The paper presents the layout, the technological steps and the measurement results for an interdigital integrated capacitor used for gases detection. Silicon micromachining technology is applied for manufacturing the sensor substrate. The sensitive layer used is phthalocyanine (Pc) deposed by EDL (evaporated dyes layers technique). Many solutions were found as phthalocyanine derivatives deposition technique. Considering the different sensitivities

The paper presents the manufacturing and testing of resistive integrated microsensors, using as sensitive and conductive layer copper and zinc phthalocyanines, used for the detection of NO2 and NOx in polluted atmosphere, at room temperature. The measurement of the phthalocyanine chromogene layers deposited by vacuum sublimation on electrodes showed, generally, high values of the measured resistance which decreases significantly in the presence of

The in vitro release of trichlorphon (TCP) from acidic solutions was studied using a static diffusion cell battery, through cellulose membranes. The amount of toxic released compound decreases in the following order: cellophane (83%), cuprophan (78%) and cellulose acetate (74%). There was also studied the influence of adsorptive powders upon the decreasing amount of the released compound. We observed that the powder mixture cellulose acetate: bentonite

Aim of the study. Development and validation of a sensitive, reproducible HPLC quantitative method for determination of diltiazem and desacetyldiltiazem in human plasma. Material and method. After extraction from plasma with tert-butyl methyl ether and back-extraction into 0.025N phosphoric acid, analytes were measured by reversed-phase HPLC on a C18 column at 235 nm. The separation was performed on a Ascentis C18 (150*2,1 mm), at 0.3 mL/min flow

Aim of the study. Development of an HPLC method for quantification of triclorfon in vitro released from acidic solution after static diffusion through cellulose membranes. Material and method. A reversed-phase mechanism with DAD detection was used to determine the amount of toxic compound released. Results. The proposed HPLC method uses a reverse-phase mechanism, a Michrosorb C18 (150x4.6mm) column, isocratic elution, 40°C column temperature. The