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이온 교환체로서 Quinine-금속thiocyanate착물을 이용한 Quinine의 정량
허문희,백광진,최현영,안문규 경성대학교 1997 論文集 Vol.18 No.1
The fabrication and performance characteristics of quinine sensitive poly(vinyl chloride) membrane electrodes based on the ion-association complex of quinine with an anionic counter ion, metal thiocyanates (Co(SCN)??, Cd(SCN)??, Fe((SCN)??, Hg(SCN)??, Mn(SCN)??, Ni(SCN)??, zn(SCN)??) was described. The sensing membrane was based on the quinine complex of cobalt thiocyanate plasticized with 65.3% (w/w) tris(2-ethylhexyl) phosphate (TEHP), ferric thiocyanate with 65.3% (w/w) TEHP, nickel thiocyanate with 65.3% (w/w) TEHP and zinc thiocyanate with 49% (w/w) TEHP. These electrodes show a linear response down to 1.2×10?, 1.0×10?, 9.6×10?, 2.0×10?M with Nernstian slope of 55.69, 54.96, 56.63, 55.80 mV/dec. for quinine with relative standard deviation of 3.1, .51, 2.26, 3.16% at pH 5.5∼7.6, respectively. Response time was 10∼20s. The quinine-nickel complex with 65.3% (w/w) TEHP was the optimal ion-exchanger for quinine selective electrode. The electrode exhibits good selectivity for the quinine in the presence of some inorganic cation and organic cations. The quinindine-nickel complex instead of quinine-nickel complex as an ion-exchanger was successfully applied to the direct potentiometric determination of quinidine pharmaceutical preparation giving an average recovery of 101.5% and relative standard deviation of 2.5%.
Abuse Potential of Synthetic Cannabinoids: AM-1248, CB-13, and PB-22
( Kwang-hyun Hur ),( Shi-xun Ma ),( Bo-ram Lee ),( Yong-hyun Ko ),( Jee-yeon Seo ),( Hye Won Ryu ),( Hye Jin Kim ),( Seolmin Yoon ),( Yong-sup Lee ),( Seok-yong Lee ),( Choon-gon Jang ) 한국응용약물학회 2021 Biomolecules & Therapeutics(구 응용약물학회지) Vol.29 No.4
Currently, the expanding recreational use of synthetic cannabinoids (SCBs) threatens public health. SCBs produce psychoactive effects similar to those of tetrahydrocannabinol, the main component of cannabis, and additionally induce unexpected pharmacological side effects. SCBs are falsely advertised as legal and safe, but in reality, SCB abuse has been reported to cause acute intoxication and addictive disorders. However, because of the lack of scientific evidence to elucidate their dangerous pharmacological effects, SCBs are weakly regulated and continue to circulate in illegal drug markets. In the present study, the intravenous self-administration (IVSA) paradigm was used to evaluate the abuse potential of three SCBs (AM-1248, CB-13, and PB-22) in rats. All three SCBs maintained IVSA with a large number of infusions and active lever presses, demonstrating their reinforcing effects. The increase of active lever presses was particularly significant during the early IVSA sessions, indicating the reinforcementenhancing effects of the SCBs (AM-1248 and CB-13). The number of inactive lever presses was significantly higher in the SCB groups (AM-1248 and CB-13) than that in the vehicle group, indicating their impulsive effects. In summary, these results demonstrated that SCBs have distinct pharmacological properties and abuse potential.
The Dairy Calves Mortality : the Causes of Death during Ten Yearsin a Large Dairy Farm
Tai Young Hur,Young–,Hun Jung,Seog–,Jin Kang,Chang yong Choe,Ui Hyung Kim,Il Sun Ryu,Dong Soo Son,Kwang Soo Baek,Kwang Seok Ki,Hyun June Lee,Eung Gi Kwon,Guk Hyun Suh,Young Il Cho 대한수의학회 2012 대한수의학회 학술대회발표집 Vol.2012 No.-