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放射性高锝酸钠(99~mTc)注射液中微量铝的测定,国际卫生组织推荐用依铬氰R比色法,我国卫生部颁布的放射性药品的暂行规格标准推荐用铝试剂比色法。此二试剂测铝的标准曲线的线性关系都不大好,实验条件要求也较苛刻,而常规分析要求方法简便可靠,显然,此二方法不够理想。有人比较了铝试剂、茜素红S,依铬氰R,铬天菁S、(口底)唑、偶氮胂、邻苯二酚紫等试剂的优缺点,认为邻苯二酚紫最佳,不仅灵敏,标准曲线的线性也好,并推荐了用它比色测定水中微量铝的程序。他们认为pH6—6.2为适宜酸度,并在加六次甲基四胺缓冲液后10—20分钟内测吸
Radioactive sodium perturbate (99 ~ mTc) injection of trace aluminum determination, the International Health Organization recommended by chromium colorimetry R, the Chinese Ministry of Health promulgated the provisional specifications for radioactive drugs recommended aluminum reagent colorimetric method. The linear relationship between the two reagents for measuring aluminum standard curve is not good, the experimental conditions require more demanding, and routine analysis requires a simple and reliable method, obviously, these two methods are not ideal. Some people compared the advantages and disadvantages of reagents such as aluminum reagent, alizarin red S, chrome cyanide R, chrome cyanide S, (mouth) azole, arsenazo, catechin violet and the like, and it is considered that catechol violet is the best , Not only sensitive, the linearity of the standard curve is also good, and recommend the use of colorimetric determination of trace aluminum in water procedures. They consider pH6-6.2 to be a suitable acidity and measure the absorbance within 10-20 minutes after adding hexamethylenetetramine buffer