trace enrichment
4.AAS DETERMINATION OF TRACE LEAD,CADMIUM,COPPER AND NICKEL BY ENRICHMENT WITH 2 MERCAPTOBENZIMIDAZOLE CHELATING CELLULOSE
5.As yet, study on trace elements is concentrated on such areas as enrichment, distribution and transformation principle, as well as sampling devices and control techniques.
6.Determination of Trace Pb in Salt and Water Samples by Flame AAS after Enrichment with Xanthate Cotton
7.Determination of Trace Amounts of Mercury in Natural Waters——Flameless Atomic Absorption Method with Electrolytic Enrichment
8.Determination of Trace Amounts of Gold and Silver in Rock Minerals by Platform Graphite Furnace AAS after Enrichment with Esteramine Foam
9.The REE and trace element distribution patterns of Tayuan meta-gabbro show enrichment of LREE and incompatible elements, whic h is similar to the character of basalt in Azores platform as the modern E-typ e of enriched mantle. The deficiency of Nb and Ta, however,suggests its island- arc background.
10.A method of ultra-trace measurement of 2-FBA in oilfield brine is established using SPE enrichment & separation solid-phase in combination with gas chromatography- mass spectrometry (GC/MS).
