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为研究工业环境中镉对人体的危害,迄今为止都以尿中镉含量的多少来诊断其受害程度。然而尿基体复杂多变,严重干扰ppb级镉的测定,所以一直是临床分析工作者所要研究解决的课题。石墨炉原子吸收法测定尿中镉,多采用平台原子化、基体改进剂及表面活性剂等方法。平台原子化和基体改进剂在方便性和数据的稳定性方面都是可取的。氟化铵和硝酸铵作为基体改进剂可使稀释一倍的尿样中尿素、柠檬酸钠、肌酸酐等所产生的
In order to study the harm of cadmium to the human body in the industrial environment, the extent of the damage has been diagnosed to date by the amount of cadmium in the urine. However, the complex and volatile urine matrix, a serious interference ppb level determination of cadmium, it has been the clinical analysis of the workers to study the issue to be solved. Graphite furnace atomic absorption spectrometry for the determination of cadmium in urine, using platform atomization, matrix modifiers and surfactants. Platform atomization and matrix modifiers are desirable both in terms of convenience and data stability. Ammonium fluoride and ammonium nitrate as a matrix modifier can make a double dilution of urine samples of urea, sodium citrate, creatinine, etc.