Abstract
The effect of sodium hydrogen phosphate/citric acid mixtures on enhancing phytoremediation of heavy metal-contaminated soil by alfalfa (Medicago sativa L.) and the changes of metal availability in soils were investigated.Alfalfa plants grew healthily in heavy metals-contaminated soils (collected from molybdenum mine) for 30 days.The heavy metal content was determined by ICP-OES.In this paper, it was found that: the phytoextraction efficiency of alfalfa plants was enhanced after the sodium hydrogen phosphate/citric acid mixtures were added into soil.As usual, the phosphorus can promote plants to accumulate more biomass (increasing 0.35%-24.62%)even if the availability of metals to extraction were increased by citric acid in the soil.With the treatment of sodium hydrogen phosphate/citric acid mixtures, the bioconcentration factor (BCF) values of alfalfa plants and the acid soluble fractions of heavy metals in soils were increased.The translocation factor (TF) values of all alfalfas in heavy metals were low, but the TF of As, Cr, Hg, Mo tended to increase with sodium hydrogen phosphate/citric acid mixtures.In other words, both the availability and the biologicalvalidity of heavy metals in soils were increased after sodium hydrogen phosphate/citric acid mixtures were added into soils.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Alfalfa grew healthily for 30 days in contaminated soil.
- Taxon
- Alfalfa
Medicago sativae0 - Outcome
- grew healthilye0
- Value
- 30 dayse0
- Setting
- molybdenum minee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alfalfa plants grew healthily in heavy metals-contaminated soils (collected from molybdenum mine) for 30 days.”
Claim · model-written summary
The mixtures increased alfalfa phytoextraction efficiency.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- sodium hydrogen phosphate/citric acid mixturese0
- Outcome
- phytoextraction efficiency of alfalfa plantse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the phytoextraction efficiency of alfalfa plants was enhanced after the sodium hydrogen phosphate/citric acid mixtures were added into soil”
Claim · model-written summary
Phosphorus increased plant biomass by 0.35%-24.62%.
- Taxon
- alfalfaMedicago sativat0
- Treatment
- phosphoruse0
- Outcome
- biomasse0
- Direction
- increasinge0
- Value
- 0.35%-24.62%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the phosphorus can promote plants to accumulate more biomass (increasing 0.35%-24.62%)”
t0“ALFALFA”
Claim · model-written summary
The mixtures increased alfalfa bioconcentration factors.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- sodium hydrogen phosphate/citric acid mixturese0
- Outcome
- bioconcentration factor (BCF) values of alfalfa plantse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the treatment of sodium hydrogen phosphate/citric acid mixtures, the bioconcentration factor (BCF) values of alfalfa plants and the acid soluble fractions of heavy metals in soils were increased.”
Claim · model-written summary
The mixtures increased acid soluble metal fractions in soil.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- sodium hydrogen phosphate/citric acid mixturese0
- Outcome
- acid soluble fractions of heavy metals in soilse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the treatment of sodium hydrogen phosphate/citric acid mixtures, the bioconcentration factor (BCF) values of alfalfa plants and the acid soluble fractions of heavy metals in soils were increased.”
Claim · model-written summary
Alfalfa translocation factors for heavy metals were low.
- Taxon
- alfalfasMedicago sativae0
- Outcome
- translocation factor (TF) values of all alfalfas in heavy metalse0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The translocation factor (TF) values of all alfalfas in heavy metals were low”
Claim · model-written summary
The mixtures tended to increase translocation factors for As, Cr, Hg, and Mo.
- Taxon
- alfalfaMedicago sativat0
- Treatment
- sodium hydrogen phosphate/citric acid mixturese0
- Outcome
- TF of As, Cr, Hg, Moe0
- Direction
- tended to increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the TF of As, Cr, Hg, Mo tended to increase with sodium hydrogen phosphate/citric acid mixtures”
t0“ALFALFA”
Claim · model-written summary
The mixtures increased soil metal availability.
- Taxon
- alfalfaMedicago sativat0
- Treatment
- sodium hydrogen phosphate/citric acid mixturese0
- Outcome
- availabilitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both the availability and the biologicalvalidity of heavy metals in soils were increased after sodium hydrogen phosphate/citric acid mixtures were added into soils”
t0“ALFALFA”
Claim · model-written summary
The mixtures increased soil metal biological validity.
- Taxon
- alfalfaMedicago sativat0
- Treatment
- sodium hydrogen phosphate/citric acid mixturese0
- Outcome
- biologicalvalidity of heavy metals in soilse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both the availability and the biologicalvalidity of heavy metals in soils were increased after sodium hydrogen phosphate/citric acid mixtures were added into soils”
t0“ALFALFA”
The same questions in other papers
sodium atom · nutrient: content · Medicago sativa (alfalfa)Positive and negative results
2 in the opposite direction
- negative
- no effect
hydrogenphosphate · nutrient: content · Medicago sativa (alfalfa)Results agree
1 paper in the same direction as this paper
- positive
citric acid · nutrient: content · Medicago sativa (alfalfa)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
phosphorus · growth · Medicago sativa (alfalfa)Results differ
35 papers in the same direction as this paper · 5 in the opposite direction · 2 reporting no difference from an alternative
- negative
- negative
- no effect
39 papers more in this group
See all 43 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.