Sequential speciation analysis of heavy metals on suspended particulate matter in water using electrochemical mass spectrometry

Abstract

An electrochemical mass spectrometry method was developed for speciation analysis of heavy metals in suspended particulate matter in lake water.

Atomic spectrometry update – a review of advances in environmental analysis

“…The elemental fractionation in suspended particulate matter from an artificial lake was investigated 62 by trapping the particulate matter in a 5 mL sample onto a PTFE filter treated with poly(3,4-ethylenedioxythiophene)–poly(styrene sulfonate) in a small electrolytical cell constructed in-house. The electrochemical cell was then loaded with H 2 O, methanol or 0.05 mM EDTA in sequence to extract the water-soluble, organic and insoluble fractions, respectively, at a voltage of +0.8 V. The liberated ions (Cu, Mn, Ni, Pb and tetramethyl Pb, and Zn) were detected as their EDTA chelates by ESI-MS.…”