Abstract
Speciation of nickel was investigated in a hyperaccumulator tree, Sebertia acuminata, by liquid chromatography (LC) with parallel ICP MS and electrospray MS-MS detection. The latex of the tree was leached with water. Two separation mechanisms, size-exclusion (SEC) and capillary zone electrophoresis (CZE), were investigated for the separation of Ni-complexes. A preparative scale SEC allowed the isolation of six stable nickel species. A nickel complex with Mr 360 was identified by ES MS. The collision induced fragmentation (CID) of the m/z 360 ion suggested the presence of three carboxylic and one amino groups, and allowed the identification of a Ni-complex with nicotianamine. A modification of the SEC column with Ni2+ ions allowed the isolation of a fraction containing nickel citrate. Quantification of the species showed that in the water extract of the latex 99.4% of the nickel is complexed by citrate and 0.3% by nicotianamine.
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Claims 6
Claim · model-written summary
Six stable nickel species were isolated from the latex
- Taxon
- Sebertia acuminata
Pycnandra acuminatae0 - Outcome
- stable nickel speciese1
- Value
- sixe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Speciation of nickel was investigated in a hyperaccumulator tree, Sebertia acuminata”
e1“A preparative scale SEC allowed the isolation of six stable nickel species”
Claim · model-written summary
A nickel complex with Mr 360 was identified by ES MS
- Taxon
- Sebertia acuminataPycnandra acuminatae0
- Outcome
- nickel complex with Mr 360e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Speciation of nickel was investigated in a hyperaccumulator tree, Sebertia acuminata”
e3“A nickel complex with Mr 360 was identified by ES MS”
Claim · model-written summary
A nickel complex with nicotianamine was identified, with three carboxylic and one amino groups
- Taxon
- Sebertia acuminataPycnandra acuminatae0
- Outcome
- Ni-complex with nicotianaminee4
- Qualifier
- three carboxylic and one amino groupse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Speciation of nickel was investigated in a hyperaccumulator tree, Sebertia acuminata”
e4“The collision induced fragmentation (CID) of the m/z 360 ion suggested the presence of three carboxylic and one amino groups, and allowed the identification of a Ni-complex with nicotianamine”
Claim · model-written summary
A fraction containing nickel citrate was isolated
- Taxon
- Sebertia acuminataPycnandra acuminatae0
- Outcome
- fraction containing nickel citratee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Speciation of nickel was investigated in a hyperaccumulator tree, Sebertia acuminata”
e2“A modification of the SEC column with Ni2+ ions allowed the isolation of a fraction containing nickel citrate”
Claim · model-written summary
In the water extract of the latex, 99.4% of the nickel is complexed by citrate
- Taxon
- Sebertia acuminataPycnandra acuminatae0
- Organ / stage
- water extract of the latexe5
- Compound
- citratee5
- Outcome
- nickel is complexed by citratee5
- Value
- 99.4%e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Speciation of nickel was investigated in a hyperaccumulator tree, Sebertia acuminata”
e5“Quantification of the species showed that in the water extract of the latex 99.4% of the nickel is complexed by citrate and 0.3% by nicotianamine”
Claim · model-written summary
In the water extract of the latex, 0.3% of the nickel is complexed by nicotianamine
- Taxon
- Sebertia acuminataPycnandra acuminatae0
- Organ / stage
- water extract of the latexe5
- Compound
- nicotianaminee5
- Outcome
- nickele5
- Value
- 0.3%e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Speciation of nickel was investigated in a hyperaccumulator tree, Sebertia acuminata”
e5“Quantification of the species showed that in the water extract of the latex 99.4% of the nickel is complexed by citrate and 0.3% by nicotianamine”