Preconcentration of trace multi-elements in water samples using Dowex 50W-x8 and Chelex-100 resins prior to their determination using inductively coupled plasma atomic emission spectrometry (ICP-OES)

2013 ◽  
Vol 66 ◽  
pp. 83-88 ◽  
Author(s):  
Philiswa N. Nomngongo ◽  
J. Catherine Ngila ◽  
Titus A.M. Msagati ◽  
Brenda Moodley
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