that were intraruminally infused with 10 g sodium sulphate/d alone, or together with 126 mg sodium molybdate (50 mg molybdenum). 2. Infusion of molybdate increased the concentration of sulphate in rumen fluid from 2.2 to 7.2 mug S/ml and decreased the rate...

The progress of molecular genetics has enabled us to identify the genes responsible for congenital heart malformations. However, recent studies suggest that congenital heart diseases are induced not only by mutations in certain genes, but also by abnormal maternal factors. A high concentration of maternal retinoic acid (RA), the active derivative of vitamin A, is well known as a teratogenic age...

In this study, the effect of molybdate on the electrochemical behavior and semi-conductive properties of duplex stainless steel 2205 passive film at NaCl solutions was investigated. Cyclic potentiodynamic polarization, impedance spectroscopy, mott-schottky plots and scanning electron microscopy (SEM) were used to study the passive behavior. Polarization curves showed that the corrosion current ...

An organism identified as Pseudomonas putida was isolated from an enrichment culture with 2-furoic acid as its sole source of carbon and energy. The organism contained a 2-furoyl-coenzyme A (CoA) synthetase to form 2-furoyl-CoA and a 2-furoyl-CoA dehydrogenase to form 5-hydroxy-2-furoyl-CoA as the first two enzymes involved in the degradation. Tungstate, the specific antagonist of molybdate, de...