摘要
本文对用于原子吸收光谱分析的在线液－液萃取流路系统进行了研究，采用了一种新型、适用、简便的相分隔器和相分离器，并用该流路系统对矿石、人发中的Ｃｕ（ＦＡＡＳ）以及矿石中痕量Ａｕ进行了测定（ＧＦＡＡＳ）。在水相和有机相的流量比为２５：１，采样频率为２０ｈ￣（－１）时，用ＦＡＡＳ法测定Ｃｕ的ＲＳＤ为１．９％（ｎ＝１０）、ＤＬ（３σ）为１．０μｇ．Ｌ￣（－１）；用ＧＦＡＡＳ法测定Ａｕ的ＲＳＤ为４．９％，ｎ＝１０、ＤＬ（３σ）为０．０８μｇ．Ｌ￣（－１） 。
An on-line continuous extraction system using acommon trisection connector has been developed.Thenewly designed phase separator is robust and has along term stability in comparison with the commonlyused membrane separator.The system was;connectedon-line with FAAS and GFAAS.The performance ofthe system was studied with respect to determiningcopper(FAAS)and gold(GFAAS).The detection lim-its were 1.0μg/L for copper and 0.08μg/L for gold,and the relative standard deviations were1.8%and4.9%respectively,The analytical results for standardsamples were in good agreement with certified values。
出处
《分析试验室》
CAS
CSCD
北大核心
1994年第3期73-76,共4页
Chinese Journal of Analysis Laboratory
关键词
萃取
AAS
FIA
测定
金
铜
On-line flow extraction system
atom-ic absorption spectrometry
gravitational phase sepa-rator
gold and copper determination
