Hydride generated AFS determination of trace lead in natural water after sulfhydryl cotton preconcentration
Received date: 2000-10-20
Online published: 2010-10-01
In a pH =5 ～ 6 HAC -NaAC buffer solution , lead in natural water is preconcentrated with sulfhy dryl cotton .The solution of 0 .05 mol/L HCl is used as eluant .The eluation of lead is determinated by HG -AFS in the system of K2Cr2O7 -H2O2 -K3Fe(CN)6 -HCl.The detection limit for lead is 0 .11 μg/ L , and RSD %of 4.40 % and the recovery rate is 98 %～ 104 %.
Key words： sulfhydryl cotton; preconcent ration; hydride generated AFS; lead
YU Tie li, LI Xun, WANG Yan ru . Hydride generated AFS determination of trace lead in natural water after sulfhydryl cotton preconcentration[J]. Industrial Water Treatment, 2001 , 21(6) : 37 -39 . DOI: 10.11894/1005-829x.2001.21(6).37
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