ULTRA-MICRO DETERMINATION OF ALKYLMERCURY COMPOUNDS BY GASCHROMATOGRAPHY

Quantitative determination of carbon monoxide in blood by gaschromatography.

The gaschromatographic determination of CO in blood has been simplified by using carbon molecular sieve columns for separation of gases. Regeneration of the columns is necessary only after 1000 and more analyses. Moreover, a more simple procedure for evaluating the CO concentration was developed. This procedure is suitable for routine determination in the sensitivity range of 0.2—100 % COHb in ...

determination of alkylmercury compounds and phenylmercury in water and sediments by g.c.employing mocified westoo method

method previously employed by westoo for the determination of alkylmercury compounds was producing very wide picks during g.c. analyses. changing the column temperature, carrier gas flow and pressure did not supersede the problem. therefore change in packing materials was experienced. 5% dc-200 on gas-chrom did not work. a packing material used for chlorinated hydrocarbons w, 80-100 mesh. as th...

Determination of Phenolic Compounds in Pinus eldarica by HPLC

Background: The antioxidant components have been identified in some pine species. Antioxidant properties of proantocyanidins reduce free radicals induced by DNA fragmentation and lipid proxidation and also proanthocyanidines could curb lipid peroxidation. Objective: In this study, we analyzed different parts of Pinus eldarica (bark, seed and needle) and assessed their antioxidant contents. ...

Determination of ultra trace of thiosemicarbazide by adsorptive stripping voltammetric method

In the present work, an adsorptive stripping voltammetric method using a hanging mercurydrop electrode (HMDE) was described in order to determine the ultra trace of thiosemicarbazidein different real samples. The method is based on accumulation of thiosemicarbazide on mercuryelectrode. The potential was scanned to the negative direction and the differential pulse strippingvoltammograms were rec...

Ultra Micro Gas Turbines