[Indirect determination of trace mercury ion by flame AAS].
In this paper, the method of indirect analysis of trace Hg2+ has been researched. In the HAc-NaAc buffer solution (pH = 5.0), copper can enrich and displace Hg2+ in solution of sample. The calibration curve of Hg2+ and Cu2+ is linear within in the range of 0-0.4 microgram.mL-1 of Hg2+. The trace mercury ion can be indirect determined by FAAS without separation. The recovery is 90%-110%, and the RSD is 3.5%. The method has been used for determining the trace Hg2+ in human hair with satisfactory results. The Hg2+ in solution is determined without any interference of common ions. Thus the method selection is excellent.
Zhang
Lin-lin
LL
Dept. of Light and Chem. Eng., Guangzhou University, Guangzhou 510091, China.
Zhou
Yong-qiang
YQ
Lin
Hua-jie
HJ
Li
Jun
J
Zhou
Yan
Y
D006197:Hair / Q000737:chemistry; D006801:Humans; D008628:Mercury / Q000032:analysis*; D012680:Sensitivity and Specificity; D013054:Spectrophotometry, Atomic / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis*
D014874:Water Pollutants, Chemical; D008628:Mercury