Ml. Mena et Cw. Mcleod, MERCURY SPECIES IMMOBILIZED ON SULFHYDRYL COTTON - A NEW CANDIDATE REFERENCE MATERIAL FOR MERCURY SPECIATION, Mikrochimica acta, 123(1-4), 1996, pp. 103-108
A batch of sulphydryl cotton microcolumns was prepared and charged wit
h a mixed Hg standard solution (methyl-, ethyl- and inorganic HE, 10 m
u g l(-1) as Hg, 3 mi) and stored at 4 degrees C in a light-tight box.
At regular time intervals over a 4 month period microcolumns were rem
oved and Hg species were quantified by gas chromatography microwave-in
duced plasma atomic emission spectrometry (after elution, extraction a
nd derivatization steps). It was found that analyte recoveries for met
hyl- and inorganic HE were quantitative over the 4 month period while
ethyl-Hg species appeared to be stable for up to 2 months.