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- W2386173681 abstract "In the FAAS determination of trace amounts of cadmium in water sample,on-line preconcentration of Cd~(2+)ion with flow injection knotted reactor was adopted,in which 1-pyrrolidine carbodithioic acid(ammonium salt,abbreviated as APDC)was used as ligand for Cd~(2+),and the mode of duplicate introduction of the APDC solution into the reactor was introduced.The APDC solution was pre-coated on the inner wall of the knotted reactor (KR),i.e.,the 1st introduction of APDC solution;and the 2nd introduction of APDC solution was carried out simultaneously with the introduction of sample solution.Flow-rate of sample solution in the FI-preconcentration was taken as 6.0 mL·min~(-1),and the time for preconcentration was taken as 60 s.Concentration factor of Cd~(2+)by this method attained to a value of 21,which is higher than the values 9 and 16 attained by either the mode of pre-coating on the inner wall of KR or the mode of introduction simultaneously with the sample solution separately.Detection limit(S/N=3)of the method found was 0.32μg·L~(-1),and the sampling frequency of 36 samples per hour was achieved.Precision was tested at the concentration level of 20μg·L~(-1)of Cd~(2+),value of RSD(n=11)obtained was 2.7%.In analyzing several water samples by this method,in which(w)0.01% triethanolamine solution was added as masking agent,values of recovery found were in the range of 92.0%-99.0%." @default.
- W2386173681 created "2016-06-24" @default.
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- W2386173681 date "2008-01-01" @default.
- W2386173681 modified "2023-09-23" @default.
- W2386173681 title "FAAS Determination of Trace Amounts of Cadmium in Water Samples——On-line Preconcentration of Cadmium with FI-Knotted Reactor" @default.
- W2386173681 hasPublicationYear "2008" @default.
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