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백남호 대한약학회 1982 약학회지 Vol.26 No.3
천연물 약품의 품질 관리에 대한 심포지움의 결론의 글로 서울대학교 약학대학의 백남호 교수가 쓴 글이다.
白南豪 숙명여자대학교 1970 藥硏 Vol.6 No.-
임상화학 분석에서는 동일 환자의 동일 종목이 반복 검사되고 Data의 소장으로 임상적 평가가 되어진다. 그러므로 그때 항상 동일 재현성으로 측정되어지고 있는가가 중요하다. 그러므로 매일 정밀도 관리가 절대 필요하다. 또 Computer로도 관리되고 있다. 또 각 병원 내의 측정척이 다르면 재현성은 양호하다 할지라도 상호 Data의 비교나 연구 논문의 평가도 곤란하므로 미국의 병리학회서는 매년 1,000개의 병원에 동일 혈청을 배포하고 Survey하고 있는데 1965년의 성적이 발표되었다. 기기면으로는 역시 분석의 자동화가 초점이고 같은 일이 매일 반복되는 임상검사에서는 당연한 일이다. Autoanalyzer는 세계 각국에서 급속히 보급되고 있고 일본만 해도, 1,000대가 넘는다고 한다. 기기의 발전은 임상 검사의 이상인 신속, 정확, 동시다종목측정이 되어져가고 있고 그리고 소형인 자동분석기 등이 기대되고 있다.
白南豪 서울대학교 1965 서울대학교 論文集 Vol.16 No.-
To the samples of mercuric chloride and ammoniated mercury, we add quantitatively certain excess of KI solution for solution of them. Here, when the sample is HgI_2, we can make a back titration with 0.1 M HgCl_2 solution till the feeble red color of HgCl_2 is appeared; and when the sample is HgNH_2Cl, we neutralize it, till it becomes colourless, with about 0.1 N HCl solution, using phenolphthalein as the indicator. After the neutralization, a back titration can be also performed with 0.1 N HgCl_2 solution. When a blank test is carried on of KI solution of same concentration and same volume, the quantitative analysis can easily be made with good accuracy, on the basis of the findings of the back titration and blank test.
요오드水銀錯鹽 K_2HgI_4 에 依한 PIPERAZINE 錯化合物의 組成 및 그 應用에 關한 硏究
白南豪 서울대학교 1965 서울대학교 論文集 Vol.16 No.-
On examining the composition of the insoluble precipitate produced in the piperazine alkaline aqueous solution, to which the K_2HgI_4 was added, we have found that, if the K_2HgI_4 is insufficiently added, the mole ratio of piperazine and HgI_2 in the precipitated product is only 1: 1, but if it is excessive the ratio is both 1 : 1 and 1 : 2. When alkaline aqueous piperazine solution and etherial HgI_2 solution were shaked together, the mole ratio of the product was found 1 : 1. Measuring the solubility of piperazine-HgI_2 equipped with the mole ratio of 1 : 1 in the KI solution, we have found apparent formation constant 1.1×10 exp (31.83), about 100 times that of K_2HgI_4. For the purpose of making a direct piperazine quantitative analysis, without eliminating the water from the piperazine solution sample, an excessive quantity of K_2HgI_4 was added to the alkaline aqueous solution of the sample only to get the first precipitate, and when, after the filtrate had been acidified, it was added to with HgCl_2, then the KI which was produced on the first precipitate changes into K_2HgI_4. Alkalizing the above-mentioned solution again, we can see the piperazine-HgI_2 precipitate, which was not completely done in the previous process; thereupon, when both the precipitates are gathered and solved in a concentrated KI solution, the piperazine is isolated; and by titrating the piperazine with 1 NHCl solution, we could make the quantitative analysis of piperazine to good accuaracy. 1. In consequence of considering the condition of formation of piperazine-HgI_2 it has been found that, when the K_2HgI_4 is insufficiently added to the piperazine, the mole ratio of the piperazine and HgI_2 of the product is 1 : 1. 2. If the K_2HgI_4 is excessively added to, the mole ratio of piperazine and HgI_2 results in the mixed product of both 1 : 1 and 1 : 2. 3. When the mixture of alkaline piperazine solution and etherial HgI_2 solution is shaked well, a product, whose mole ratio of piperazine and HgI_2 is 1 : 1, can be