heavy metals;
sequential extraction;
fractionation;
speciation;
sediment;
D O I:
10.1080/03067319608039810
中图分类号:
O65 [分析化学];
学科分类号:
070302 ;
081704 ;
摘要:
We compared the sequential extraction according to Tessier et al. with the results, obtained from single extractions employing reagents and reacting conditions similar-to these of the different Tessier steps. The aim was to investigate whether an approach involving fewer consecutive steps provides similar information as sequential extraction. The estimates of the exchangeable, acid extractable and reducible fractions from the single extraction data were in good agreement with the fractions obtained using sequential extraction. The oxidizable fraction should be determined by extraction of the residue of a hydroxylamine-hydrochloride extraction.
机构:
Univ Nacl Sur, FIA Lab, Dept Chem, INQUISUR UNS CONICET, RA-8000 Bahia Blanca, Buenos Aires, ArgentinaUniv Nacl Sur, FIA Lab, Dept Chem, INQUISUR UNS CONICET, RA-8000 Bahia Blanca, Buenos Aires, Argentina
Alvarez, Monica B.
Domini, Claudia E.
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机构:
Univ Nacl Sur, FIA Lab, Dept Chem, INQUISUR UNS CONICET, RA-8000 Bahia Blanca, Buenos Aires, ArgentinaUniv Nacl Sur, FIA Lab, Dept Chem, INQUISUR UNS CONICET, RA-8000 Bahia Blanca, Buenos Aires, Argentina
Domini, Claudia E.
Garrido, Mariano
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机构:
Univ Nacl Sur, FIA Lab, Dept Chem, INQUISUR UNS CONICET, RA-8000 Bahia Blanca, Buenos Aires, ArgentinaUniv Nacl Sur, FIA Lab, Dept Chem, INQUISUR UNS CONICET, RA-8000 Bahia Blanca, Buenos Aires, Argentina
Garrido, Mariano
Lista, Adriana G.
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机构:
Univ Nacl Sur, FIA Lab, Dept Chem, INQUISUR UNS CONICET, RA-8000 Bahia Blanca, Buenos Aires, ArgentinaUniv Nacl Sur, FIA Lab, Dept Chem, INQUISUR UNS CONICET, RA-8000 Bahia Blanca, Buenos Aires, Argentina
Lista, Adriana G.
Fernandez-Band, Beatriz S.
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h-index: 0
机构:
Univ Nacl Sur, FIA Lab, Dept Chem, INQUISUR UNS CONICET, RA-8000 Bahia Blanca, Buenos Aires, ArgentinaUniv Nacl Sur, FIA Lab, Dept Chem, INQUISUR UNS CONICET, RA-8000 Bahia Blanca, Buenos Aires, Argentina