the aim of this trial was to determine the toxic effect of oms-43 on spraymen and inhabitants. the spraying operation lasted for 30 successive days, and two teams consisting of 20 spraymen, 2 mixers, 4 foremen and team leaders were engaged in this operation. the operators were under systematic and closed clinical observation and cholinesterase determination (tintometric method) during the opera...

a simple, rapid and sensitive method has been developed for determination of traces of tellurium (iv) (7.0-120.0 ng/ml) based on it’s catalytic effect on the reduction reaction of lauth’s violet by sulfide ion at ph 4.2. the reaction is monitored spectrophotometrically by measuring the decrease in absorbance of lauth’s viole at 600 nm by the fixed time method. the detection limit is 5.0 ng/ml a...

We report the synthesis of a unique cubic metal–organic framework (MOF), Fe-HHTP-MOF, comprising hexahydroxytriphenylene (HHTP) supertetrahedral units and FeIII ions, arranged in diamond topology. The MOF is synthesized under solvothermal conditions, yielding highly crystalline, deep black powder, with crystallites 300–500 nm size tetrahedral morphology. Nitrogen sorption analysis indicates por...