[The identification of barbituric acid derivatives in the old blood stains on textiles]. / Issledovanie proizvodnykh barbiturovoi kisloty v zastarelykh piatnakh krovi na tkaniakh.

Thus article was designed to report a few cases of the identification of barbituric acid derivatives in the old blood stains on the clothes and other textiles. The data presented give evidence that barbiturates are capable of persisting in dry blood stains during rather a long period. The authors emphasize the necessity of mandatory control investigations to avoid obtaining the false positive results.

[Peculiarities of chemico-toxicological analysis of biological material aimed to detection of narcotic and psychoactive substances misuse by servicemen].

The authors give an approval of military personnel biosphere research, which is necessary for prevention and early detection of substance misuse among military personnel of the Armed Forces. The article provides documents, regulating procedure of the chemico-toxicological analysis of a biological material, and staging of early detection of substance misuse among conscripts and professional soldiers. The authors gave information about main current problems of this activity, revealed its disadvantages and detected prevention measures.

[Falsified dietary food supplements for men: expertise difficulties and medical problems].

Falsified dietary food supplements for men: expertise difficulties and medical problems. According to numerous chemical-toxicological and forensic researches it have been sildenafil and tadalafil in a variety of dietary food supplements. Falsified dietary food supplements, are essentially a substitute for drugs - phosphodiesterase type 5 inhibitor, but are produced with unknown composition and in unknown dose of synthetic pharmaceutical substances. This can cause consumers unpredictable nezative conseauences. including death.

[Methods for studying eugenol].

A steady tendency toward the extensive use of phytogenous medicinal products well apparent in the recent years involves dental materials. Over one third of the dentistry products contain eugenol, the main component of the clove essential oil. This study is focused on the development of a method for the detection and quantitative measurement ofeugenol in a variety of stomatological products, includling filling materials, and other preparations. The samples for analysis were prepared taking into account physical and chemical properties of the substance of interest, such as high partial pressure over the liquid phase. We investigated the equilibrium vapour phase by capillary gas chromatography with the use of a mass-spectral detector. A method for the detection and quantitative assay of eugenol in dental materials and-filling agents was developed. Its sensitivity limit is 10 ng/ml for liquid samples and 25 mcg/g for solid ones. Metrologic characteristics of the method make it suitable for the detection of eugenol in dental fillings after their long-term contact with biological tissues.