摘要
本文研究了一种测定硒的新方法，间接石墨炉原子吸收光谱法．该法使Ｓｅ（Ⅳ）与Ｃｄ（ＤＤＴＣ）２置换进而转化为测镉，灵敏度大大提高，特征质量达到０．４０（ｐｇ／１％吸收），理论检出极限为０．０１μｇ／Ｌ，相对标准偏差为４．８％，标准曲线在０．０１～１．０μｇ／Ｌ范围内线性良好，对自来水、头发等样品进行了测定，回收率在９５～１０３％之间。
A new method for the determination of selenium was developed. The method in which Se(IV) replaces Cd of Cd(DDTC)2enables the sensitivity to be enhanced. A characteristic mass of 0.40(pg/ 0.0044A)and a detection limit of 0.01μg/ L were obtained. The RSD was 4.8%. The linearity was good over the range 0.01μg / L～1.0μg / L. The methods were applied to some samples.The recoverie range was 95～103% respectively.
出处
《上海大学学报（自然科学版）》
CAS
CSCD
1996年第4期438-442,共5页
Journal of Shanghai University:Natural Science Edition
关键词
硒
石墨炉
原子吸收光谱法
测定
selenium
cadmuim
graphite furnace atomic absorption spectroscopy
indirect determination
